JP2023542330A - 7XXX aluminum alloy with high strength and low quenching sensitivity and its manufacturing method - Google Patents

Abstract

A method for manufacturing aluminum alloy products is described. The method includes heating a rolled aluminum alloy product to a first temperature of 400°C to 525°C. The rolled aluminum alloy product may include a 7XXX series aluminum alloy. The method also includes maintaining the rolled aluminum alloy product at the first temperature or within 10° C. of the first temperature for a duration of 15 seconds to 30 minutes. The method also includes quenching the rolled aluminum alloy product at a quenching rate of 0.5° C./sec to 125° C./sec, thereby producing a heat treated aluminum alloy product. Heat treated aluminum alloy products exhibit strain ratios of 0.3 to 0.8. Strain ratio is measured according to ASTM G129 and/or ASTM G139 standard test methods.

Description

(Cross reference to related applications)
This application claims the benefit of and priority from U.S. Provisional Patent Application No. 62/706,906, filed September 17, 2020, which is hereby incorporated by reference in its entirety.

TECHNICAL FIELD This disclosure relates generally to metallurgy and, more particularly, to aluminum alloy products with improved intergranular stress corrosion cracking resistance and methods of making aluminum alloy products.

High strength aluminum alloys are suitable for use in a variety of applications, such as the automotive and aerospace industries. Exemplary high strength aluminum alloys include 7XXX series aluminum alloys. In processing 7XXX series aluminum alloys, the alloy is heat treated and then quenched to fix the solutionized alloying elements and impart appropriate intergranular stress corrosion cracking resistance and desirable mechanical properties. Can be done. If quenching is not carried out within a reasonable amount of time, the resulting product may be susceptible to intergranular stress corrosion cracking and/or have unsuitable mechanical properties.

At the quenching rates required to process 7XXX series aluminum alloys, the operating window remaining between the high temperature treatment step and the quenching step is extremely small. Such small windows require that products formed from 7XXX series aluminum alloys be quenched immediately after the hot working step, which means that products formed from 7XXX series aluminum alloys must be quenched immediately after the hot working step, which means that products formed from 7XXX series aluminum alloys must be quenched immediately after the hot working step, which means that products formed from 7XXX series aluminum alloys must be quenched immediately after the hot working step, which means that the This means there is little or no time for other processing steps, such as transport. Fast quenching rates may also be undesirable because they often require specialized equipment and complicate processing.

Embodiments and similar terms are intended to broadly refer to all of the subject matter of this disclosure and the claims below. Statements containing these terms should not be understood to limit the subject matter described herein or to limit the meaning or scope of the claims that follow. The embodiments contained in this disclosure are defined by the claims, rather than this Summary. This Summary is a high-quality summary of various aspects of the disclosure and introduces some of the concepts that are further described in the Detailed Description section below. This Summary of the Invention is not intended to identify key or essential features of the claimed subject matter, nor is it intended to be used alone in determining the scope of the claimed subject matter. I haven't. The subject matter should be understood by reference to the entire specification of this disclosure, any or all drawings, and appropriate portions of each claim.

Described herein are rolled aluminum alloy products and methods for producing aluminum alloy products that have quench insensitivity and improved strength values. In another aspect, a method of manufacturing an aluminum alloy product is described. The method can include heating the rolled aluminum alloy product. The rolled aluminum alloy product contains 4.00 wt% to 15.00 wt% Zn, 0.10 wt% to 3.50 wt% Cu, 1.00 wt% to 4.00 wt% Mg, 0. 05 wt% to 0.50 wt% Fe, 0.05 wt% to 0.30 wt% Si, 0.05 wt% to 0.25 wt% Zr, 0.25 wt% or less Mn, 0 7XXX series aluminum alloy products having up to .20 wt% Cr, up to 0.15 wt% Ti, and Al can be included. In some embodiments, the rolled aluminum alloy product comprises 4.00% to 15.00% Zn, 0.20% to 2.60% Cu, 1.40% to 2.80% by weight wt% Mg, 0.10 wt% to 0.35 wt% Fe, 0.05 wt% to 0.20 wt% Si, 0.05 wt% to 0.15 wt% Zr, 0.01 It can have by weight % to 0.05 weight % Mn, 0.01 weight % to 0.05 weight % Cr, 0.001 weight % to 0.05 weight % Ti, and Al. Meanwhile, in other embodiments, the rolled aluminum alloy product includes 4.00 wt.% to 15.00 wt.% Zn, 0.30 wt.% to 2.50 wt.% Cu, 1.60 wt.% to 2.60 wt.% % Mg, 0.10 wt.% to 0.25 wt.% Fe, 0.07 wt.% to 0.15 wt.% Si, 0.09 wt.% to 0.15 wt.% Zr, 0.02 wt. % to 0.05 wt.% Mn, 0.03 wt.% to 0.05 wt.% Cr, 0.003 wt.% to 0.035 wt.% Ti, and Al. Meanwhile, in yet other embodiments, the rolled aluminum alloy product comprises 4.00 wt.% to 15.00 wt.% Zn, 0.20 wt.% to 2.10 wt.% Cu, 2.20 wt.% to 2.0 wt.% .40 wt% Mg, 0.18 wt% to 0.23 wt% Fe, 0.09 wt% to 0.12 wt% Si, 0.05 wt% to 0.15 wt% Zr, 0 .04 wt% to 0.09 wt% Mn, 0.03 wt% to 0.09 wt% Cr, 0.01 wt% to 0.02 wt% Ti, 0.15 wt% or less impurities, and Al. Optionally, the rolled aluminum alloy product further comprises 0.20% by weight or less of one or more of Mo, Nb, Be, B, Co, Sn, Sr, V, In, Hf, Ag, Sc, and Ni. be able to.

The methods described herein can include heating a rolled aluminum alloy product to a first temperature of 400°C to 525°C. For example, the first temperature can be between 450°C and 510°C. In some embodiments, the first temperature can be a solution temperature. After heating the rolled aluminum alloy product to the first temperature, the rolled aluminum alloy product can be maintained at the first temperature or within 10° C. of the first temperature for a period of 15 seconds to 30 minutes. The method may also include quenching the rolled aluminum alloy product at a quench rate of 0.5° C./sec to 125° C./sec to produce a heat treated aluminum alloy product. In some embodiments, the quenching rate can be from 5°C/sec to 125°C/sec, and in other embodiments, the quenching rate can be from 10°C/sec to 125°C/sec. Optionally, the quenching rate is 5°C/s to 10°C/s, 10°C/s to 15°C/s, 15°C/s to 20°C/s, 20°C/s to 25°C/s, 25°C/s seconds to 30℃/second, 30℃/second to 35℃/second, 35℃/second to 40℃/second, 40℃/second to 45℃/second, 45℃/second to 50℃/second, 50℃/second seconds to 55℃/second, 55℃/second to 60℃/second, 60℃/second to 65℃/second, 65℃/second to 70℃/second, 70℃/second to 75℃/second, 75℃/second seconds to 80℃/second, 80℃/second to 85℃/second, 85℃/second to 90℃/second, 90℃/second to 95℃/second, 95℃/second to 100℃/second, 100℃/second sec to 105°C/sec, 105°C/sec to 110°C/sec, 110°C/sec to 115°C/sec, 115°C/sec to 120°C/sec, or 120°C/sec to 125°C/sec. Can be done.

In some embodiments, hardening the rolled aluminum alloy product includes a first hardening at a first hardening rate to an intermediate temperature and a second hardening to a second temperature at a second hardening rate. and quenching. The second quenching rate may be greater than the first quenching rate. The rolled aluminum alloy product can be quenched until the rolled aluminum alloy product reaches a second temperature of 10°C to 100°C. Optionally, the second temperature can be ambient temperature. In some embodiments, hardening the rolled aluminum alloy product can include a mold hardening process, a water hardening process, and a forced air hardening process. By way of example, the first quenching rate may correspond to or occur when the aluminum alloy product is removed from the heating system, but before the product is introduced into the quenching system (e.g., mold quenching). The initial decrease in temperature upon exposure to ambient conditions may be at or correspond to a first quenching rate. Optionally, the second hardening may then correspond to a hardening performed during an active hardening process, such as a mold hardening process.

Heating and quenching rolled aluminum alloy products may correspond to a solution heat treatment process. Optionally, the method may further include subjecting the rolled aluminum alloy product to a hot forming process after heating the rolled aluminum alloy product. In some cases, the method may also include subjecting the heat treated aluminum alloy product to an aging treatment, such as a T6 heat or a T7 heat. For example, the heat treated aluminum alloy product can optionally be further heated to a temperature of 100° C. to 170° C. and maintained at that temperature for 12 hours to 30 hours. Other quenching and tempering processes, methods and conditions may also be used, such as those described in US Patent Application Publication No. US2018/0202031, which is incorporated herein by reference.

Heat treated aluminum alloy products may exhibit desirable and/or improved mechanical properties. For example, a heat treated aluminum alloy product produced by hardening a rolled aluminum alloy product can exhibit a strain ratio of 0.30 to 0.80. For example, a heat treated aluminum alloy product can exhibit a strain ratio of 0.375 to 0.425 when the quench rate is about 125° C./second or less. In some embodiments, the quenching rate may exceed 125°C. Strain ratios are determined according to ASTM G129-00 (2013), Standard Practice for Slow Strain Rate Testing to Evaluate the Susceptibility of Meta, which is incorporated herein by reference. llic Materials to Environmentally Assisted Cracking, ASTM International, West Conshohocken, PA, 2013 or ASTM G139-05 (2015), Standard Test Method for Determining Stress-Corrosion Cracking Resistance, which is incorporated herein by reference. of Heat-Treatable Aluminum Alloy Products Using Breaking Load Method , ASTM International, West Conshohocken, PA, 2015. In some embodiments, the heat treated aluminum alloy product may exhibit an ultimate tensile strength of 500 MPa to 650 MPa. For example, a heat treated aluminum alloy product can exhibit an ultimate tensile strength of 605 MPa to 615 MPa when the quenching rate is about 125° C./sec or less. In some embodiments, the heat treated aluminum alloy product may exhibit a yield strength of 400 MPa to 600 MPa. For example, a heat treated aluminum alloy product can exhibit a yield strength of 560 MPa to 580 MPa when the quenching rate is about 125° C./second or less. In some embodiments, heat treated aluminum alloy products may exhibit uniform elongation from 7.50% to 10.50%. For example, a heat treated aluminum alloy product can exhibit a uniform elongation of 9.00% to 9.60% when the quench rate is about 125° C./second or less. In some embodiments, the heat treated aluminum alloy product may exhibit a total elongation of 10.00% to 15.00%. For example, a heat treated aluminum alloy product can exhibit a total elongation of 13.80% to 14.20% when the quench rate is about 125° C./second or less. In some embodiments, the heat treated aluminum alloy product may exhibit a precipitate-free zone width of 10 nm to 110 nm. For example, heat-treated aluminum alloy products can exhibit precipitate-free zone widths of 10 nm to 13 nm when the quenching rate is about 125° C./second or less.

Heat treated aluminum alloy products may also exhibit superior corrosion resistance. Heat-treated aluminum alloy products produced by quenching can exhibit corrosion depths of 5 μm to 300 μm when measured according to the ASTM G110 standard test method. For example, heat-treated aluminum alloy products may exhibit corrosion depths of 5 μm to 150 μm, or 25 μm to 50 μm when the quench rate is about 125° C./sec. In some cases, the corrosion depth may include at least one of pitting corrosion and intergranular corrosion. In some embodiments, when the quench rate is about 50° C./sec, the corrosion may include intergranular corrosion. In some cases, the corrosion may not include intergranular corrosion if the quenching rate is greater than or equal to about 5° C./second.

In some cases, the mechanical properties and corrosion resistance of heat-treated aluminum alloy products may exceed those described above if faster quenching is performed; It will be appreciated that the handling and processing flexibility of hot aluminum alloy products immediately after heat treatment can be improved without reducing the mechanical properties or corrosion resistance of the heat treated aluminum alloy products. Thus, by using the aluminum alloy products described herein, the quenching process becomes less complex and more forgiving, and heat treating, quenching, stamping, or other processes can be simplified. .

In other aspects, products may be described herein, such as heat treated aluminum alloy products. The heat-treated aluminum alloy product contains 4.00% to 15.00% by weight of Zn, 0.10% to 3.50% by weight Cu, 1.00% to 4.00% by weight Mg, 0. 05 wt% to 0.50 wt% Fe, 0.05 wt% to 0.30 wt% Si, 0.05 wt% to 0.25 wt% Zr, 0.25 wt% or less Mn, 0 7XXX series aluminum alloy products having up to .20 wt% Cr, up to 0.15 wt% Ti, and Al can be included. In some embodiments, the heat treated aluminum alloy product can be a formed aluminum alloy product, a hot formed aluminum alloy product, and/or a T6 temper or a T7 temper.

The product may be a heat treated aluminum alloy product with improved mechanical properties. For example, heat treated aluminum alloy products can exhibit strain ratios of 0.30 to 0.80. For example, a heat treated aluminum alloy product can exhibit a strain ratio of 0.375 to 0.425 when the quench rate is about 125° C./second or less. Strain ratio can be measured according to ASTM G129 and/or ASTM G139 standard test methods. In some embodiments, the heat treated aluminum alloy product is 500 MPa to 650 MPa, such as 500 MPa to 510 MPa, 510 MPa to 520 MPa, 520 MPa to 530 MPa, 530 MPa to 540 MPa, 540 MPa to 550 MPa, 550 MPa to 560 MPa, 560 MPa to 57 0MPa, 570MPa to 580MPa, It may exhibit an ultimate tensile strength of 580 MPa to 590 MPa, 590 MPa to 600 MPa, 600 MPa to 610 MPa, 610 MPa to 620 MPa, 620 MPa to 630 MPa, 630 MPa to 640 MPa, or 640 MPa to 650 MPa. For example, heat treated aluminum alloy products can exhibit ultimate tensile strengths of 605 MPa to 615 MPa when the quenching rate is about 125° C./second or less. In some embodiments, the heat treated aluminum alloy product has a temperature of 400 MPa to 600 MPa, such as 400 MPa to 410 MPa, 410 MPa to 420 MPa, 420 MPa to 430 MPa, 430 MPa to 440 MPa, 440 MPa to 450 MPa, 450 MPa to 460 MPa, 460 MPa to 4 70MPa, 470MPa~480MPa , 480MPa to 490MPa, 490MPa to 500MPa, 500MPa to 510MPa, 510MPa to 520MPa, 520MPa to 530MPa, 530MPa to 540MPa, 540MPa to 550MPa, 550MPa to 560MPa, 560MPa to 5 70MPa, 570MPa to 580MPa, 580MPa to 590MPa, or 590MPa to 600MPa It can exhibit yield strength. For example, a heat treated aluminum alloy product can exhibit a yield strength of 560 MPa to 580 MPa when the quenching rate is about 125° C./second or less. In some embodiments, the heat-treated aluminum alloy product comprises 7.50% to 10.50%, such as 7.50% to 8.00%, 8.00% to 8.50%, 8.50% to It may exhibit a uniform elongation of 9.00%, 9.00% to 9.50%, 9.50% to 10.00%, or 10.00% to 10.50%. For example, a heat treated aluminum alloy product can exhibit a uniform elongation of 9.00% to 9.60% when the quench rate is about 125° C./second or less. In some embodiments, the heat-treated aluminum alloy product comprises 10.00% to 15.00%, such as 10.00% to 10.50%, 10.50% to 11.00%, 11.00% to 11 .50%, 11.50% to 12.00%, 12.00% to 12.50%, 12.50% to 13.00%, 13.00% to 13.50%, 13.50% to 14 .00%, 14.00% to 14.50%, or 14.50% to 15.00%. For example, a heat treated aluminum alloy product can exhibit a total elongation of 13.80% to 14.20% when the quench rate is about 125° C./second or less. In some embodiments, the heat treated aluminum alloy article has a thickness of 10 nm to 110 nm, such as 10 nm to 11 nm, 11 nm to 12 nm, 12 nm to 13 nm, 13 nm to 14 nm, 14 nm to 15 nm, 15 nm to 20 nm, 20 nm to 25 nm, 25 nm to 30 nm. , 30nm to 35nm, 35nm to 40nm, 40nm to 45nm, 45nm to 50nm, 50nm to 55nm, 55nm to 60nm, 60nm to 65nm, 65nm to 70nm, 70nm to 75nm, 75nm to 80nm, 80nm to 85nm, 85nm to 90nm, 90nm It may exhibit a precipitate-free zone width of ˜95 nm, 95 nm to 100 nm, 100 nm to 105 nm, or 105 nm to 110 nm. For example, heat-treated aluminum alloy products can exhibit precipitate-free zone widths of 10 nm to 13 nm when the quenching rate is about 125° C./second or less.

The product may include a heat treated aluminum alloy product with excellent corrosion resistance. For example, a heat-treated aluminum alloy product may have a diameter of 5 μm to 300 μm, such as 5 μm to 10 μm, 10 μm to 15 μm, 15 μm to 20 μm, 20 μm to 25 μm, 25 μm to 30 μm, 30 μm to 35 μm, 35 μm, as measured according to ASTM G110 standard test method. ～40μm, 40μm～45μm, 45μm～50μm, 50μm～60μm, 60μm～70μm, 70μm～80μm, 80μm～90μm, 90μm～100μm, 100μm～110μm, 110μm～120μm, 120μm～130μm, 130μm～140 μm, 140 μm to 150 μm , 150 μm to 160 μm, 160 μm to 170 μm, 170 μm to 180 μm, 180 μm to 190 μm, 190 μm to 200 μm, 200 μm to 210 μm, 210 μm to 220 μm, 220 μm to 230 μm, 230 μm to 240 μm, 240 μm to 250 μm, 250μm~260μm, 260μm~270μm, 270μm Corrosion depths of ˜280 μm, 280 μm to 290 μm, or 290 μm to 300 μm may be exhibited. In some embodiments, heat treated aluminum alloy products may exhibit corrosion depths of 5 μm to 150 μm, or 25 μm to 50 μm when the quench rate is about 125° C./sec or less.

In some embodiments, a heat treated aluminum alloy product can be produced by heating a rolled aluminum alloy product to a first temperature. The rolled aluminum alloy product may include a 7XXX series aluminum alloy. Rolled aluminum alloy products can be heated to temperatures of 400°C to 525°C. Rolled aluminum alloy products can be heated for 15 seconds to 30 minutes, such as 15 seconds to 30 seconds, 30 seconds to 1 minute, 1 minute to 5 minutes, 5 minutes to 10 minutes, 10 minutes to 15 minutes, 15 minutes to 20 minutes, 20 minutes The first temperature, or within 10° C. of the first temperature, can be maintained for a duration of minutes to 25 minutes, or 25 minutes to 30 minutes. Rolled aluminum alloy products can be heated at temperatures of 0.5°C/s to 125°C/s, such as 0.5°C/s to 1°C/s, 1°C/s to 5°C/s, 5°C/s to 10°C/s. seconds, 10°C/s to 25°C/s, 25°C/s to 50°C/s, 50°C/s to 75°C/s, 75°C/s to 100°C/s, or 100°C/s to 125°C The quenching may be performed at a quenching speed of /sec. Optionally, the product may be produced by any of the methods described herein.

Automotive and aerospace products are also described herein. In some embodiments, automotive products can incorporate products described herein. For example, automotive products may incorporate heat treated aluminum alloy products such as those described above. In other embodiments, aerospace products can incorporate products described herein. For example, aerospace products may incorporate heat treated aluminum alloy products such as those described above. Optionally, automotive products can incorporate products produced by any of the methods described herein. For example, automotive products can incorporate heat treated aluminum alloy products produced by any of the methods described herein. In some cases, aerospace products can incorporate products produced by any of the methods described herein. For example, aerospace products can incorporate heat treated aluminum alloy products produced by any of the methods described herein.

Other objects and advantages will become apparent from the detailed description of non-limiting examples below.

Reference is made herein to the accompanying drawings, in which the use of like reference numbers in different figures indicates similar or similar elements.

A shows a cross-sectional view of the corrosion profile of a quench-sensitive aluminum alloy product quenched at a rate of 550° C./sec. B shows a cross-sectional view of the corrosion profile of a quench-sensitive aluminum alloy product quenched at a rate of 350° C./sec. C shows a cross-sectional view of the corrosion profile of a quench-sensitive aluminum alloy product quenched at a rate of 250° C./sec. D shows a cross-sectional view of the corrosion profile of a quench-sensitive aluminum alloy product quenched at a rate of 5° C./sec. A shows a cross-sectional view of the corrosion profile of a heat treated aluminum alloy product quenched at a rate of 550° C./sec, according to one embodiment. B shows a cross-sectional view of the corrosion profile of a heat treated aluminum alloy product quenched at a rate of 350° C./sec, according to one embodiment. C shows a cross-sectional view of the corrosion profile of a heat treated aluminum alloy product quenched at a rate of 250° C./sec, according to one embodiment. D shows a cross-sectional view of the corrosion profile of a heat treated aluminum alloy product quenched at a rate of 5° C./sec, according to one embodiment. A shows a cross-sectional view of the corrosion profile of a heat treated aluminum alloy product quenched at a rate of 550° C./sec, according to another embodiment. B shows a cross-sectional view of the corrosion profile of a heat treated aluminum alloy product quenched at a rate of 350° C./sec, according to another embodiment. C shows a cross-sectional view of the corrosion profile of a heat treated aluminum alloy product quenched at a rate of 250° C./sec, according to another embodiment. D shows a cross-sectional view of the corrosion profile of a heat treated aluminum alloy product quenched at a rate of 5° C./sec, according to another embodiment. FIG. 5 shows an exemplary graph showing a comparison of corrosion depth at different quench rates for a quench-sensitive aluminum alloy product and a heat-treated aluminum alloy product manufactured in accordance with some embodiments. FIG. 3 shows an exemplary graph showing a comparison of yield strength at different quench rates for a quench-sensitive aluminum alloy product and a heat-treated aluminum alloy product manufactured in accordance with some embodiments. FIG. 5 shows an exemplary graph showing a comparison of ultimate tensile strength at different quench rates for a quench-sensitive aluminum alloy product and a heat-treated aluminum alloy product manufactured in accordance with some embodiments. FIG. 3 shows an exemplary graph showing a comparison of total elongation at different quench rates for a quench-sensitive aluminum alloy product and a heat-treated aluminum alloy product manufactured in accordance with some embodiments. FIG. 5 shows an exemplary graph showing a comparison of strain ratios at different quench rates for a quench-sensitive aluminum alloy product and a heat-treated aluminum alloy product manufactured in accordance with some embodiments. FIG. 5 shows an exemplary graph showing a comparison of precipitate-free zone widths at different quench rates for a quench-sensitive aluminum alloy product and a heat-treated aluminum alloy product manufactured in accordance with some embodiments. A shows an electron micrograph image showing a precipitate-free zone formed when a quench-sensitive aluminum alloy product is quenched at a rate of 550° C./sec. B shows an electron micrograph image showing a precipitate-free zone formed when a quench-sensitive aluminum alloy product was quenched at a rate of 150° C./sec. C shows an electron micrograph image showing a precipitate-free zone formed when a quench-sensitive aluminum alloy product is quenched at a rate of 5° C./sec. A is an electron micrograph showing a precipitate-free zone of a heat-treated aluminum alloy product formed when a rolled aluminum alloy product manufactured according to embodiments disclosed herein is quenched at a rate of 550° C./sec. Show images. B is an electron micrograph showing a precipitate-free zone of a heat-treated aluminum alloy product formed when a rolled aluminum alloy product manufactured according to embodiments disclosed herein is quenched at a rate of 150° C./sec. Show images. C is an electron micrograph showing a precipitate-free zone of a heat-treated aluminum alloy product formed when a rolled aluminum alloy product manufactured according to embodiments disclosed herein is quenched at a rate of 5° C./sec. Show images. 1 depicts an overview of a method of manufacturing an aluminum alloy product, according to some embodiments. FIG. 4 illustrates an example graph illustrating a temperature profile as a function of time for manufacturing an aluminum alloy product, according to some embodiments.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Described herein are aluminum alloy products and methods for making aluminum alloy products that are treated in a manner that provides improved quench susceptibility. Harden susceptibility generally refers to the effect of hardening on the properties of metal products, such as mechanical properties and corrosion resistance. Quenching refers to rapidly cooling a metal product from a first temperature, such as a heat treatment temperature, to a lower temperature, such as room temperature. For example, during processing, the aluminum alloy product may be subjected to a heat treatment in which the aluminum alloy product is heated to a first elevated temperature, such as 450°C to 600°C. Aluminum alloy products may be heat treated as described in US patent application Ser. No. 15/336,982, which is incorporated herein by reference in its entirety. One of the purposes of quenching is to maintain the metastable solid solution formed by the heat treatment. If the product is cooled quickly enough from a first temperature to a second temperature, often near or at room temperature, a solid solution can be obtained in which the solute remains in the alloy solution. Retention of solutes may be desirable because precipitation of solutes from the solution during quenching can result in localized overaging, loss of intergranular corrosion resistance, and, importantly, poor response to age hardening treatments. . Retention of the solute in solid solution makes solute atoms available to form uniform precipitation zones, which are important for strengthening metal products in age hardening processes. Another purpose of quenching may be to maintain the desired number of vacancies to promote low temperature diffusion during the aging stage of precipitation hardening.

Some metal products, such as aluminum alloy products, may be particularly sensitive to solute loss. Solute loss, especially during age hardening processing, can affect the properties of the resulting aluminum alloy product. Solute loss refers to solute chemically combining with other elements and becoming unavailable for precipitation hardening. If the quenching rate is not fast enough, solute atoms tend to diffuse into the grain boundaries and vacancies move into disordered regions. Such migration of solute atoms is often irreversible and can permanently affect the properties of the metal product. For example, some metal products that are not hardened at a sufficient rate may experience high rates of intergranular and stress crack corrosion, and may have reduced yield strength, tensile strength, and grain elongation. Therefore, it is believed that the most desirable mechanical properties achievable are generally associated with high quenching rates.

However, achieving high quenching rates can be costly, complex, or require time-sensitive processes, with additional treatments between the heat treatment and quenching steps. Opportunities are limited to a minimum. Furthermore, high quenching rates can have an undesirable effect on the properties of the metal product. High quenching rates can also potentially lead to the generation of strains and residual stresses within the product's microstructure. Aluminum alloy products may be susceptible to distortion during quenching, for example, due to aluminum's high coefficient of linear expansion. Aluminum's coefficient of linear expansion is twice that of steel, so large temperature fluctuations can cause large strains due to thermal expansion or contraction. Therefore, balancing residual stress with a quenching rate that sufficiently retains the majority of the hardening elements and compounds in solution and minimizes distortion is the key to producing aluminum alloy products with optimal properties. considered desirable.

One approach to balancing the effects of quenching involves a multi-step aging process. These multi-step aging processes often include at least one quenching step. For example, the initial quench from the first temperature can be rapid to maintain solid solution. However, multi-step aging processes can be complex, expensive, and time consuming. Thus, as described herein, methods and metal products are provided for obtaining desirable properties using only a one-step aging process, despite the use of lower quenching rates. Furthermore, the disclosed methods and metal articles can exhibit quench insensitivity, resulting in improved mechanical properties, such as improved strength values, even at low quench rates.

In particular, the disclosed methods and techniques can provide quench-insensitive 7XXX aluminum alloys and products that undergo only one step aging process. The quench-insensitive 7XXX aluminum alloys described herein can have improved intergranular corrosion resistance and stress corrosion cracking resistance without rapid quenching. Exemplary 7XXX aluminum alloys for use in the disclosed methods and techniques are described in U.S. patent application Ser. No. 15/336,982, which is incorporated herein by reference.
Definition and explanation

As used herein, the terms "invention," "the invention," "this invention," and "the present invention" refer to all aspects of this patent application. is intended to refer broadly to the subject matter and claims below. Statements containing these terms should not be understood to limit the subject matter described herein or to limit the meaning or scope of the claims that follow.

Reference is made herein to alloys identified by AA numbers and other associated symbols, such as "series" or "7xxx." For an understanding of the numbering systems most commonly used to name and identify aluminum and its alloys, see International Alloy Designations and Chemical Composition Limits for Wrought Aluminum and Wrought Aluminum Alloys” or “Registration Record of Aluminum Association Alloy Designations and Chemical Compositions” "Limits for Aluminum Alloys in the Form of Castings and Ingot" (both published by The Aluminum Association).

As used herein, plates generally have a thickness greater than about 15 mm. For example, a plate refers to an aluminum article having a thickness greater than about 15 mm, greater than about 20 mm, greater than about 25 mm, greater than about 30 mm, greater than about 35 mm, greater than about 40 mm, greater than about 45 mm, greater than about 50 mm, or greater than about 100 mm. It's okay.

As used herein, a sheet (also referred to as a sheet plate) generally has a thickness of about 4 mm to about 15 mm. For example, the sheet can be about 4 mm, about 5 mm, about 6 mm, about 7 mm, about 8 mm, about 9 mm, about 10 mm, about 11 mm, about 12 mm, about 13 mm, about 14 mm, or about 15 mm thick.

As used herein, sheet generally refers to an aluminum product that is less than about 4 mm thick. For example, the sheet can have a thickness of less than about 4 mm, less than about 3 mm, less than about 2 mm, less than about 1 mm, less than about 0.5 mm, or less than about 0.3 mm (eg, about 0.2 mm).

In this application, reference may be made to tempering or refining the alloy. For an understanding of the description of the most commonly used alloy tempers, see American National Standards (ANSI) H35 on Alloy and Temper Design Systems. F tempering or tempering refers to aluminum alloys as produced. O temper or temper refers to an aluminum alloy after annealing. Hxx temper or temper, also referred to herein as H temper, refers to an aluminum alloy that is not heat treatable after cold rolling, with or without heat treatment (e.g., annealing). Suitable H tempers include HX1, HX2, HX3, HX4, HX5, HX6, HX7, HX8, or HX9 tempers. T1 heat or temper refers to an aluminum alloy that has been cooled from hot working and naturally aged (eg, at room temperature). T2 temper or temper refers to an aluminum alloy that has been cooled from hot working, cold worked, and naturally aged. T3 temper or temper refers to aluminum alloys that have been solution treated, cold worked, and naturally aged. T4 temper or temper refers to an aluminum alloy that has been solution treated and naturally aged. T5 temper or temper refers to aluminum alloys that have been cooled from hot working and artificially aged (at high temperatures). T6 temper or temper refers to an aluminum alloy that has been solution treated and artificially aged. T7 temper or temper refers to an aluminum alloy that has been solution treated and artificially overaged. T8x temper or temper refers to aluminum alloys that have been solution treated, cold worked, and artificially aged. T9 temper or temper refers to an aluminum alloy that has been solution treated, artificially aged, and cold worked. W tempering or tempering refers to an aluminum alloy after solution treatment.

As used herein, "room temperature" means a temperature of about 15°C to about 30°C, such as about 15°C, about 16°C, about 17°C, about 18°C, about 19°C, about 20°C. , about 21°C, about 22°C, about 23°C, about 24°C, about 25°C, about 26°C, about 27°C, about 28°C, about 29°C, or about 30°C. As used herein, "ambient conditions" or "ambient environment" means a temperature of about room temperature, a relative humidity of about 20% to about 100%, and an atmospheric pressure of about 975 mbar to about 1050 mbar. may be included. For example, relative humidity may be about 20%, about 21%, about 22%, about 23%, about 24%, about 25%, about 26%, about 27%, about 28%, about 29%, about 30%, About 31%, about 32%, about 33%, about 34%, about 35%, about 36%, about 37%, about 38%, about 39%, about 40%, about 41%, about 42%, about 43 %, about 44%, about 45%, about 46%, about 47%, about 48%, about 49%, about 50%, about 51%, about 52%, about 53%, about 54%, about 55%, About 56%, about 57%, about 58%, about 59%, about 60%, about 61%, about 62%, about 63%, about 64%, about 65%, about 66%, about 67%, about 68 %, about 69%, about 70%, about 71%, about 72%, about 73%, about 74%, about 75%, about 76%, about 77%, about 78%, about 79%, about 80%, About 81%, about 82%, about 83%, about 84%, about 85%, about 86%, about 87%, about 88%, about 89%, about 90%, about 91%, about 92%, about 93 %, about 94%, about 95%, about 96%, about 97%, about 98%, about 99%, about 100%, or any value therebetween. For example, the atmospheric pressure is about 975 mbar, about 980 mbar, about 985 mbar, about 990 mbar, about 995 mbar, about 1000 mbar, about 1005 mbar, about 1010 mbar, about 1015 mbar, about 1020 mbar, about 1025 mbar, about 1030 mbar, about 1 035mbar, about 1040mbar, about 1045mbar, It can be about 1050 mbar, or any value in between.

Any range disclosed herein is to be understood as encompassing all subranges subsumed within that range. For example, a stated range of "1 to 10" should be considered to include any and all subranges between the minimum value of 1 and the maximum value of 10, including 1 and 10. That is, all subranges start with a minimum value of 1 or more (eg, 1 to 6.1) and end with a maximum value of 10 or less (eg, 5.5 to 10). Unless otherwise specified, when referring to a compositional amount of an element, the expression "up to" means that that element is optional and includes 0% composition of that particular element. Unless otherwise specified, all composition percentages are weight percent (wt%).

As used herein, the meanings of "a," "an," and "the" include singular and plural referents unless the context clearly dictates otherwise.

In this description, aluminum alloy products and their constituent components may be described in weight percent (wt%) with respect to their elemental composition. If the maximum total weight percent of all impurities in each alloy is 0.15%, the balance is aluminum.

Ancillary elements such as grain refiners and deoxidizers, or other additives may be present in the present invention and depart from the properties of the alloys described herein or of the alloys described herein. or they may themselves impart other properties without significant change.
Aluminum alloy products and methods for producing aluminum alloy products

FIGS. 1A, 1B, 1C, and 1D show cross-sectional views of corrosion profiles of harden-sensitive aluminum alloy products hardened at various hardening rates. The quench-sensitive aluminum alloy product may be a product manufactured according to conventional methods and techniques. Corrosion profiles are obtained by subjecting aluminum alloy products to a heat treatment process, followed by quenching at the indicated rate, and then quenching the quenched aluminum alloy products according to the "Standard Test Method for Determining Stress Corrosion Cracking Resistance" (United States Test of Materials). (ASTM) G139) (Standard Test Method for Determining Stress-Corrosion Cracking Resistance) or "Standard Evaluation Method for Intergranular Corrosion Resistance of Heat Treated Aluminum Alloys by Immersion in Sodium Chloride + Hydrogen Peroxide Solution" (ASTM G110) (Standard Practice for Evaluating Intergranular Corrosion Resistance of Heat Treatable Aluminum Alloys by Immersion It can be created by conducting a standard corrosion test for measuring or evaluating corrosion resistance, such as in Sodium Chloride + Hydrogen Peroxide Solution). Corrosion profiles can be obtained by cutting the product being tested and obtaining micrograph images of the cross section.

For example, FIGS. 1A-1D illustrate the corrosion profile of a quench-sensitive aluminum alloy product identified as aluminum alloy product 110. In each embodiment, the aluminum alloy product 110 may be an AA7075 aluminum alloy product. Other exemplary harden sensitive aluminum alloy products 110 may include AA7022, AA7185, AA6056, AA7020, AA7049, AA7249, or AA7149. Although the discussion herein with respect to FIGS. 1A-1D, 2A-2D, and 3A-3D describes aluminum alloy products, the drawings and related discussion are generally applicable to other types of metal products. It is thought that.

In each embodiment, quench susceptibility can be determined based on the quench rate and the type of corrosion that the aluminum alloy product exhibits during corrosion testing. During corrosion testing of hardened products, various types of corrosion may be observed. For example, pitting corrosion may be exhibited, where cavities or holes are formed in an aluminum alloy representing a loss of material. In other cases, intergranular corrosion may be observed. Intergranular corrosion, also known as intercrystalline corrosion or interdendritic corrosion, can be characterized as a form of localized corrosion in which the grain boundaries and the material directly adjacent to the grain boundaries corrode. In some cases, quench susceptibility can also be determined based on the form of corrosion and/or the transition from one form of corrosion to another. For example, quench susceptibility may correspond to a change in corrosion morphology, such as a conversion from pitting to intergranular corrosion when the product is exposed to different quench rates. In some cases, the aluminum alloy product can be quench-insensitive to the extent that the quenching of the aluminum alloy product can be done so slowly that intergranular corrosion does not occur in corrosion tests. Intergranular corrosion may be less desirable than pitting corrosion because cracks can propagate more easily under stress conditions.

As shown in FIG. 1A, when a quench-sensitive aluminum alloy product is quenched at a rapid quenching rate of 550° C./sec, pitting corrosion 120 may occur in a corrosion test. Pitting corrosion 120 can be identified as pockets of localized material loss from the aluminum alloy product 110. In each embodiment, the aluminum alloy product 110 can be quenched using water quenching to achieve a rapid quenching rate of 550° C./sec. Water is widely used for quenching aluminum alloy products. Common methods of water quenching can include cold water immersion, hot water immersion, boiling water, or water spraying. Other frequently used quenching methods include polyalkylene glycol solutions, air blasting, still air (i.e., keeping the aluminum alloy product at room temperature), liquid nitrogen, high-speed oil quenching, or brine solutions. Various quenching methods can be selected depending on the aluminum alloy product, desired properties, and required quenching rate.

FIG. 1B shows that pitting corrosion 120 can also occur when aluminum alloy product 110 is hardened at a rate of 350° C./sec and subjected to a corrosion test. The morphology of the corrosion changes between FIG. 1B and FIG. 1C. As shown in the corrosion profile of FIG. 1C, intergranular corrosion 130 can also occur when aluminum alloy product 110 is quenched at a rate of 250° C./sec and subjected to corrosion testing. Pitting corrosion 130 can be identified as the formation of localized fractures along grain boundaries of aluminum alloy product 110. In the corrosion profiles as shown in FIGS. 1A-1D, intergranular corrosion 130 is a slightly more delicate fracture within the bulk of aluminum alloy article 110 compared to the large fractures or pockets of material loss exhibited by pitting corrosion 120. It can be specified as Intergranular corrosion 130 may also occur when the aluminum alloy product 110 is quenched at a rate of 5° C./sec and subjected to a corrosion test. The change in corrosion morphology from pitting corrosion 120 to intergranular corrosion 130 between quenching rates of 350°C/sec to 250°C/sec indicates that the aluminum alloy product 110 is quench-susceptible or achieves resistance to intergranular corrosion. This is thought to indicate that a high quenching rate is required to achieve this. Further, such quench sensitivity of the aluminum alloy article 110 is believed to indicate that the aluminum alloy article 110 has less desirable properties, such as less stress corrosion cracking resistance or lower strength values.

2A-2D illustrate corrosion profiles of heat treated aluminum alloy products according to the methods and techniques disclosed herein. The heat treated aluminum alloy products provided herein can be quench-insensitive aluminum alloy products. In FIGS. 2A-2D, the heat treated aluminum alloy product is identified as aluminum alloy product 210. In FIGS. The aluminum alloy article 210 may be or include a 7XXX series aluminum alloy, as described herein. These alloys can exhibit improved quench insensitivity and unexpectedly high strength values after quenching, such as high tensile and yield strengths that can be maintained when subjected to corrosion tests. The properties of the aluminum alloy products disclosed herein can be achieved through the composition of the products and the methods by which they are manufactured and processed. Advantageously, the final properties of these aluminum alloy products can be achieved during a single aging process. Additionally, aluminum alloy products can be relatively insensitive to quenching, meaning that quenching can be carried out at slower quenching rates without resulting in undesirable changes in properties, and between heat treatment and quenching processes. further processing time, reduction in quenching costs, and/or reduction in distortion. The aluminum alloys described herein may optionally have elemental compositions as shown in Table 1.

In some examples, the aluminum alloys described herein may have an elemental composition as shown in Table 2.

In some examples, the aluminum alloys described herein may have elemental compositions as shown in Table 3.

In some examples, the aluminum alloys described herein may have elemental compositions as shown in Table 4.

In some examples, the alloys described herein contain 4.00% to 15.00% (e.g., 5.40% to 9.50%, 5.60% to 9%, based on the total weight of the alloy). .30%, 5.80% to 9.20%, or 4.00% to 5.00%). For example, the alloy may be 4.00%, 4.10%, 4.20%, 4.30%, 4.40%, 4.50%, 4.60%, 4.70%, 4.80%, 4.90%, 5.00%, 5.10%, 5.20%, 5.30%, 5.40%, 5.50%, 5.60%, 5.70%, 5.80%, 5.90%, 6.00%, 6.10%, 6.20%, 6.30%, 6.40%, 6.50%, 6.60%, 6.70%, 6.80%, 6.90%, 7.00%, 7.10%, 7.20%, 7.30%, 7.40%, 7.50%, 7.60%, 7.70%, 7.80%, 7.90%, 8.00%, 8.10%, 8.20%, 8.30%, 8.40%, 8.50%, 8.60%, 8.70%, 8.80%, 8.90%, 9.00%, 9.10%, 9.20%, 9.30%, 9.40%, 9.50%, 9.60%, 9.70%, 9.80%, 9.90%, 10.00%, 10.10%, 10.20%, 10.30%, 10.40%, 10.50%, 10.60%, 10.70%, 10.80%, 10.90%, 11.00%, 11.10%, 11.20%, 11.30%, 11.40%, 11.50%, 11.60%, 11.70%, 11.80%, 11.90%, 12.00%, 12.10%, 12.20%, 12.30%, 12.40%, 12.50%, 12.60%, 12.70%, 12.80%, 12.90%, 13.00%, 13.10%, 13.20%, 13.30%, 13.40%, 13.50%, 13.60%, 13.70%, 13.80%, 13.90%, 14.00%, 14.10%, 14.20%, 14.30%, 14.40%, 14.50%, 14.60%, 14.70%, 14.80%, It can contain 14.90% or 15.00% Zn. In some cases, the alloy is 4.00% to 4.10%, 4.10% to 4.20%, 4.20% to 4.30%, 4.30% to 4.40%, 4.40% ～4.50%, 4.50%～4.60%, 4.60%～4.70%, 4.70%～4.80%, 4.80%～4.90%, 4.90% ～5.00%, 5.00%～5.10%, 5.10%～5.20%, 5.20%～5.30%, 5.30%～5.40%, 5.40% ～5.50%, 5.50%～5.60%, 5.60%～5.70%, 5.70%～5.80%, 5.80%～5.90%, 5.90% ～6.00%, 6.00%～6.10%, 6.10%～6.20%, 6.20%～6.30%, 6.30%～6.40%, 6.40% ～6.50%, 6.50%～6.60%, 6.60%～6.70%, 6.70%～6.80%, 6.80%～6.90%, 6.90% ～7.00%, 7.00%～7.10%, 7.10%～7.20%, 7.20%～7.30%, 7.30%～7.40%, 7.40% ～7.50%, 7.50%～7.60%, 7.60%～7.70%, 7.70%～7.80%, 7.80%～7.90%, 7.90% ～8.00%, 8.00%～8.10%, 8.10%～8.20%, 8.20%～8.30%, 8.30%～8.40%, 8.40% ～8.50%, 8.50%～8.60%, 8.60%～8.70%, 8.70%～8.80%, 8.80%～8.90%, 8.90% ～9.00%, 9.00%～9.10%, 9.10%～9.20%, 9.20%～9.30%, 9.30%～9.40%, 9.40% ～9.50%, 9.50%～9.60%, 9.60%～9.70%, 9.70%～9.80%, 9.80%～9.90%, 9.90% ～10.00%, 10.00%～10.10%, 10.10%～10.20%, 10.20%～10.30%, 10.30%～10.40%, 10.40% ～10.50%, 10.50%～10.60%, 10.60%～10.70%, 10.70%～10.80%, 10.80%～10.90%, 10.90% ～11.00%, 11.00%～11.10%, 11.10%～11.20%, 11.20%～11.30%, 11.30%～11.40%, 11.40% ～11.50%, 11.50%～11.60%, 11.60%～11.70%, 11.70%～11.80%, 11.80%～11.90%, 11.90% ～12.00%, 12.00%～12.10%, 12.10%～12.20%, 12.20%～12.30%, 12.30%～12.40%, 12.40% ～12.50%, 12.50%～12.60%, 12.60%～12.70%, 12.70%～12.80%, 12.80%～12.90%, 12.90% ～13.00%, 13.00%～13.10%, 13.10%～13.20%, 13.20%～13.30%, 13.30%～13.40%, 13.40% ～13.50%, 13.50%～13.60%, 13.60%～13.70%, 13.70%～13.80%, 13.80%～13.90%, 13.90% ～14.00%, 14.00%～14.10%, 14.10%～14.20%, 14.20%～14.30%, 14.30%～14.40%, 14.40% ~14.50%, 14.50% to 14.60%, 14.60% to 14.70%, 14.70% to 14.80%, 14.80% to 14.90%, or 14.90 % to 15.00% Zn. All percentages are by weight.

In some examples, the described alloys contain 0.10% to 3.5% (e.g., 0.20% to 2.6%, 0.30% to 2.5%) based on the total weight of the alloy. , or 0.15% to 0.60%). For example, the alloy may contain 0.10%, 0.11%, 0.12%, 0.13%, 0.14%, 0.15%, 0.16%, 0.17%, 0.18%, 0.19%, 0.20%, 0.21%, 0.22%, 0.23%, 0.24%, 0.25%, 0.26%, 0.27%, 0.28%, 0.29%, 0.30%, 0.35%, 0.4%, 0.45%, 0.50%, 0.55%, 0.60%, 0.65%, 0.70%, 0.75%, 0.80%, 0.85%, 0.90%, 0.95%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2.0%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3.0%, 3.1%, 3.2%, 3.3%, 3.4%, Or it can contain 3.5% Cu. Optionally, the alloy is 0.10% to 0.11%, 0.11% to 0.12%, 0.12% to 0.13%, 0.13% to 0.14%, 0.14% ～0.15%, 0.15%～0.16%, 0.16%～0.17%, 0.17%～0.18%, 0.18%～0.19%, 0.19% ～0.20%, 0.20%～0.21%, 0.21%～0.22%, 0.22%～0.23%, 0.23%～0.24%, 0.24% ～0.25%, 0.25%～0.26%, 0.26%～0.27%, 0.27%～0.28%, 0.28%～0.29%, 0.29% ～0.30%, 0.30%～0.35%, 0.35%～0.40%, 0.40%～0.45%, 0.45%～0.50%, 0.50% ～0.55%, 0.55%～0.60%, 0.60%～0.65%, 0.65%～0.70%, 0.70%～0.75%, 0.75% ～0.80%, 0.80%～0.85%, 0.85%～0.90%, 0.90%～0.95%, 0.95%～1.0%, 1.0% ～1.1%, 1.1%～1.2%, 1.2%～1.3%, 1.3%～1.4%, 1.4%～1.5%, 1.5% ～1.6%, 1.6%～1.7%, 1.7%～1.8%, 1.8%～1.9%, 1.9%～2.0%, 2.0% ～2.1%, 2.1%～2.2%, 2.2%～2.3%, 2.3%～2.4%, 2.4%～2.5%, 2.5% ～2.6%, 2.6%～2.7%, 2.7%～2.8%, 2.8%～2.9%, 2.9%～3.0%, 3.0% Contains ~3.1%, 3.1%-3.2%, 3.2%-3.3%, 3.3%-3.4%, or 3.4%-3.5% Cu be able to. All percentages are by weight.

In some examples, the alloys described herein contain 1.00% to 4.00% (eg, 1.00% to 3.00%, 1.40% to 2.80%, or 1.0% to 4.00%). 60% to 2.60%). In some cases, the alloy is 1.00%, 1.10%, 1.20%, 1.30%, 1.40%, 1.50%, 1.60%, 1.70%, 1.80% %, 1.90%, 2.00%, 2.10%, 2.20%, 2.30%, 2.40%, 2.50%, 2.60%, 2.70%, 2.80 %, 2.90%, 3.00%, 3.10%, 3.20%, 3.30%, 3.40%, 3.50%, 3.60%, 3.70%, 3.80 %, 3.90%, or 4.00% Mg. In some cases, the alloy is 1.00% to 1.10%, 1.10% to 1.20%, 1.20% to 1.30%, 1.30% to 1.40%, 1.40% ～1.50%, 1.50%～1.60%, 1.60%～1.70%, 1.80%～1.80%, 1.80%～1.90%, 1.90% ～2.00%, 2.00%～2.10%, 2.10%～2.20%, 2.20%～2.30%, 2.30%～2.40%, 2.40% ～2.50%, 2.50%～2.60%, 2.60%～2.70%, 2.70%～2.80%, 2.80%～2.90%, 2.90% ～3.00%, 3.00%～3.10%, 3.10%～3.20%, 3.20%～3.30%, 3.30%～3.40%, 3.40% ~3.50%, 3.50% to 3.60%, 3.60% to 3.70%, 3.70% to 3.80%, 3.80% to 3.90%, or 3.90 % to 4.00% Mg. All percentages are by weight.

Optionally, the total content of Zn, Cu, and Mg is 5.00% to 14.00% (e.g., 5.50% to 13.50%, 6.00% to 13.00%, 6.50% % to 12.50%, or 7.00% to 12.00%). For example, the total content of Zn, Cu, and Mg is 5.00%, 5.50%, 6.00%, 6.50%, 7.00%, 7.50%, 8.00%, 8 .50%, 9.00%, 9.50%, 10.00%, 10.50%, 11.00%, 11.50%, 12.00%, 12.50%, 13.00%, 13 .50% or 14.00%. In some cases, the total content of Zn, Cu, and Mg is 5.00% to 5.50%, 5.50% to 6.00%, 6.00% to 6.50%, 6.50% to 7.00%, 7.00% to 7.50%, 7.50% to 8.00%, 8.00% to 8.50%, 8.50% to 9.00%, 9.00% to 9.50%, 9.50% to 10.00%, 10.00% to 10.50%, 10.50% to 11.00%, 11.00% to 11.50%, 11.50% to It can be 12.00%, 12.00% to 12.50%, 12.50% to 13.00%, 13.00% to 13.50%, or 13.50% to 14.00%. . All percentages are by weight.

In some examples, the alloys described herein contain 0.05% to 0.50% (e.g., 0.10% to 0.35%, or 0.10%) based on the total weight of the alloy. 0.25%) of iron (Fe). For example, the alloy may contain 0.05%, 0.06%, 0.07%, 0.08%, 0.09%, 0.10%, 0.11%, 0.12%, 0.13%, 0.14%, 0.15%, 0.16%, 0.17%, 0.18%, 0.19%, 0.20%, 0.21%, 0.22%, 0.23%, 0.24%, 0.25%, 0.26%, 0.27%, 0.28%, 0.29%, 0.30%, 0.31%, 0.32%, 0.33%, 0.34%, 0.35%, 0.36%, 0.37%, 0.38%, 0.39%, 0.40%, 0.41%, 0.42%, 0.43%, It can include 0.44%, 0.45%, 0.46%, 0.47%, 0.48%, 0.49%, or 0.50% Fe. Optionally, the alloy is 0.05% to 0.06%, 0.06% to 0.07%, 0.07% to 0.08%, 0.08% to 0.09%, 0.09% ～0.10%, 0.10%～0.11%, 0.11%～0.12%, 0.12%～0.13%, 0.13%～0.14%, 0.14% ～0.15%, 0.15%～0.16%, 0.16%～0.17%, 0.17%～0.18%, 0.18%～0.19%, 0.19% ～0.20%, 0.20%～0.21%, 0.21%～0.22%, 0.22%～0.23%, 0.23%～0.24%, 0.24% ～0.25%, 0.25%～0.26%, 0.26%～0.27%, 0.27%～0.28%, 0.28%～0.29%, 0.29% ～0.30%, 0.30%～0.31%, 0.31%～0.32%, 0.32%～0.33%, 0.33%～0.34%, 0.34% ～0.35%, 0.35%～0.36%, 0.36%～0.37%, 0.37%～0.38%, 0.38%～0.39%, 0.39% ～0.40%, 0.40%～0.41%, 0.41%～0.42%, 0.42%～0.43%, 0.44%～0.44%, 0.44% ~0.45%, 0.45% to 0.46%, 0.46% to 0.47%, 0.47% to 0.48%, 0.48% to 0.49%, or 0.49 % to 0.50% Fe. All percentages are by weight.

In some examples, the alloys described herein contain 0.05% to 0.30% (e.g., 0.05% to 0.25%, or 0.07%) based on the total weight of the alloy. 0.15%). For example, the alloy may contain 0.05%, 0.06%, 0.07%, 0.08%, 0.09%, 0.10%, 0.11%, 0.12%, 0.13%, 0.14%, 0.15%, 0.16%, 0.17%, 0.18%, 0.19%, 0.20%, 0.21%, 0.22%, 0.23%, It can include 0.24%, 0.25%, 0.26%, 0.27%, 0.28%, 0.29%, or 0.30% Si. Optionally, the alloy is 0.05% to 0.06%, 0.06% to 0.07%, 0.07% to 0.08%, 0.08% to 0.09%, 0.09% ～0.10%, 0.10%～0.11%, 0.11%～0.12%, 0.12%～0.13%, 0.13%～0.14%, 0.14% ～0.15%, 0.15%～0.16%, 0.16%～0.17%, 0.17%～0.18%, 0.18%～0.19%, 0.19% ～0.20%, 0.20%～0.21%, 0.21%～0.22%, 0.22%～0.23%, 0.23%～0.24%, 0.24% ~0.25%, 0.25% to 0.26%, 0.26% to 0.27%, 0.27% to 0.28%, 0.28% to 0.29%, or 0.29 % to 0.30% Si. All percentages are by weight.

In some examples, the alloys described herein contain 0.01% to 0.25% (e.g., 0.01% to 0.20%, 0.05% to 0.0%, based on the total weight of the alloy). Zirconium (Zr ) can be included. For example, the alloy may contain 0.01%, 0.02%, 0.03%, 0.04%, 0.05%, 0.06%, 0.07%, 0.08%, 0.09%, 0.10%, 0.11%, 0.12%, 0.13%, 0.14%, 0.15%, 0.16%, 0.17%, 0.18%, 0.19%, It can include 0.20%, 0.21%, 0.22%, 0.23%, 0.24%, or 0.25% Zr. Optionally, the alloy is 0.01% to 0.02%, 0.02% to 0.03%, 0.03% to 0.04%, 0.04% to 0.05%, 0.05% ～0.06%, 0.06%～0.07%, 0.07%～0.08%, 0.08%～0.09%, 0.09%～0.10%, 0.10% ～0.11%, 0.11%～0.12%, 0.12%～0.13%, 0.13%～0.14%, 0.14%～0.15%, 0.15% ～0.16%, 0.16%～0.17%, 0.17%～0.18%, 0.18%～0.19%, 0.19%～0.20%, 0.20% Contains ~0.21%, 0.21%-0.22%, 0.22%-0.23%, 0.23%-0.24%, or 0.24%-0.25% Zr be able to. All percentages are by weight.

In some examples, the alloys described herein contain up to 0.25% (e.g., 0.01% to 0.10%, or 0.02% to 0.05%, based on the total weight of the alloy). %) of manganese (Mn). For example, the alloy may contain 0.01%, 0.02%, 0.03%, 0.04%, 0.05%, 0.06%, 0.07%, 0.08%, 0.09%, 0.10%, 0.11%, 0.12%, 0.13%, 0.14%, 0.15%, 0.16%, 0.17%, 0.18%, 0.19%, It can include 0.20%, 0.21%, 0.22%, 0.23%, 0.24%, or 0.25% Mn. Optionally, the alloy is 0.01% to 0.02%, 0.02% to 0.03%, 0.03% to 0.04%, 0.04% to 0.05%, 0.05% ～0.06%, 0.06%～0.07%, 0.07%～0.08%, 0.08%～0.09%, 0.09%～0.10%, 0.10% ～0.11%, 0.11%～0.12%, 0.12%～0.13%, 0.13%～0.14%, 0.14%～0.15%, 0.15% ～0.16%, 0.16%～0.17%, 0.17%～0.18%, 0.18%～0.19%, 0.19%～0.20%, 0.20% Contains ~0.21%, 0.21%-0.22%, 0.22%-0.23%, 0.23%-0.24%, or 0.24%-0.25% Mn be able to. In some cases, manganese may not be present in the alloy (ie, 0.0%). All percentages are by weight.

In some examples, the alloys described herein contain up to 0.20% (e.g., 0.01% to 0.10%, 0.01% to 0.05%) based on the total weight of the alloy. , or 0.03% to 0.05%). For example, the alloy may contain 0.01%, 0.02%, 0.03%, 0.04%, 0.05%, 0.06%, 0.07%, 0.08%, 0.09%, 0.10%, 0.11%, 0.12%, 0.13%, 0.14%, 0.15%, 0.16%, 0.17%, 0.18%, 0.19%, Or it can contain 0.20% Cr. Optionally, the alloy is 0.01% to 0.02%, 0.02% to 0.03%, 0.03% to 0.04%, 0.04% to 0.05%, 0.05% ～0.06%, 0.06%～0.07%, 0.07%～0.08%, 0.08%～0.09%, 0.09%～0.10%, 0.10% ～0.11%, 0.11%～0.12%, 0.12%～0.13%, 0.13%～0.14%, 0.14%～0.15%, 0.15% Contains ~0.16%, 0.16%-0.17%, 0.17%-0.18%, 0.18%-0.19%, or 0.19%-0.20% Cr be able to. In some cases, Cr may not be present in the alloy (ie, 0.0%). All percentages are by weight.

In some examples, the alloys described herein contain up to 0.15% (e.g., 0.001% to 0.10%, 0.001% to 0.05%, based on the total weight of the alloy). , or 0.003% to 0.035%). For example, the alloy is 0.001%, 0.002%, 0.003%, 0.004%, 0.005%, 0.006%, 0.007%, 0.008%, 0.009%, 0.010%, 0.011%0.012%, 0.013%, 0.014%, 0.015%, 0.016%, 0.017%, 0.018%, 0.019%, 0 .020%, 0.021% 0.022%, 0.023%, 0.024%, 0.025%, 0.026%, 0.027%, 0.028%, 0.029%, 0. 03%, 0.031%0.032%, 0.033%, 0.034%, 0.035%, 0.036%, 0.037%, 0.038%, 0.039%, 0.04 %, 0.041% 0.042%, 0.043%, 0.044%, 0.045%, 0.046%, 0.047%, 0.048%, 0.049%, 0.05% , 0.055%, 0.06%, 0.065%, 0.07%, 0.075%, 0.08%, 0.085%, 0.09%, 0.095%, 0.10% , 0.11%, 0.12%, 0.13%, 0.14%, or 0.15% Ti. Optionally, the alloy is 0.01% to 0.02%, 0.02% to 0.03%, 0.03% to 0.04%, 0.04% to 0.05%, 0.05% ～0.06%, 0.06%～0.07%, 0.07%～0.08%, 0.08%～0.09%, 0.09%～0.10%, 0.10% Contains ~0.11%, 0.11%-0.12%, 0.12%-0.13%, 0.13%-0.14%, or 0.14%-0.15% Ti be able to. In some cases, Ti may not be present in the alloy (ie, 0.0%). All percentages are by weight.

In some examples, the alloys described herein contain up to 0.20% (e.g., 0.01% to 0.20%, 0.01% to 0.15%, one or more rare earth elements (i.e., Sc, Y, La, Ce, , Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu). For example, the alloy may contain 0.01%, 0.02%, 0.03%, 0.04%, 0.05%, 0.06%, 0.07%, 0.08%, 0.09%, 0.10%, 0.11%, 0.12%, 0.13%, 0.14%, 0.15%, 0.16%, 0.17%, 0.18%, 0.19%, Or it can contain 0.20% of rare earth elements. Optionally, the alloy is 0.01% to 0.02%, 0.02% to 0.03%, 0.03% to 0.04%, 0.04% to 0.05%, 0.05% ～0.06%, 0.06%～0.07%, 0.07%～0.08%, 0.08%～0.09%, 0.09%～0.10%, 0.10% ～0.11%, 0.11%～0.12%, 0.12%～0.13%, 0.13%～0.14%, 0.14%～0.15%, 0.15% ~0.16%, 0.16%~0.17%, 0.17%~0.18%, 0.18%~0.19%, or 0.19%~0.20% rare earth elements can be included. All percentages are by weight.

In some examples, the alloys described herein contain up to 0.20% (e.g., 0.01% to 0.20%, or 0.05% to 0.15%, based on the total weight of the alloy). %) of one or more of Mo, Nb, Be, B, Co, Sn, Sr, V, In, Hf, Ag, and Ni. For example, the alloy may contain 0.05%, 0.06%, 0.07%, 0.08%, 0.09%, 0.10%, 0.11%, 0.12%, 0.13%, 0.14%, 0.15%, 0.16%, 0.17%, 0.18%, 0.19%, or 0.20% Mo, Nb, Be, B, Co, Sn, Sr, It can contain one or more of V, In, Hf, Ag, and Ni. Optionally, the alloy is 0.01% to 0.02%, 0.02% to 0.03%, 0.03% to 0.04%, 0.04% to 0.05%, 0.05% ～0.06%, 0.06%～0.07%, 0.07%～0.08%, 0.08%～0.09%, 0.09%～0.10%, 0.10% ～0.11%, 0.11%～0.12%, 0.12%～0.13%, 0.13%～0.14%, 0.14%～0.15%, 0.15% ~0.16%, 0.16%~0.17%, 0.17%~0.18%, 0.18%~0.19%, or 0.19%~0.20% Mo, Nb , Be, B, Co, Sn, Sr, V, In, Hf, Ag, and Ni. All percentages are by weight.

Optionally, the alloy compositions described herein include other additives in an amount of, for example, 0.05% or less, 0.04% or less, 0.03% or less, 0.02% or less, or 0.01% or less. may further contain trace elements (sometimes called impurities). These impurities can include, but are not limited to, Ga, Ca, Bi, Na, Pb, or combinations thereof. Therefore, Ga, Ca, Bi, Na, or Pb may be present in the alloy in an amount of 0.05% or less, 0.04% or less, 0.03% or less, 0.02% or 0.01%. May exist. The sum of all impurities may not exceed 0.15% (eg 0.10%). All percentages are by weight. The remaining proportion or balance of any alloy may be aluminum.

The aluminum alloy article 210 of FIGS. 2A-2D can include the novel aluminum alloy provided herein. The composition and method of manufacturing aluminum alloy article 210 can provide quench insensitivity and improved strength values compared to aluminum alloy article 110 shown in FIGS. 1A-1D. 2A-2D may illustrate one embodiment of an aluminum alloy article 210 that is quench insensitive. Similar to FIGS. 1A-1D, the aluminum alloy article 210 can be hardened at various hardening rates and subjected to corrosion testing to provide corrosion profiles to indicate hardening susceptibility for each of the different hardening rates. Starting from FIG. 2A, the aluminum alloy article 210 corresponds to a quenching rate of 550° C./sec. In embodiments, a quench rate of 550° C./sec can be achieved by water quenching. When hardened at a rapid hardening rate of 550° C./second and subjected to corrosion testing, the aluminum alloy product 210 can develop pitting corrosion 220, identified by material loss cavities. Similarly, in FIGS. 2B and 2C, pitting corrosion 220 can also occur when aluminum alloy article 210 is subjected to a 350° C./sec quench rate and corrosion test, as well as a 250° C./sec quench rate and corrosion test. In embodiments, a change in corrosion morphology from pitting 220 to intergranular corrosion 230 may occur at slower quench rates. For example, as shown in FIG. 2D, intergranular corrosion 230 may occur when an aluminum alloy product 210 is quenched at 5° C./sec and subjected to a corrosion test. In some cases, the aluminum alloy article 210 may exhibit intergranular corrosion 230 in a corrosion test when the quench rate is less than 50° C./sec. However, in other cases, when the quenching rate is greater than or equal to about 5°C/sec, such as 5°C/sec to 25°C/sec, 25°C/sec to 50°C/sec, 50°C/sec to 75°C/sec, seconds, 75℃/second to 100℃/second, 100℃/second to 125℃/second, 125℃/second to 150℃/second, 150℃/second to 175℃/second, 175℃/second to 200℃/second In some cases, the aluminum alloy article 210 exhibits little or no intergranular corrosion 230 in a corrosion test when the corrosion rate is between 200° C./second and 225° C./second, or between 225° C./second and 250° C./second. Slow quenching rates, such as less than 200°C/sec, less than 100°C/sec, less than 50°C/sec, or less than 25°C/sec, can be achieved by air quenching. Air hardening can be performed by air blasting the aluminum alloy product 210 or by holding the aluminum alloy product 210 at room temperature. Further details regarding hardening are provided below.

3A-3D also illustrate corrosion profiles at various quench rates for heat treated aluminum alloy products according to the present disclosure. The heat treated aluminum alloy product can be a quench-insensitive aluminum alloy product and is identified in FIGS. 3A-3D as aluminum alloy product 310. Aluminum alloy product 310 can include the novel aluminum alloys provided herein. As such, aluminum alloy product 310 may exhibit improved quench insensitivity and correspondingly improved strength values, particularly when compared to aluminum alloy product 110 shown in FIGS. 1A-1D. Aluminum alloy 310 can be hardened according to the hardening method described herein. Similar to the figures discussed above, aluminum alloy 310 can be hardened at a rapid hardening rate of 550°C/sec. As shown in FIG. 3A, the aluminum alloy product 310 can develop pitting corrosion 320 when hardened at this hardening rate and subjected to a corrosion test. Pitting corrosion 320 can also occur at lower quench rates. As shown in FIGS. 3B and 3C, the aluminum alloy article 310 can undergo pitting corrosion 320 in a corrosion test when quenched at quench rates of 350° C./sec and 250° C./sec. As shown in FIG. 3D, the corrosion morphology can change to intergranular corrosion 130 when the quenching rate is slowed to less than 250° C./sec, such as 5° C./sec. Accordingly, FIGS. 2A-2D and 3A-3D illustrate one aspect of the quench insensitivity exhibited by the novel aluminum alloys provided herein, specifically at quench rates less than 250° C./sec. This is considered to indicate that the corrosion form shown in the quenching test does not change to intergranular corrosion until 130.

1A to 3D are considered to show the types of corrosion that are formed when a hardened aluminum alloy product is subjected to a corrosion test, whereas FIG. This is a quantification of the extent to which this occurs. FIG. 4 shows an exemplary graph showing a comparison of the corrosion depth of each corrosion zone at different quench rates for a quench-sensitive aluminum alloy product and a heat-treated aluminum alloy product made in accordance with the present disclosure. FIG. 4 shows three separate graphs arranged side by side to facilitate comparison of different aluminum alloy products. FIG. 4 includes graphs 405, 410, and 415, each showing data for different aluminum alloy products that are quenched at different rates. Each of the aluminum alloy products shown in FIG. 1 may have undergone the same treatment prior to being subjected to corrosion testing according to ASTM G110, ASTM G129, and/or ASTM G139 standards. These standards specify aluminum corrosion tests that allow reproducible measurements of the corrosion susceptibility of specific materials. In accordance with the ASTM G110 standard, each aluminum alloy article used in Figure 4 can be soaked in a solution of sodium chloride and hydrogen peroxide. Each of the aluminum alloy products can be soaked for 24 hours and/or 48 hours. Data corresponding to each of the aluminum alloy products was collected and used to create graphs 405, 410, and 415.

Graph 405 shows the depth of corrosion that occurs at various quench rates in a quench-sensitive aluminum alloy product. Graph 405 corresponds to aluminum alloy product 110 and represents an AA7075 aluminum alloy product. As previously discussed with respect to FIGS. 1A-1D, aluminum alloy product 110 is quench sensitive and may exhibit a change in corrosion morphology from pitting to intergranular corrosion at high quench rates. Graph 405 shows similar results, showing that pitting corrosion 420 occurs at rapid quench rates such as 550° C./sec and 350° C./sec. However, when the quenching rate is lowered to 250° C./sec, the corrosion morphology may change to intergranular corrosion 430. As highlighted by the box in graph 405 labeled as "IGC Region," aluminum alloy article 110 can undergo intergranular corrosion 430 when quenched at any rate below 250° C./sec. In some cases, from about 5°C/second to about 250°C/second or from about 5°C/second to about 350°C/second, such as from 5°C/second to 250°C/second, from 5°C/second to 260°C/second, 5°C/second to 270°C/second, 5°C/second to 280°C/second, 5°C/second to 290°C/second, 5°C/second to 300°C/second, 5°C/second to 310°C/second, Corrosion processed using a quenching rate of 5°C/s to 320°C/s, 5°C/s to 330°C/s, 5°C/s to 340°C/s, or 5°C/s to 345°C/s Intergranular corrosion may be observed in the AA7075 aluminum alloy product after testing.

Graph 405 also shows the corrosion depth. Corrosion depth can refer to the extent to which corrosion occurs from the surface of an aluminum alloy product into the bulk of the aluminum alloy. In other words, corrosion depth may refer to the depth into the bulk of an aluminum alloy product that corrosion may be present in a corrosion test. Graph 405 may include or represent data from multiple quench tests at each quench rate, or data from multiple locations on the sample after a corrosion test. Therefore, each block corresponds to the average observed corrosion depth, and the standard deviation or error bar indicates the full range of corrosion depths observed during the test.

As shown in graph 405, as the quench rate decreases, the depth of corrosion may increase. Since it would be desirable to limit corrosion, it would also be desirable to have a smaller corrosion depth. As shown in graph 405, at a quench rate of 550° C./sec, corrosion 420 extends to an average depth of about 50 μm within the aluminum alloy product and may correspond to pitting corrosion, for example. When the quenching rate is slowed to 350° C./sec, corrosion 420 extends further into the aluminum alloy product to an average depth of about 75 μm, which may also correspond to pitting corrosion. When the corrosion mode changes to intergranular corrosion, the corrosion depth may continue to increase. The corrosion depth of corrosion 430 can be reduced slightly if the aluminum alloy product is quenched at a rate of 150° C./sec, but this point includes a large error bar and the maximum corrosion depth is very large. The average corrosion depth of corrosion 430 at a quench rate of 5° C./sec to 250° C./sec may still be greater than the corrosion depth at a rapid quench rate such as 550° C./sec. Even with a slow quenching rate of 5° C./sec, corrosion can extend to a corrosion depth of about 85 μm.

Graphs 410 and 415 illustrate corrosion depths observed in additional aluminum alloy products according to the present disclosure. The aluminum alloy products whose data is shown in graphs 410 and 415 may be heat treated aluminum alloy products. The heat treated aluminum alloy product may be a quench-insensitive aluminum alloy product, such as aluminum alloy products 210 and 310. The observed heat treated aluminum alloy product may be an aluminum alloy product made according to the methods and compositions described herein. For example, such an aluminum alloy product can be manufactured from an aluminum alloy having the following elemental composition as shown in Table 5.

As shown in graph 410, when the aluminum alloy product 4A is quenched and subjected to a corrosion test, corrosion 420 can be observed at most quenching speeds. For example, pitting corrosion may occur even at a slow quenching rate of 50° C./sec or less. According to the obtained data, even when the quenching rate was slowed to 5° C./sec, intergranular corrosion 430 (IGC) occurred in the aluminum alloy product 4A. Furthermore, the corrosion that occurred in the aluminum alloy product 4A whose data is shown in graph 410 has an overall smaller corrosion depth than the quench-sensitive aluminum alloy product shown in graph 405, regardless of the type of corrosion. Even at the slowest quenching rate of 5° C./sec, smaller corrosion depths are observed. Although corrosion depth may increase somewhat as the quench rate decreases, the rate of increase in corrosion depth over quench rate may remain minimal. For example, the corrosion depth of corrosion 420 shown in graph 410 at a quench rate of 550°C/sec may be approximately 40 μm, whereas the corrosion depth at a quench rate of 5°C/sec may be approximately 50 μm. It is only large. Overall, the corrosion depth shown in graph 410 is relatively constant compared to the quench-sensitive aluminum alloy product of graph 405. Additionally, the depth of corrosion can be relatively constant even when the same test is performed multiple times, as indicated by the standard deviation bar. The lack of variation between different runs of the same test (i.e., multiple quenchings at the same quenching rate) indicates that changes in operating conditions can have minimal impact on corrosion susceptibility. , which is considered to further indicate the quenching insensitivity of aluminum alloy products.

Graph 415 may demonstrate similar quench insensitivity for another aluminum alloy product 4B described herein. Similar to aluminum alloy product 4A whose data is shown in graph 410, the corrosion morphology of the aluminum alloy product represented by graph 415 may not change from pitting to intergranular corrosion up to a quench rate of 5° C./sec or less. Unexpectedly, as the quench rate decreases, the corrosion depth may decrease in some cases. This result is unexpected when comparing the trends in corrosion depth with respect to quench rate in graphs 405 and 410, which show that corrosion depth increases with decreasing quench rate. In graph 415, a rate of 50° C./sec to 250° C./sec is believed to represent pitting corrosion as the predominant corrosion 420 extending to a corrosion depth of about 25 μm or less. As shown in graphs 410 and 415, when using a quenching rate of 5° C./sec to 550° C./sec, the corrosion depths in the corrosion test are 0 μm to 300 μm, 5 μm to 300 μm, 0 μm to 200 μm, and 5 μm to 100 μm. , or 10 μm to 80 μm. For example, if the quenching rate is 125° C./sec, the corrosion depth may be between 5 μm and 150 μm or between 25 μm and 50 μm.

As discussed above, quench susceptibility can affect the properties of aluminum alloy products, especially the strength values. Exemplary strength properties can include yield strength, tensile strength, particle elongation, and strain ratio. 5-8 depict exemplary graphs showing comparative data between quench-sensitive aluminum alloy products and heat-treated aluminum alloy products made according to the methods and techniques provided herein. Quench sensitive aluminum alloy products are represented by the data shown as "C" (black squares) in the graphs of FIGS. 5-8. In some embodiments, the aluminum alloy product C can include a 7XXX series aluminum alloy product manufactured according to conventional methods and techniques. For example, aluminum alloy product C may correspond to an AA7075 aluminum alloy product (similar to aluminum alloy product 110). The data shown as "5A" (red circles) and "5B" (blue triangles) on the graphs of FIGS. 5-8 represent heat-treated aluminum alloy products that are quench-insensitive aluminum alloy products. Aluminum alloy products 5A and 5B can be manufactured from aluminum alloys having the following elemental compositions shown in Table 6.

Each of aluminum alloy products 5A, 5B, and C can be prepared prior to undergoing the same mechanical testing procedure. To prepare aluminum alloy products 5A, 5B, and C, each aluminum alloy product can be solutionized to a first temperature of 480°C. The aluminum alloy product is maintained or held at the first temperature for 5 minutes, and then quenched in a water bath maintained at a temperature of 25°C, 55°C, 65°C, 75°C, or 85°C, respectively. Quenching rates of 550°C/sec, 350°C/sec, 250°C/sec, 150°C/sec, and 50°C/sec can be obtained. To obtain a quenching rate of 5° C./sec, the aluminum alloy product may be air quenched. After quenching, the aluminum alloy product can be subjected to a one-step aging treatment. Exemplary aging processes may include T6 or T7 tempering or precipitation hardening. In each of the graphs of FIGS. 5-8, the aluminum alloy product can be subjected to an aging treatment that allows the product to be reheated to a temperature of 125° C. for 25 hours. After this aging process, the aluminum alloy product can be subjected to mechanical testing, corrosion testing according to ASTM G110, stress corrosion evaluation according to ASTM G129, and/or stress corrosion evaluation according to ASTM G139. Figures 5-9, 10A-10C, and 11A-11C below show data obtained from testing aluminum alloy products 5A, 5B, and C prepared and conducted according to the process described above. .

FIG. 5 shows a graph 500 illustrating a comparison of the yield strengths of aluminum alloy products 5A, 5B, and C. Yield strength, also known as yield stress, is a material property that defines the stress at which a material begins to deform plastically. Plastic deformation is the permanent distortion of a product under stress such as elongation, compression, buckling, bending, or twisting. Yield strength is an important factor characterizing the strength of aluminum alloy products.

As shown in graph 500, aluminum alloy products 5A and 5B made from the quench-insensitive 7XXX series aluminum alloy compositions shown above and made according to the techniques provided herein are aluminum alloy It can exhibit superior yield strength compared to Product C. For example, aluminum alloy products 5A and 5B can exhibit a yield strength of 400 MPa to 600 MPa. Specifically, aluminum alloy products 5A and 5B can exhibit yield strengths of 500 MPa to 650 MPa at quenching rates of 50° C./sec to 550° C./sec. For example, aluminum alloy products 5A and 5B can exhibit a yield strength of 560 MPa to 580 MPa when the quenching rate is 125° C./sec. In some embodiments, the quench-insensitive aluminum alloy product has a yield strength of from about 550 MPa to about 600 MPa at quench rates of 50° C./sec to 550° C./sec; Depending on the quenching rate, a yield strength of about 525 MPa to about 600 MPa can be exhibited. For example, at a quenching rate of 550°C/sec, aluminum alloy products 5A and 5B, respectively. Yield strengths of about 572 MPa and about 579 MPa can be exhibited. In contrast, aluminum alloy product C can exhibit a yield strength of about 532 MPa at a quenching rate of 550° C./sec. At quenching rates of 350 °C/sec and 50 °C/sec, aluminum alloy product 5A can exhibit yield strengths of approximately 572 MPa and 553 MPa, respectively, and aluminum alloy product 5B can exhibit yield strengths of approximately 575 MPa and 569 MPa, respectively. be able to. In contrast, aluminum alloy product C can exhibit yield strengths of approximately 524 and 509 at quenching rates of 350° C./sec and 50° C./sec, respectively.

The improved yield strength of aluminum alloy products 5A and 5B may be more apparent at lower quench rates, such as a 5° C./sec quench rate. At a quenching rate of 5°C/sec, aluminum alloy products 5A and 5B exhibited yield strengths of approximately 439 MPa and 489 MPa, which is approximately 100 MPa higher than the yield strength of aluminum alloy product C at a quenching rate of 5°C/sec. obtain. At 5° C./sec, aluminum alloy product C exhibits a yield strength of approximately 347 MPa. Advantageously, for aluminum alloy products 5A and 5B, the yield strength decreases by less than 25% when the quenching rate is slowed from 550° C. to 5° C./sec. In contrast, aluminum alloy product C exhibits a reduction of more than 25%, for example 35%, when the quenching rate is slowed from 550° C. to 5° C./sec.

FIG. 6 shows a graph 600 showing a comparison of the ultimate tensile strength of aluminum alloy products 5A, 5B, and C. Ultimate tensile strength (UTS) may correspond to a material's ability to withstand elongation loads. In contrast to stress testing, where the force applied to a material tends to reduce the size of the material, tensile strength stress tests the material's ability to withstand elongation. Ultimate tensile strength can be measured by the maximum stress that a material can withstand when stretched or pulled until it breaks.

Similar to yield strength, aluminum alloy products 5A and 5B can exhibit superior ultimate tensile strength over different quenching rates compared to aluminum alloy product C. As shown in graph 600, aluminum alloy products 5A and 5B exhibit ultimate tensile strengths (also referred to herein as tensile strength) of 500 MPa to 650 MPa at quench rates of 5° C./sec to 550° C./sec. For example, aluminum alloy products 5A and 5B can exhibit an ultimate tensile strength of 605 MPa to 615 MPa when the quenching rate is 125° C./sec. In some embodiments, the quench-insensitive aluminum alloy product can exhibit a tensile strength of 585 MPa to 625 MPa at a quench rate of 50° C./sec to 550° C./sec. For example, at a quenching rate of 550° C./sec, aluminum alloy products A and B can exhibit tensile strengths of about 614 MPa and about 618 MPa, respectively. In contrast, aluminum alloy product C exhibits a tensile strength of about 584 MPa at a quenching rate of 550° C./sec. At quenching rates of 350 °C/sec and 50 °C/sec, aluminum alloy product 5A can exhibit tensile strengths of about 614 MPa and 593 MPa, respectively, and aluminum alloy product 5B can exhibit tensile strengths of about 618 MPa and 605 MPa, respectively. be able to. In contrast, aluminum alloy product C can exhibit yield strengths of about 578 MPa and about 566 MPa at quenching rates of 350° C./sec and 50° C./sec, respectively.

Even at slow quenching rates such as 5° C./sec, aluminum alloy products 5A and 5B exhibit higher tensile strength compared to aluminum alloy product C. For example, at a quench rate of 5° C./sec, a quench-insensitive aluminum alloy product can exhibit a tensile strength of about 475 MPa to about 550 MPa. As shown in FIG. 6, the tensile strength at 5° C./sec of aluminum alloy products 5A and 5B is about 507 MPa and about 544 MPa, respectively. In contrast, aluminum alloy product C exhibits a tensile strength of about 458 MPa when hardened at a hardening rate of 5°C/sec.

Referring now to FIG. 7, the total elongation (TE) of aluminum alloy articles 5A, 5B, and C when subjected to stress is shown. The total elongation rate, expressed as a rate of change on a fixed gauge, may correspond to the rate at which the material can be stretched until it breaks. In some embodiments, total elongation can be a rough indicator of the formability of an aluminum alloy product.

As shown by graph 700, aluminum alloy products 5A and 5B can exhibit a total elongation of 10.00% to 15.00% at quench rates of 5° C./sec to 550° C./sec. For example, at a rapid quenching rate such as 550°C/sec, aluminum alloy products 5A and 5B exhibit total elongation of about 14.70% and about 14.31%, respectively. As the quenching rate slows down to 350°C/sec, 50°C/sec, and 5°C/sec, aluminum alloy article 5A loses about 15.10%, about 13.29%, and about 10.46%, respectively. Shows the total elongation rate. Similarly, aluminum alloy product 5B has a total elongation rate of 14.48%, 13.65%, and 10.15% when the quenching rate is slowed to 350°C/sec, 50°C/sec, and 5°C/sec. shows. When the quenching rate is 125° C./sec, aluminum alloy products 5A and 5B can exhibit a total elongation of 13.80% to 14.20%. In some cases, quench-insensitive aluminum alloy products can exhibit uniform elongation rates of 7.50% to 10.50%. For example, aluminum alloy products 5A and 5B can exhibit a uniform elongation of 9.00% to 9.60% when the quenching rate is 125° C./sec.

As shown in FIG. 7, aluminum alloy product C can exhibit a total elongation of 14.09% to 15.25% at quenching rates of 5° C./sec to 550° C./sec. For example, aluminum alloy product C can exhibit a total elongation of greater than 15.00% at a quenching rate of 550° C./sec. As the quenching rate slows down to 350°C/sec, 50°C/sec, and 5°C/sec, aluminum alloy article C loses about 14.60%, about 14.31%, and about 14.09%, respectively. It can indicate the total elongation rate. Uniform elongation may correspond to the elongation of the material at maximum load before necking occurs. In some cases, uniform elongation may represent the ductility or formability of the material under uniaxial deformation.

FIG. 8 shows a graph 800 showing a comparison of strain ratios exhibited by aluminum alloy products 5A, 5B, and C. Strain ratio can be a useful measure of stress corrosion cracking susceptibility. For example, it is believed that the lower the strain ratio, the higher the susceptibility of the aluminum alloy product to stress corrosion cracking. As shown by graph 800, the strain ratios exhibited by aluminum alloy products 5A and 5B can be consistently higher than the strain ratios exhibited by aluminum alloy product C. Even at slow quenching rates such as 5° C./sec, where intergranular corrosion may be observed, the strain ratios exhibited by aluminum alloy products 5A and 5B are higher than that exhibited by aluminum alloy product C. It can be.

In embodiments, the quench-insensitive aluminum alloy product may exhibit a strain ratio of 0.3 to 1.0 at quench rates of 5° C./sec to 550° C./sec. In other embodiments, the quench-insensitive aluminum alloy product may have a strain ratio of 0.5 to 1.0 when quenched at a rate of 250° C./sec to 500° C./sec. When the quenching rate is 125° C./sec, aluminum alloy products 5A and 5B can exhibit a strain ratio of 0.375 to 0.425. For example, when aluminum alloy products 5A and 5B are hardened at a hardening rate of 550° C./sec, the strain ratio can be between 0.5 and 1.0. As shown by graph 800, at all quench rates tested, aluminum alloy products 5A and 5B can exhibit strain ratios higher than 0.3. In contrast, the strain ratio of aluminum alloy product C can be less than 0.3 over all quenching rates tested. This is considered to indicate that aluminum alloy product C is more susceptible to stress corrosion cracking than aluminum alloy products 5A and 5B.

FIG. 9 shows a graph 900 showing a comparison of precipitate-free zones for aluminum alloy products 5A, 5B, and C. In the aging process, precipitation can occur as solutes and other hardening compounds precipitate out of the aluminum alloy solution. Zones or pockets with little or no precipitates may be referred to as precipitate-free zones. Since precipitates such as solutes nucleate non-uniformly in the pores, a precipitate-free zone may occur. Since grain boundaries can serve as sinks for vacancies, it is thought that even if the alloy solution is supersaturated with solute, nucleation of precipitates cannot occur in regions adjacent to grain boundaries. Precipitate-free zones are considered undesirable because they can act as weak areas. For example, precipitate-free zones are believed to be more susceptible to corrosion attack than other points in an aluminum alloy. Therefore, in order to improve the strength and corrosion susceptibility of aluminum alloy products, it may be desirable to reduce the amount and width of the precipitate-free zone.

As shown by graph 900, the width of the precipitate-free zone formed during the aging process may increase as the quenching rate decreases. Aluminum alloy product C may produce a larger precipitate-free zone during quenching compared to aluminum alloy products 5A and 5B. For example, at a rapid quenching rate such as 550° C./sec, aluminum alloy product C can produce a precipitate-free zone with an average width of about 45 nm. In contrast, at a quenching rate of 550° C./sec, aluminum alloy products 5A and 5B can produce precipitate-free zones with average widths of about 35 nm and 32 nm, respectively. Even at slow quenching rates, aluminum alloy product C may produce a larger precipitate-free zone than aluminum alloy products 5A and 5B. For example, at 5° C./sec, aluminum alloy product C can produce a precipitate-free zone with an average width of about 200 nm, whereas aluminum alloy products 5A and 5B have average widths of about 90 nm and 150 nm, respectively. Precipitate-free zones can occur.

10A-10C and 11A-11C show images corresponding to aluminum alloy products 5A and C shown in graph 900 of FIG. For example, the images shown in FIGS. 10A, 10B, and 10C may be taken using scanning transmission electron microscopy (STEM) and may correspond to one or more data points on graph 900. A precipitation zone 1010 is shown. That is, the width or measurement of the precipitation-free zone 1010 shown in FIGS. 10-11C can be used in the graph 900.

10A to 10C correspond to aluminum alloy product C. FIG. 10A shows a precipitate-free zone 1010 that occurs after aluminum alloy product C is quenched at a rate of 550° C./sec. Figures 10B and 10C show a precipitate-free zone 1010 that occurs after aluminum alloy article C is quenched at rates of 150°C/sec and 5°C/sec. As shown, as the quenching rate decreases, the size (eg, width) of the precipitate-free zone 1010 may increase. FIGS. 11A, 11B, and 11C show similar images taken using STEM methods, showing a precipitate-free zone 1010 occurring in aluminum alloy product 5A. FIG. 11A shows a precipitate-free zone 1010 that occurs after aluminum alloy product 5A is quenched at 550° C./sec. Similarly, FIGS. 11B and 11C show a precipitate-free zone 1110 that occurs after aluminum alloy article 5A is quenched at 150° C./sec and 5° C./sec, respectively. Although the precipitate-free zone 1110 of the aluminum alloy product 5A may become larger as the quenching rate becomes slower, the width of the precipitate-free zone is smaller than the width of the precipitate-free zone 1010 that occurs in the aluminum alloy product C quenched at the same quenching rate. It can be. This is also illustrated by the data shown in graph 900 of FIG. For example, as shown in graph 900, when aluminum alloy product 5A is quenched at 0.5° C./sec to 125° C./sec, the width of the precipitate-free zone can range from 10 nm to 110 nm. Specifically, when the aluminum alloy product 5A is quenched at 125° C., the aluminum alloy product 5A can produce a precipitate-free zone width of 10 nm to 13 nm.

It should be noted that while the improved corrosion resistance and mechanical properties mentioned above are shown with respect to a particular hardening rate, this is not intended to be limiting. Similar properties can be exhibited over a wide range of quenching rates. The improved corrosion resistance and mechanical properties described with reference to FIGS. 1-9 are achieved in the aluminum alloy products provided herein when the quenching rate is from about 0°C/sec to about 550°C/sec. can be shown. For example, the quenching rate can be in the following ranges: 5°C/s to 550°C/s, 10°C/s to 550°C/s, 15°C/s to 550°C/s, 20°C/s to 550°C/s. °C/sec, 25 °C/sec to 550 °C/sec, 30 °C/sec to 550 °C/sec, 35 °C/sec to 550 °C/sec, 40 °C/sec to 550 °C/sec, 45 °C/sec to 550 °C/sec, 50 °C/sec to 550 °C/sec, 55 °C/sec to 550 °C/sec, 60 °C/sec to 550 °C/sec, 65 °C/sec to 550 °C/sec, 70 °C/sec to 550 °C/sec, 75 °C/sec to 550 °C/sec, 80 °C/sec to 550 °C/sec, 85 °C/sec to 550 °C/sec, 90 °C/sec to 550 °C/sec, 95 °C/sec to 550 °C/sec, 100 °C/sec to 550 °C/sec, 105 °C/sec to 550 °C/sec, 110 °C/sec to 550 °C/sec, 115 °C/sec to 550 °C/sec, 120 °C/sec to 550 °C/sec, 125 °C/sec to 550 °C/sec, 130 °C/sec to 550 °C/sec, 135 °C/sec to 550 °C/sec, 140 °C/sec to 550 °C/sec, 145 °C/sec to 550 °C/sec, 150 °C/sec to 550 °C/sec, 155 °C/sec to 550 °C/sec, 160 °C/sec to 550 °C/sec, 165 °C/sec to 550 °C/sec, 170 °C/sec to 550 °C/sec, 175 °C/sec to 550 °C/sec, 180 °C/sec to 550 °C/sec, 185 °C/sec to 550 °C/sec, 190 °C/sec to 550 °C/sec, 195 °C/sec to 550 °C/sec, 200 °C/sec to 550 °C/sec, 205 °C/sec to 550 °C/sec, 210 °C/sec to 550 °C/sec, 215 °C/sec to 550 °C/sec, 220 °C/sec to 550 °C/sec, 225 °C/sec to 550 °C/sec, 230 °C/sec to 550 °C/sec, 235 °C/sec to 550 °C/sec, 240 °C/sec to 550 °C/sec, 245 °C/sec to 550 °C/sec, 250 °C/sec to 550 °C/sec, 255 °C/sec to 550 °C/sec, 260 °C/sec to 550 °C/sec, 265 °C/sec to 550 °C/sec, 270 °C/sec to 550 °C/sec, 275 °C/sec to 550 °C/sec, 280 °C/sec to 550 °C/sec, 285 °C/sec to 550 °C/sec, 290 °C/sec to 550 °C/sec, 295 °C/sec to 550 °C/sec, 300 °C/sec to 550 °C/sec, 305 °C/sec to 550 °C/sec, 310 °C/sec to 550 °C/sec, 315 °C/sec to 550 °C/sec, 320 °C/sec to 550 °C/sec, 325 °C/sec to 550 °C/sec, 330 °C/sec to 550 °C/sec, 335 °C/sec to 550 °C/sec, 340 °C/sec to 550 °C/sec, 345 °C/sec to 550 °C/sec, 350 °C/sec to 550 °C/sec, 355 °C/sec to 550 °C/sec, 360 °C/sec to 550 °C/sec, 365 °C/sec to 550 °C/sec, 370 °C/sec to 550 °C/sec, 375 °C/sec to 550 °C/sec, 380 °C/sec to 550 °C/sec, 385 °C/sec to 550 °C/sec, 390 °C/sec to 550 °C/sec, 395 °C/sec to 550 °C/sec, 400 °C/sec to 550 °C/sec, 405 °C/sec to 550 °C/sec, 410 °C/sec to 550 °C/sec, 415 °C/sec to 550 °C/sec, 420 °C/sec to 550 °C/sec, 425 °C/sec to 550 °C/sec, 430 °C/sec to 550 °C/sec, 435 °C/sec to 550 °C/sec, 440 °C/sec to 550 °C/sec, 445 °C/sec to 550 °C/sec, 450 °C/sec to 550 °C/sec, 455 °C/sec to 550 °C/sec, 460 °C/sec to 550 °C/sec, 465 °C/sec to 550 °C/sec, 470 °C/sec to 550 °C/sec, 475 °C/sec to 550 °C/sec, 480 °C/sec to 550 °C/sec, 485 °C/sec to 550 °C/sec, 490 °C/sec to 550 °C/sec, 495 °C/sec to 550 °C/sec, 500 °C/sec to 550 °C/sec, 505 °C/sec to 550 °C/sec, 510 °C/sec to 550 °C/sec, 515 °C/sec to 550 °C/sec, 520 °C/sec to 550 °C/sec, 525 °C/sec to 550 °C/sec, 530 °C/sec to 550 °C/sec, 535 °C/sec to 550 °C/sec, 540 °C/sec to 550 °C/sec, 545 °C/sec to 550 °C/sec, 5 °C/sec to 525 °C/sec, 10 °C/sec to 525 °C/sec, 15 °C/sec to 525 °C/sec, 20 °C/sec to 525 °C/sec, 25 °C/sec to 525 °C/sec, 30 °C/sec to 525 °C/sec, 35 °C/sec to 525 °C/sec, 40 °C/sec to 525 °C/sec, 45 °C/sec to 525 °C/sec, 50 °C/sec to 525 °C/sec, 55 °C/sec to 525 °C/sec, 60 °C/sec to 525 °C/sec, 65 °C/sec to 525 °C/sec, 70 °C/sec to 525 °C/sec, 75 °C/sec to 525 °C/sec, 80 °C/sec to 525 °C/sec, 85 °C/sec to 525 °C/sec, 90 °C/sec to 525 °C/sec, 95 °C/sec to 525 °C/sec, 100 °C/sec to 525 °C/sec, 105 °C/sec to 525 °C/sec, 110 °C/sec to 525 °C/sec, 115 °C/sec to 525 °C/sec, 120 °C/sec to 525 °C/sec, 125 °C/sec to 525 °C/sec, 130 °C/sec to 525 °C/sec, 135 °C/sec to 525 °C/sec, 140 °C/sec to 525 °C/sec, 145 °C/sec to 525 °C/sec, 150 °C/sec to 525 °C/sec, 155 °C/sec to 525 °C/sec, 160 °C/sec to 525 °C/sec, 165 °C/sec to 525 °C/sec, 170 °C/sec to 525 °C/sec, 175 °C/sec to 525 °C/sec, 180 °C/sec to 525 °C/sec, 185 °C/sec to 525 °C/sec, 190 °C/sec to 525 °C/sec, 195 °C/sec to 525 °C/sec, 200 °C/sec to 525 °C/sec, 205 °C/sec to 525 °C/sec, 210 °C/sec to 525 °C/sec, 215 °C/sec to 525 °C/sec, 220 °C/sec to 525 °C/sec, 225 °C/sec to 525 °C/sec, 230 °C/sec to 525 °C/sec, 235 °C/sec to 525 °C/sec, 240 °C/sec to 525 °C/sec, 245 °C/sec to 525 °C/sec, 250 °C/sec to 525 °C/sec, 255 °C/sec to 525 °C/sec, 260 °C/sec to 525 °C/sec, 265 °C/sec to 525 °C/sec, 270 °C/sec to 525 °C/sec, 275 °C/sec to 525 °C/sec, 280 °C/sec to 525 °C/sec, 285 °C/sec to 525 °C/sec, 290 °C/sec to 525 °C/sec, 295 °C/sec to 525 °C/sec, 300 °C/sec to 525 °C/sec, 305 °C/sec to 525 °C/sec, 310 °C/sec to 525 °C/sec, 315 °C/sec to 525 °C/sec, 320 °C/sec to 525 °C/sec, 325 °C/sec to 525 °C/sec, 330 °C/sec to 525 °C/sec, 335 °C/sec to 525 °C/sec, 340 °C/sec to 525 °C/sec, 345 °C/sec to 525 °C/sec, 350 °C/sec to 525 °C/sec, 355 °C/sec to 525 °C/sec, 360 °C/sec to 525 °C/sec, 365 °C/sec to 525 °C/sec, 370 °C/sec to 525 °C/sec, 375 °C/sec to 525 °C/sec, 380 °C/sec to 525 °C/sec, 385 °C/sec to 525 °C/sec, 390 °C/sec to 525 °C/sec, 395 °C/sec to 525 °C/sec, 400 °C/sec to 525 °C/sec, 405 °C/sec to 525 °C/sec, 410 °C/sec to 525 °C/sec, 415 °C/sec to 525 °C/sec, 420 °C/sec to 525 °C/sec, 425 °C/sec to 525 °C/sec, 430 °C/sec to 525 °C/sec, 435 °C/sec to 525 °C/sec, 440 °C/sec to 525 °C/sec, 445 °C/sec to 525 °C/sec, 450 °C/sec to 525 °C/sec, 455 °C/sec to 525 °C/sec, 460 °C/sec to 525 °C/sec, 465 °C/sec to 525 °C/sec, 470 °C/sec to 525 °C/sec, 475 °C/sec to 525 °C/sec, 480 °C/sec to 525 °C/sec, 485 °C/sec to 525 °C/sec, 490 °C/sec to 525 °C/sec, 495 °C/sec to 525 °C/sec, 500 °C/sec to 525 °C/sec, 505 °C/sec to 525 °C/sec, 510 °C/sec to 525 °C/sec, 515 °C/sec to 525 °C/sec, 520 °C/sec to 525 °C/sec, 5 °C/sec to 500 °C/sec, 10 °C/sec to 500 °C/sec, 15 °C/sec to 500 °C/sec, 20 °C/sec to 500 °C/sec, 25 °C/sec to 500 °C/sec, 30 °C/sec to 500 °C/sec, 35 °C/sec to 500 °C/sec, 40 °C/sec to 500 °C/sec, 45 °C/sec to 500 °C/sec, 50 °C/sec to 500 °C/sec, 55 °C/sec to 500 °C/sec, 60 °C/sec to 500 °C/sec, 65 °C/sec to 500 °C/sec, 70 °C/sec to 500 °C/sec, 75 °C/sec to 500 °C/sec, 80 °C/sec to 500 °C/sec, 85 °C/sec to 500 °C/sec, 90 °C/sec to 500 °C/sec, 95 °C/sec to 500 °C/sec, 100 °C/sec to 500 °C/sec, 105 °C/sec to 500 °C/sec, 110 °C/sec to 500 °C/sec, 115 °C/sec to 500 °C/sec, 120 °C/sec to 500 °C/sec, 125 °C/sec to 500 °C/sec, 130 °C/sec to 500 °C/sec, 135 °C/sec to 500 °C/sec, 140 °C/sec to 500 °C/sec, 145 °C/sec to 500 °C/sec, 150 °C/sec to 500 °C/sec, 155 °C/sec to 500 °C/sec, 160 °C/sec to 500 °C/sec, 165 °C/sec to 500 °C/sec, 170 °C/sec to 500 °C/sec, 175 °C/sec to 500 °C/sec, 180 °C/sec to 500 °C/sec, 185 °C/sec to 500 °C/sec, 190 °C/sec to 500 °C/sec, 195 °C/sec to 500 °C/sec, 200 °C/sec to 500 °C/sec, 205 °C/sec to 500 °C/sec, 210 °C/sec to 500 °C/sec, 215 °C/sec to 500 °C/sec, 220 °C/sec to 500 °C/sec, 225 °C/sec to 500 °C/sec, 230 °C/sec to 500 °C/sec, 235 °C/sec to 500 °C/sec, 240 °C/sec to 500 °C/sec, 245 °C/sec to 500 °C/sec, 250 °C/sec to 500 °C/sec, 255 °C/sec to 500 °C/sec, 260 °C/sec to 500 °C/sec, 265 °C/sec to 500 °C/sec, 270 °C/sec to 500 °C/sec, 275 °C/sec to 500 °C/sec, 280 °C/sec to 500 °C/sec, 285 °C/sec to 500 °C/sec, 290 °C/sec to 500 °C/sec, 295 °C/sec to 500 °C/sec, 300 °C/sec to 500 °C/sec, 305 °C/sec to 500 °C/sec, 310 °C/sec to 500 °C/sec, 315 °C/sec to 500 °C/sec, 320 °C/sec to 500 °C/sec, 325 °C/sec to 500 °C/sec, 330 °C/sec to 500 °C/sec, 335 °C/sec to 500 °C/sec, 340 °C/sec to 500 °C/sec, 345 °C/sec to 500 °C/sec, 350 °C/sec to 500 °C/sec, 355 °C/sec to 500 °C/sec, 360 °C/sec to 500 °C/sec, 365 °C/sec to 500 °C/sec, 370 °C/sec to 500 °C/sec, 375 °C/sec to 500 °C/sec, 380 °C/sec to 500 °C/sec, 385 °C/sec to 500 °C/sec, 390 °C/sec to 500 °C/sec, 395 °C/sec to 500 °C/sec, 400 °C/sec to 500 °C/sec, 405 °C/sec to 500 °C/sec, 410 °C/sec to 500 °C/sec, 415 °C/sec to 500 °C/sec, 420 °C/sec to 500 °C/sec, 425 °C/sec to 500 °C/sec, 430 °C/sec to 500 °C/sec, 435 °C/sec to 500 °C/sec, 440 °C/sec to 500 °C/sec, 445 °C/sec to 500 °C/sec, 450 °C/sec to 500 °C/sec, 455 °C/sec to 500 °C/sec, 460 °C/sec to 500 °C/sec, 465 °C/sec to 500 °C/sec, 470 °C/sec to 500 °C/sec, 475 °C/sec to 500 °C/sec, 480 °C/sec to 500 °C/sec, 485 °C/sec to 500 °C/sec, 490 °C/sec to 500 °C/sec, 495 °C/sec to 500 °C/sec, 5 °C/sec to 475 °C/sec, 10 °C/sec to 475 °C/sec, 15 °C/sec to 475 °C/sec, 20 °C/sec to 475 °C/sec, 25 °C/sec to 475 °C/sec, 30 °C/sec to 475 °C/sec, 35 °C/sec to 475 °C/sec, 40 °C/sec to 475 °C/sec, 45 °C/sec to 475 °C/sec, 50 °C/sec to 475 °C/sec, 55 °C/sec to 475 °C/sec, 60 °C/sec to 475 °C/sec, 65 °C/sec to 475 °C/sec, 70 °C/sec to 475 °C/sec, 75 °C/sec to 475 °C/sec, 80 °C/sec to 475 °C/sec, 85 °C/sec to 475 °C/sec, 90 °C/sec to 475 °C/sec, 95 °C/sec to 475 °C/sec, 100 °C/sec to 475 °C/sec, 105 °C/sec to 475 °C/sec, 110 °C/sec to 475 °C/sec, 115 °C/sec to 475 °C/sec, 120 °C/sec to 475 °C/sec, 125 °C/sec to 475 °C/sec, 130 °C/sec to 475 °C/sec, 135 °C/sec to 475 °C/sec, 140 °C/sec to 475 °C/sec, 145 °C/sec to 475 °C/sec, 150 °C/sec to 475 °C/sec, 155 °C/sec to 475 °C/sec, 160 °C/sec to 475 °C/sec, 165 °C/sec to 475 °C/sec, 170 °C/sec to 475 °C/sec, 175 °C/sec to 475 °C/sec, 180 °C/sec to 475 °C/sec, 185 °C/sec to 475 °C/sec, 190 °C/sec to 475 °C/sec, 195 °C/sec to 475 °C/sec, 200 °C/sec to 475 °C/sec, 205 °C/sec to 475 °C/sec, 210 °C/sec to 475 °C/sec, 215 °C/sec to 475 °C/sec, 220 °C/sec to 475 °C/sec, 2
25°C/second to 475°C/second, 230°C/second to 475°C/second, 235°C/second to 475°C/second, 240°C/second to 475°C/second, 245°C/second to 475°C/second, 250°C/second to 475°C/second, 255°C/second to 475°C/second, 260°C/second to 475°C/second, 265°C/second to 475°C/second, 270°C/second to 475°C/second, 275°C/second to 475°C/second, 280°C/second to 475°C/second, 285°C/second to 475°C/second, 290°C/second to 475°C/second, 295°C/second to 475°C/second, 300°C/second to 475°C/second, 305°C/second to 475°C/second, 310°C/second to 475°C/second, 315°C/second to 475°C/second, 320°C/second to 475°C/second, 325°C/second to 475°C/second, 330°C/second to 475°C/second, 335°C/second to 475°C/second, 340°C/second to 475°C/second, 345°C/second to 475°C/second, 350°C/second to 475°C/second, 355°C/second to 475°C/second, 360°C/second to 475°C/second, 365°C/second to 475°C/second, 370°C/second to 475°C/second, 375°C/second to 475°C/second, 380°C/second to 475°C/second, 385°C/second to 475°C/second, 390°C/second to 475°C/second, 395°C/second to 475°C/second, 400°C/second to 475°C/second, 405°C/second to 475°C/second, 410°C/second to 475°C/second, 415°C/second to 475°C/second, 420°C/second to 475°C/second, 425°C/second to 475°C/second, 430°C/second to 475°C/second, 435°C/second to 475°C/second, 440°C/second to 475°C/second, 445°C/second to 475°C/second, 450°C/second to 475°C/second, 455°C/second to 475°C/second, 460°C/second to 475°C/second, 465°C/second to 475°C/second, 470°C/second to 475°C/second, 5°C/second to 450°C/second, 10°C/second to 450°C/second, 15°C/second to 450°C/second, 20°C/second to 450°C/second, 25°C/second to 450°C/second, 30°C/second to 450°C/second, 35°C/second to 450°C/second, 40°C/second to 450°C/second, 45°C/second to 450°C/second, 50°C/second to 450°C/second, 55°C/second to 450°C/second, 60°C/second to 450°C/second, 65°C/second to 450°C/second, 70°C/second to 450°C/second, 75°C/second to 450°C/second, 80°C/second to 450°C/second, 85°C/second to 450°C/second, 90°C/second to 450°C/second, 95°C/second to 450°C/second, 100°C/second to 450°C/second, 105°C/second to 450°C/second, 110°C/second to 450°C/second, 115°C/second to 450°C/second, 120°C/second to 450°C/second, 125°C/second to 450°C/second, 130°C/second to 450°C/second, 135°C/second to 450°C/second, 140°C/second to 450°C/second, 145°C/second to 450°C/second, 150°C/second to 450°C/second, 155°C/second to 450°C/second, 160°C/second to 450°C/second, 165°C/second to 450°C/second, 170°C/second to 450°C/second, 175°C/second to 450°C/second, 180°C/second to 450°C/second, 185°C/second to 450°C/second, 190°C/second to 450°C/second, 195°C/second to 450°C/second, 200°C/second to 450°C/second, 205°C/second to 450°C/second, 210°C/second to 450°C/second, 215°C/second to 450°C/second, 220°C/second to 450°C/second, 225°C/second to 450°C/second, 230°C/second to 450°C/second, 235°C/second to 450°C/second, 240°C/second to 450°C/second, 245°C/second to 450°C/second, 250°C/second to 450°C/second, 255°C/second to 450°C/second, 260°C/second to 450°C/second, 265°C/second to 450°C/second, 270°C/second to 450°C/second, 275°C/second to 450°C/second, 280°C/second to 450°C/second, 285°C/second to 450°C/second, 290°C/second to 450°C/second, 295°C/second to 450°C/second, 300°C/second to 450°C/second, 305°C/second to 450°C/second, 310°C/second to 450°C/second, 315°C/second to 450°C/second, 320°C/second to 450°C/second, 325°C/second to 450°C/second, 330°C/second to 450°C/second, 335°C/second to 450°C/second, 340°C/second to 450°C/second, 345°C/second to 450°C/second, 350°C/second to 450°C/second, 355°C/second to 450°C/second, 360°C/second to 450°C/second, 365°C/second to 450°C/second, 370°C/second to 450°C/second, 375°C/second to 450°C/second, 380°C/second to 450°C/second, 385°C/second to 450°C/second, 390°C/second to 450°C/second, 395°C/second to 450°C/second, 400°C/second to 450°C/second, 405°C/second to 450°C/second, 410°C/second to 450°C/second, 415°C/second to 450°C/second, 420°C/second to 450°C/second, 5°C/second to 425°C/second, 10°C/second to 425°C/second, 15°C/second to 425°C/second, 20°C/second to 425°C/second, 25°C/second to 425°C/second, 30°C/second to 425°C/second, 35°C/second to 425°C/second, 40°C/second to 425°C/second, 45°C/second to 425°C/second, 50°C/second to 425°C/second, 55°C/second to 425°C/second, 60°C/second to 425°C/second, 65°C/second to 425°C/second, 70°C/second to 425°C/second, 75°C/second to 425°C/second, 80°C/second to 425°C/second, 85°C/second to 425°C/second, 90°C/second to 425°C/second, 95°C/second to 425°C/second, 100°C/second to 425°C/second, 105°C/second to 425°C/second, 110°C/second to 425°C/second, 115°C/second to 425°C/second, 120°C/second to 425°C/second, 125°C/second to 425°C/second, 130°C/second to 425°C/second, 135°C/second to 425°C/second, 140°C/second to 425°C/second, 145°C/second to 425°C/second, 150°C/second to 425°C/second, 155°C/second to 425°C/second, 160°C/second to 425°C/second, 165°C/second to 425°C/second, 170°C/second to 425°C/second, 175°C/second to 425°C/second, 180°C/second to 425°C/second, 185°C/second to 425°C/second, 190°C/second to 425°C/second, 195°C/second to 425°C/second, 200°C/second to 425°C/second, 205°C/second to 425°C/second, 210°C/second to 425°C/second, 215°C/second to 425°C/second, 220°C/second to 425°C/second, 225°C/second to 425°C/second, 230°C/second to 425°C/second, 235°C/second to 425°C/second, 240°C/second to 425°C/second, 245°C/second to 425°C/second, 250°C/second to 425°C/second, 255°C/second to 425°C/second, 260°C/second to 425°C/second, 265°C/second to 425°C/second, 270°C/second to 425°C/second, 275°C/second to 425°C/second, 280°C/second to 425°C/second, 285°C/second to 425°C/second, 290°C/second to 425°C/second, 295°C/second to 425°C/second, 300°C/second to 425°C/second, 305°C/second to 425°C/second, 310°C/second to 425°C/second, 315°C/second to 425°C/second, 320°C/second to 425°C/second, 325°C/second to 425°C/second, 330°C/second to 425°C/second, 335°C/second to 425°C/second, 340°C/second to 425°C/second, 345°C/second to 425°C/second, 350°C/second to 425°C/second, 355°C/second to 425°C/second, 360°C/second to 425°C/second, 365°C/second to 425°C/second, 370°C/second to 425°C/second, 375°C/second to 425°C/second, 380°C/second to 425°C/second, 385°C/second to 425°C/second, 390°C/second to 425°C/second, 395°C/second to 425°C/second, 400°C/second to 425°C/second, 405°C/second to 425°C/second, 410°C/second to 425°C/second, 415°C/second to 425°C/second, 420°C/second to 425°C/second, 5°C/second to 400°C/second, 10°C/second to 400°C/second, 15°C/second to 400°C/second, 20°C/second to 400°C/second, 25°C/second to 400°C/second, 30°C/second to 400°C/second, 35°C/second to 400°C/second, 40°C/second to 400°C/second, 45°C/second to 400°C/second, 50°C/second to 400°C/second, 55°C/second to 400°C/second, 60°C/second to 400°C/second, 65°C/second to 400°C/second, 70°C/second to 400°C/second, 75°C/second to 400°C/second, 80°C/second to 400°C/second, 85°C/second to 400°C/second, 90°C/second to 400°C/second, 95°C/second to 400°C/second, 100°C/second to 400°C/second, 105°C/second to 400°C/second, 110°C/second to 400°C/second, 115°C/second to 400°C/second, 120°C/second to 400°C/second, 125°C/second to 400°C/second, 130°C/second to 400°C/second, 135°C/second to 400°C/second, 140°C/second to 400°C/second, 145°C/second to 400°C/second, 150°C/second to 400°C/second, 155°C/second to 400°C/second, 160°C/second to 400°C/second, 165°C/second to 400°C/second, 170°C/second to 400°C/second, 175°C/second to 400°C/second, 180°C/second to 400°C/second, 185°C/second to 400°C/second, 190°C/second to 400°C/second, 195°C/second to 400°C/second, 200°C/second to 400°C/second, 205°C/second to 400°C/second, 210°C/second to 400°C/second, 215°C/second to 400°C/second, 220°C/second to 400°C/second, 225°C/second to 400°C/second, 230°C/second to 400°C/second, 235°C/second to 400°C/second, 240°C/second to 400°C/second, 245°C/second to 400°C/second, 250°C/second to 400°C/second, 255°C/second to 400°C/second, 260°C/second to 400°C/second, 265°C/second to 400°C/second, 270°C/second to 400°C/second, 275°C/second to 400°C/second, 280°C/second to 400°C/second, 285°C/second to 400°C/second, 290°C/second to 400°C/second, 295°C/second to 400°C/second, 300°C/second to 400°C/second, 305°C/second to 400°C/second, 310°C/second to 400°C/second, 315°C/second to 400°C/second, 320°C/second to 400°C/second, 325°C/second to 400°C/second, 330°C/second to 400°C/second, 335°C/second to 400°C/second, 340°C/second to 400°C/second, 345°C/second to 400°C/second, 350°C/second to 400°C/second, 355°C/second to 400°C/second, 360°C/second to 400°C/second, 365°C/second to 400°C/second, 370°C/second to 400°C/second, 375°C/second to 400°C/second, 380°C/second to 400°C/second, 385°C/second to 400°C/second, 390°C/second to 400°C/second, 395°C/second to 400°C/second, 5°C/second to 375°C/second, 10°C/second to 375°C/second, 15°C/second to 375°C/second, 20°C/second to 375°C/second, 25°C/second to 375°C/second, 30°C/second to 375°C/second, 35°C/second to 375°C/second, 40°C/second to 375°C/second, 45°C/second to 375°C/second, 50°C/second to 375°C/second, 55°C/second to 375°C/second, 60°C/second to 375°C/second, 65°C/second to 375°C/second, 70°C/second to 375°C/second, 75°C/second to 375°C/second, 80°C/second to 375°C/second, 85°C/second to 375°C/second, 90°C/second to 375°C/second, 95°C/second to 375°C/second, 100°C/second to 375°C/second, 105°C/second to 375°C/second, 110°C/second to 375°C/second, 115°C/second to 375°C/second, 120°C/second to 375°C/second, 125°C/second to 375°C/second, 130°C/second to 375°C/second, 135°C/second to 375°C/second, 140°C/second to 375°C/second, 145°C/second to 375°C/second, 150°C/second to 375°C/second, 155°C/second to 375°C/second, 160°C/second to 375°C/second, 165°C/second to 375°C/second, 170°C/second to 375°C/second, 175°C/second to 375°C/second, 180°C/second to 375°C/second, 185°C/second to 375°C/second, 190°C/second to 375°C/second, 195°C/second to 375°C/second, 200°C/second to 375°C/second, 205°C/second to 375°C/second, 210°C/second to 375°C/second, 215°C/second to 375°C/second, 220°C/second to 375°C/second, 225°C/second to 375°C/second, 230°C/second to 375°C/second, 235°C/second to 375°C/second, 240°C/second to 375°C/second, 245°C/second to 375°C/second, 250°C/second to 375°C/second, 255°C/second to 375°C/second, 260°C/second to 375°C/second, 265°C/second to 375°C/second, 270°C/second to 375°C/second, 275°C/second to 375°C/second, 280°C/second to 375°C/second, 285°C/second to 375°C/second, 290°C/second to 375°C/second, 295°C/second to 375°C/second, 300°C/second to 375°C/second, 305°C/second to 375°C/second, 310°C/second to 375°C/second, 315°C/second to 375°C/second, 320°C/second to 375°C/second, 325°C/second to 375°C/second, 330°C/second to 375°C/second, 335°C/second to 375°C/second, 340°C/second to 375°C/second, 345°C/second to 375°C/second, 350°C/second to 375°C/second, 355°C/second to 375°C/second, 360°C/second to 375°C/second, 365°C/second to 375°C/second, 370℃/sec~375℃/sec, 5℃/sec~350
°C/sec, 10 °C/sec to 350 °C/sec, 15 °C/sec to 350 °C/sec, 20 °C/sec to 350 °C/sec, 25 °C/sec to 350 °C/sec, 30 °C/sec to 350 °C/sec, 35 °C/sec to 350 °C/sec, 40 °C/sec to 350 °C/sec, 45 °C/sec to 350 °C/sec, 50 °C/sec to 350 °C/sec, 55 °C/sec to 350 °C/sec, 60 °C/sec to 350 °C/sec, 65 °C/sec to 350 °C/sec, 70 °C/sec to 350 °C/sec, 75 °C/sec to 350 °C/sec, 80 °C/sec to 350 °C/sec, 85 °C/sec to 350 °C/sec, 90 °C/sec to 350 °C/sec, 95 °C/sec to 350 °C/sec, 100 °C/sec to 350 °C/sec, 105 °C/sec to 350 °C/sec, 110 °C/sec to 350 °C/sec, 115 °C/sec to 350 °C/sec, 120 °C/sec to 350 °C/sec, 125 °C/sec to 350 °C/sec, 130 °C/sec to 350 °C/sec, 135 °C/sec to 350 °C/sec, 140 °C/sec to 350 °C/sec, 145 °C/sec to 350 °C/sec, 150 °C/sec to 350 °C/sec, 155 °C/sec to 350 °C/sec, 160 °C/sec to 350 °C/sec, 165 °C/sec to 350 °C/sec, 170 °C/sec to 350 °C/sec, 175 °C/sec to 350 °C/sec, 180 °C/sec to 350 °C/sec, 185 °C/sec to 350 °C/sec, 190 °C/sec to 350 °C/sec, 195 °C/sec to 350 °C/sec, 200 °C/sec to 350 °C/sec, 205 °C/sec to 350 °C/sec, 210 °C/sec to 350 °C/sec, 215 °C/sec to 350 °C/sec, 220 °C/sec to 350 °C/sec, 225 °C/sec to 350 °C/sec, 230 °C/sec to 350 °C/sec, 235 °C/sec to 350 °C/sec, 240 °C/sec to 350 °C/sec, 245 °C/sec to 350 °C/sec, 250 °C/sec to 350 °C/sec, 255 °C/sec to 350 °C/sec, 260 °C/sec to 350 °C/sec, 265 °C/sec to 350 °C/sec, 270 °C/sec to 350 °C/sec, 275 °C/sec to 350 °C/sec, 280 °C/sec to 350 °C/sec, 285 °C/sec to 350 °C/sec, 290 °C/sec to 350 °C/sec, 295 °C/sec to 350 °C/sec, 300 °C/sec to 350 °C/sec, 305 °C/sec to 350 °C/sec, 310 °C/sec to 350 °C/sec, 315 °C/sec to 350 °C/sec, 320 °C/sec to 350 °C/sec, 325 °C/sec to 350 °C/sec, 330 °C/sec to 350 °C/sec, 335 °C/sec to 350 °C/sec, 340 °C/sec to 350 °C/sec, 345 °C/sec to 350 °C/sec, 5 °C/sec to 325 °C/sec, 10 °C/sec to 325 °C/sec, 15 °C/sec to 325 °C/sec, 20 °C/sec to 325 °C/sec, 25 °C/sec to 325 °C/sec, 30 °C/sec to 325 °C/sec, 35 °C/sec to 325 °C/sec, 40 °C/sec to 325 °C/sec, 45 °C/sec to 325 °C/sec, 50 °C/sec to 325 °C/sec, 55 °C/sec to 325 °C/sec, 60 °C/sec to 325 °C/sec, 65 °C/sec to 325 °C/sec, 70 °C/sec to 325 °C/sec, 75 °C/sec to 325 °C/sec, 80 °C/sec to 325 °C/sec, 85 °C/sec to 325 °C/sec, 90 °C/sec to 325 °C/sec, 95 °C/sec to 325 °C/sec, 100 °C/sec to 325 °C/sec, 105 °C/sec to 325 °C/sec, 110 °C/sec to 325 °C/sec, 115 °C/sec to 325 °C/sec, 120 °C/sec to 325 °C/sec, 125 °C/sec to 325 °C/sec, 130 °C/sec to 325 °C/sec, 135 °C/sec to 325 °C/sec, 140 °C/sec to 325 °C/sec, 145 °C/sec to 325 °C/sec, 150 °C/sec to 325 °C/sec, 155 °C/sec to 325 °C/sec, 160 °C/sec to 325 °C/sec, 165 °C/sec to 325 °C/sec, 170 °C/sec to 325 °C/sec, 175 °C/sec to 325 °C/sec, 180 °C/sec to 325 °C/sec, 185 °C/sec to 325 °C/sec, 190 °C/sec to 325 °C/sec, 195 °C/sec to 325 °C/sec, 200 °C/sec to 325 °C/sec, 205 °C/sec to 325 °C/sec, 210 °C/sec to 325 °C/sec, 215 °C/sec to 325 °C/sec, 220 °C/sec to 325 °C/sec, 225 °C/sec to 325 °C/sec, 230 °C/sec to 325 °C/sec, 235 °C/sec to 325 °C/sec, 240 °C/sec to 325 °C/sec, 245 °C/sec to 325 °C/sec, 250 °C/sec to 325 °C/sec, 255 °C/sec to 325 °C/sec, 260 °C/sec to 325 °C/sec, 265 °C/sec to 325 °C/sec, 270 °C/sec to 325 °C/sec, 275 °C/sec to 325 °C/sec, 280 °C/sec to 325 °C/sec, 285 °C/sec to 325 °C/sec, 290 °C/sec to 325 °C/sec, 295 °C/sec to 325 °C/sec, 300 °C/sec to 325 °C/sec, 305 °C/sec to 325 °C/sec, 310 °C/sec to 325 °C/sec, 315 °C/sec to 325 °C/sec, 320 °C/sec to 325 °C/sec, 5 °C/sec to 300 °C/sec, 10 °C/sec to 300 °C/sec, 15 °C/sec to 300 °C/sec, 20 °C/sec to 300 °C/sec, 25 °C/sec to 300 °C/sec, 30 °C/sec to 300 °C/sec, 35 °C/sec to 300 °C/sec, 40 °C/sec to 300 °C/sec, 45 °C/sec to 300 °C/sec, 50 °C/sec to 300 °C/sec, 55 °C/sec to 300 °C/sec, 60 °C/sec to 300 °C/sec, 65 °C/sec to 300 °C/sec, 70 °C/sec to 300 °C/sec, 75 °C/sec to 300 °C/sec, 80 °C/sec to 300 °C/sec, 85 °C/sec to 300 °C/sec, 90 °C/sec to 300 °C/sec, 95 °C/sec to 300 °C/sec, 100 °C/sec to 300 °C/sec, 105 °C/sec to 300 °C/sec, 110 °C/sec to 300 °C/sec, 115 °C/sec to 300 °C/sec, 120 °C/sec to 300 °C/sec, 125 °C/sec to 300 °C/sec, 130 °C/sec to 300 °C/sec, 135 °C/sec to 300 °C/sec, 140 °C/sec to 300 °C/sec, 145 °C/sec to 300 °C/sec, 150 °C/sec to 300 °C/sec, 155 °C/sec to 300 °C/sec, 160 °C/sec to 300 °C/sec, 165 °C/sec to 300 °C/sec, 170 °C/sec to 300 °C/sec, 175 °C/sec to 300 °C/sec, 180 °C/sec to 300 °C/sec, 185 °C/sec to 300 °C/sec, 190 °C/sec to 300 °C/sec, 195 °C/sec to 300 °C/sec, 200 °C/sec to 300 °C/sec, 205 °C/sec to 300 °C/sec, 210 °C/sec to 300 °C/sec, 215 °C/sec to 300 °C/sec, 220 °C/sec to 300 °C/sec, 225 °C/sec to 300 °C/sec, 230 °C/sec to 300 °C/sec, 235 °C/sec to 300 °C/sec, 240 °C/sec to 300 °C/sec, 245 °C/sec to 300 °C/sec, 250 °C/sec to 300 °C/sec, 255 °C/sec to 300 °C/sec, 260 °C/sec to 300 °C/sec, 265 °C/sec to 300 °C/sec, 270 °C/sec to 300 °C/sec, 275 °C/sec to 300 °C/sec, 280 °C/sec to 300 °C/sec, 285 °C/sec to 300 °C/sec, 290 °C/sec to 300 °C/sec, 295 °C/sec to 300 °C/sec, 5 °C/sec to 275 °C/sec, 10 °C/sec to 275 °C/sec, 15 °C/sec to 275 °C/sec, 20 °C/sec to 275 °C/sec, 25 °C/sec to 275 °C/sec, 30 °C/sec to 275 °C/sec, 35 °C/sec to 275 °C/sec, 40 °C/sec to 275 °C/sec, 45 °C/sec to 275 °C/sec, 50 °C/sec to 275 °C/sec, 55 °C/sec to 275 °C/sec, 60 °C/sec to 275 °C/sec, 65 °C/sec to 275 °C/sec, 70 °C/sec to 275 °C/sec, 75 °C/sec to 275 °C/sec, 80 °C/sec to 275 °C/sec, 85 °C/sec to 275 °C/sec, 90 °C/sec to 275 °C/sec, 95 °C/sec to 275 °C/sec, 100 °C/sec to 275 °C/sec, 105 °C/sec to 275 °C/sec, 110 °C/sec to 275 °C/sec, 115 °C/sec to 275 °C/sec, 120 °C/sec to 275 °C/sec, 125 °C/sec to 275 °C/sec, 130 °C/sec to 275 °C/sec, 135 °C/sec to 275 °C/sec, 140 °C/sec to 275 °C/sec, 145 °C/sec to 275 °C/sec, 150 °C/sec to 275 °C/sec, 155 °C/sec to 275 °C/sec, 160 °C/sec to 275 °C/sec, 165 °C/sec to 275 °C/sec, 170 °C/sec to 275 °C/sec, 175 °C/sec to 275 °C/sec, 180 °C/sec to 275 °C/sec, 185 °C/sec to 275 °C/sec, 190 °C/sec to 275 °C/sec, 195 °C/sec to 275 °C/sec, 200 °C/sec to 275 °C/sec, 205 °C/sec to 275 °C/sec, 210 °C/sec to 275 °C/sec, 215 °C/sec to 275 °C/sec, 220 °C/sec to 275 °C/sec, 225 °C/sec to 275 °C/sec, 230 °C/sec to 275 °C/sec, 235 °C/sec to 275 °C/sec, 240 °C/sec to 275 °C/sec, 245 °C/sec to 275 °C/sec, 250 °C/sec to 275 °C/sec, 255 °C/sec to 275 °C/sec, 260 °C/sec to 275 °C/sec, 265 °C/sec to 275 °C/sec, 270 °C/sec to 275 °C/sec, 5 °C/sec to 250 °C/sec, 10 °C/sec to 250 °C/sec, 15 °C/sec to 250 °C/sec, 20 °C/sec to 250 °C/sec, 25 °C/sec to 250 °C/sec, 30 °C/sec to 250 °C/sec, 35 °C/sec to 250 °C/sec, 40 °C/sec to 250 °C/sec, 45 °C/sec to 250 °C/sec, 50 °C/sec to 250 °C/sec, 55 °C/sec to 250 °C/sec, 60 °C/sec to 250 °C/sec, 65 °C/sec to 250 °C/sec, 70 °C/sec to 250 °C/sec, 75 °C/sec to 250 °C/sec, 80 °C/sec to 250 °C/sec, 85 °C/sec to 250 °C/sec, 90 °C/sec to 250 °C/sec, 95 °C/sec to 250 °C/sec, 100 °C/sec to 250 °C/sec, 105 °C/sec to 250 °C/sec, 110 °C/sec to 250 °C/sec, 115 °C/sec to 250 °C/sec, 120 °C/sec to 250 °C/sec, 125 °C/sec to 250 °C/sec, 130 °C/sec to 250 °C/sec, 135 °C/sec to 250 °C/sec, 140 °C/sec to 250 °C/sec, 145 °C/sec to 250 °C/sec, 150 °C/sec to 250 °C/sec, 155 °C/sec to 250 °C/sec, 160 °C/sec to 250 °C/sec, 165 °C/sec to 250 °C/sec, 170 °C/sec to 250 °C/sec, 175 °C/sec to 250 °C/sec, 180 °C/sec to 250 °C/sec, 185 °C/sec to 250 °C/sec, 190 °C/sec to 250 °C/sec, 195 °C/sec to 250 °C/sec, 200 °C/sec to 250 °C/sec, 205 °C/sec to 250 °C/sec, 210 °C/sec to 250 °C/sec, 215 °C/sec to 250 °C/sec, 220 °C/sec to 250 °C/sec, 225 °C/sec to 250 °C/sec, 230 °C/sec to 250 °C/sec, 235 °C/sec to 250 °C/sec, 240 °C/sec to 250 °C/sec, 245 °C/sec to 250 °C/sec, 5 °C/sec to 225 °C/sec, 10 °C/sec to 225 °C/sec, 15 °C/sec to 225 °C/sec, 20 °C/sec to 225 °C/sec, 25 °C/sec to 225 °C/sec, 30 °C/sec to 225 °C/sec, 35 °C/sec to 225 °C/sec, 40 °C/sec to 225 °C/sec, 45 °C/sec to 225 °C/sec, 50 °C/sec to 225 °C/sec, 55 °C/sec to 225 °C/sec, 60 °C/sec to 225 °C/sec, 65 °C/sec to 225 °C/sec, 70 °C/sec to 225 °C/sec, 75 °C/sec to 225 °C/sec, 80 °C/sec to 225 °C/sec, 85 °C/sec to 225 °C/sec, 90 °C/sec to 225 °C/sec, 95 °C/sec to 225 °C/sec, 100 °C/sec to 225 °C/sec, 105 °C/sec to 225 °C/sec, 110 °C/sec to 225 °C/sec, 115 °C/sec to 225 °C/sec, 120 °C/sec to 225 °C/sec, 125 °C/sec to 225 °C/sec, 130 °C/sec to 225 °C/sec, 135 °C/sec to 225 °C/sec, 140 °C/sec to 225 °C/sec, 145 °C/sec to 225 °C/sec, 150 °C/sec to 225 °C/sec, 155 °C/sec to 225 °C/sec, 160 °C/sec to 225 °C/sec, 165 °C/sec to 225 °C/sec, 170 °C/sec to 225 °C/sec, 175 °C/sec to 225 °C/sec, 180 °C/sec to 225 °C/sec, 185 °C/sec to 225 °C/sec, 190 °C/sec to 225 °C/sec, 195 °C/sec to 225 °C/sec, 200 °C/sec to 225 °C/sec, 205 °C/sec to 225 °C/sec, 210 °C/sec to 225 °C/sec, 215 °C/sec to 225 °C/sec, 220 °C/sec to 225 °C/sec, 5 °C/sec to 200 °C/sec, 10 °C/sec to 200 °C/sec, 15 °C/sec to 200 °C/sec, 20 °C/sec to 200 °C/sec, 25 °C/sec to 200 °C/sec, 30 °C/sec to 200 °C/sec, 35 °C/sec to 200 °C/sec, 40 °C/sec to 200 °C/sec, 45 °C/sec to 200 °C/sec, 50 °C/sec to 200 °C/sec, 55 °C/sec to 200 °C/sec, 60 °C/sec to 200 °C/sec, 65 °C/sec to 200 °C/sec, 70 °C/sec to 200 °C/sec, 75 °C/sec to 200 °C/sec, 80 °C/sec to 200 °C/sec, 85 °C/sec to 200 °C/sec, 90 °C/sec to 200 °C/sec, 95 °C/sec to 200 °C/sec, 100 °C/sec to 200 °C/sec, 105 °C/sec to 200 °C/sec, 110 °C/sec to 200 °C/sec, 115 °C/sec to 200 °C/sec, 120 °C/sec to 200 °C/sec, 125 °C/sec to 200 °C/sec, 130 °C/sec to 200 °C/sec, 135 °C/sec to 200 °C/sec, 140 °C/sec to 200 °C/sec, 145 °C/sec to 200 °C/sec, 150 °C/sec to 200 °C/sec, 155 °C/sec to 200 °C/sec, 160 °C/sec to 200 °C/sec, 165 °C/sec to 200 °C/sec, 170 °C/sec to 200 °C/sec, 175 °C/sec to 200 °C/sec, 180 °C/sec to 200 °C/sec, 185 °C/sec to 200 °C/sec, 190 °C/
seconds to 200℃/second, 195℃/second to 200℃/second, 5℃/second to 175℃/second, 10℃/second to 175℃/second, 15℃/second to 175℃/second, 20℃/second seconds to 175℃/second, 25℃/second to 175℃/second, 30℃/second to 175℃/second, 35℃/second to 175℃/second, 40℃/second to 175℃/second, 45℃/second seconds to 175℃/second, 50℃/second to 175℃/second, 55℃/second to 175℃/second, 60℃/second to 175℃/second, 65℃/second to 175℃/second, 70℃/second seconds to 175℃/second, 75℃/second to 175℃/second, 80℃/second to 175℃/second, 85℃/second to 175℃/second, 90℃/second to 175℃/second, 95℃/second seconds to 175℃/second, 100℃/second to 175℃/second, 105℃/second to 175℃/second, 110℃/second to 175℃/second, 115℃/second to 175℃/second, 120℃/second seconds to 175℃/second, 125℃/second to 175℃/second, 130℃/second to 175℃/second, 135℃/second to 175℃/second, 140℃/second to 175℃/second, 145℃/second seconds to 175℃/second, 150℃/second to 175℃/second, 155℃/second to 175℃/second, 160℃/second to 175℃/second, 165℃/second to 175℃/second, 170℃/second seconds to 175℃/second, 5℃/second to 150℃/second, 10℃/second to 150℃/second, 15℃/second to 150℃/second, 20℃/second to 150℃/second, 25℃/second seconds to 150℃/second, 30℃/second to 150℃/second, 35℃/second to 150℃/second, 40℃/second to 150℃/second, 45℃/second to 150℃/second, 50℃/second seconds to 150℃/second, 55℃/second to 150℃/second, 60℃/second to 150℃/second, 65℃/second to 150℃/second, 70℃/second to 150℃/second, 75℃/second seconds to 150℃/second, 80℃/second to 150℃/second, 85℃/second to 150℃/second, 90℃/second to 150℃/second, 95℃/second to 150℃/second, 100℃/second seconds to 150℃/second, 105℃/second to 150℃/second, 110℃/second to 150℃/second, 115℃/second to 150℃/second, 120℃/second to 150℃/second, 125℃/second seconds to 150℃/second, 130℃/second to 150℃/second, 135℃/second to 150℃/second, 140℃/second to 150℃/second, 145℃/second to 150℃/second, 5℃/second seconds to 125℃/second, 10℃/second to 125℃/second, 15℃/second to 125℃/second, 20℃/second to 125℃/second, 25℃/second to 125℃/second, 30℃/second seconds to 125℃/second, 35℃/second to 125℃/second, 40℃/second to 125℃/second, 45℃/second to 125℃/second, 50℃/second to 125℃/second, 55℃/second seconds to 125℃/second, 60℃/second to 125℃/second, 65℃/second to 125℃/second, 70℃/second to 125℃/second, 75℃/second to 125℃/second, 80℃/second seconds to 125℃/second, 85℃/second to 125℃/second, 90℃/second to 125℃/second, 95℃/second to 125℃/second, 100℃/second to 125℃/second, 105℃/second seconds to 125℃/second, 110℃/second to 125℃/second, 115℃/second to 125℃/second, 120℃/second to 125℃/second, 5℃/second to 120℃/second, 10℃/second seconds to 120℃/second, 15℃/second to 120℃/second, 20℃/second to 120℃/second, 25℃/second to 120℃/second, 30℃/second to 120℃/second, 35℃/second seconds to 120℃/second, 40℃/second to 120℃/second, 45℃/second to 120℃/second, 50℃/second to 120℃/second, 55℃/second to 120℃/second, 60℃/second seconds to 120℃/second, 65℃/second to 120℃/second, 70℃/second to 120℃/second, 75℃/second to 120℃/second, 80℃/second to 120℃/second, 85℃/second seconds to 120℃/second, 90℃/second to 120℃/second, 95℃/second to 120℃/second, 100℃/second to 120℃/second, 105℃/second to 120℃/second, 110℃/second seconds to 120℃/second, 115℃/second to 120℃/second, 5℃/second to 115℃/second, 10℃/second to 115℃/second, 15℃/second to 115℃/second, 20℃/second seconds to 115℃/second, 25℃/second to 115℃/second, 30℃/second to 115℃/second, 35℃/second to 115℃/second, 40℃/second to 115℃/second, 45℃/second seconds to 115℃/second, 50℃/second to 115℃/second, 55℃/second to 115℃/second, 60℃/second to 115℃/second, 65℃/second to 115℃/second, 70℃/second seconds to 115℃/second, 75℃/second to 115℃/second, 80℃/second to 115℃/second, 85℃/second to 115℃/second, 90℃/second to 115℃/second, 95℃/second seconds to 115℃/second, 100℃/second to 115℃/second, 105℃/second to 115℃/second, 110℃/second to 115℃/second, 5℃/second to 110℃/second, 10℃/second seconds to 110℃/second, 15℃/second to 110℃/second, 20℃/second to 110℃/second, 25℃/second to 110℃/second, 30℃/second to 110℃/second, 35℃/second seconds to 110℃/second, 40℃/second to 110℃/second, 45℃/second to 110℃/second, 50℃/second to 110℃/second, 55℃/second to 110℃/second, 60℃/second seconds to 110℃/second, 65℃/second to 110℃/second, 70℃/second to 110℃/second, 75℃/second to 110℃/second, 80℃/second to 110℃/second, 85℃/second seconds to 110℃/second, 90℃/second to 110℃/second, 95℃/second to 110℃/second, 100℃/second to 110℃/second, 105℃/second to 110℃/second, 5℃/second seconds to 105℃/second, 10℃/second to 105℃/second, 15℃/second to 105℃/second, 20℃/second to 105℃/second, 25℃/second to 105℃/second, 30℃/second seconds to 105℃/second, 35℃/second to 105℃/second, 40℃/second to 105℃/second, 45℃/second to 105℃/second, 50℃/second to 105℃/second, 55℃/second seconds to 105℃/second, 60℃/second to 105℃/second, 65℃/second to 105℃/second, 70℃/second to 105℃/second, 75℃/second to 105℃/second, 80℃/second seconds to 105℃/second, 85℃/second to 105℃/second, 90℃/second to 105℃/second, 95℃/second to 105℃/second, 100℃/second to 105℃/second, 5℃/second seconds to 100℃/second, 10℃/second to 100℃/second, 15℃/second to 100℃/second, 20℃/second to 100℃/second, 25℃/second to 100℃/second, 30℃/second seconds to 100℃/second, 35℃/second to 100℃/second, 40℃/second to 100℃/second, 45℃/second to 100℃/second, 50℃/second to 100℃/second, 55℃/second seconds to 100℃/second, 60℃/second to 100℃/second, 65℃/second to 100℃/second, 70℃/second to 100℃/second, 75℃/second to 100℃/second, 80℃/second seconds to 100℃/second, 85℃/second to 100℃/second, 90℃/second to 100℃/second, 95℃/second to 100℃/second, 5℃/second to 105℃/second, 10℃/second seconds to 105℃/second, 15℃/second to 105℃/second, 20℃/second to 105℃/second, 25℃/second to 105℃/second, 30℃/second to 105℃/second, 35℃/second seconds to 105℃/second, 40℃/second to 105℃/second, 45℃/second to 105℃/second, 50℃/second to 105℃/second, 55℃/second to 105℃/second, 60℃/second seconds to 105℃/second, 65℃/second to 105℃/second, 70℃/second to 105℃/second, 75℃/second to 105℃/second, 80℃/second to 105℃/second, 85℃/second seconds to 105℃/second, 90℃/second to 105℃/second, 95℃/second to 105℃/second, 100℃/second to 105℃/second, 5℃/second to 95℃/second, 10℃/second seconds to 95℃/second, 15℃/second to 95℃/second, 20℃/second to 95℃/second, 25℃/second to 95℃/second, 30℃/second to 95℃/second, 35℃/second seconds to 95℃/second, 40℃/second to 95℃/second, 45℃/second to 95℃/second, 50℃/second to 95℃/second, 55℃/second to 95℃/second, 60℃/second seconds to 95℃/second, 65℃/second to 95℃/second, 70℃/second to 95℃/second, 75℃/second to 95℃/second, 80℃/second to 95℃/second, 85℃/second seconds to 95℃/second, 90℃/second to 95℃/second, 5℃/second to 90℃/second, 10℃/second to 90℃/second, 15℃/second to 90℃/second, 20℃/second seconds to 90℃/second, 25℃/second to 90℃/second, 30℃/second to 90℃/second, 35℃/second to 90℃/second, 40℃/second to 90℃/second, 45℃/second seconds to 90℃/second, 50℃/second to 90℃/second, 55℃/second to 90℃/second, 60℃/second to 90℃/second, 65℃/second to 90℃/second, 70℃/second seconds to 90℃/second, 75℃/second to 90℃/second, 80℃/second to 90℃/second, 85℃/second to 90℃/second, 5℃/second to 85℃/second, 10℃/second seconds to 85℃/second, 15℃/second to 85℃/second, 20℃/second to 85℃/second, 25℃/second to 85℃/second, 30℃/second to 85℃/second, 35℃/second seconds to 85℃/second, 40℃/second to 85℃/second, 45℃/second to 85℃/second, 50℃/second to 85℃/second, 55℃/second to 85℃/second, 60℃/second seconds to 85℃/second, 65℃/second to 85℃/second, 70℃/second to 85℃/second, 75℃/second to 85℃/second, 80℃/second to 85℃/second, 5℃/second seconds to 80℃/second, 10℃/second to 80℃/second, 15℃/second to 80℃/second, 20℃/second to 80℃/second, 25℃/second to 80℃/second, 30℃/second seconds to 80℃/second, 35℃/second to 80℃/second, 40℃/second to 80℃/second, 45℃/second to 80℃/second, 50℃/second to 80℃/second, 55℃/second seconds to 80℃/second, 60℃/second to 80℃/second, 65℃/second to 80℃/second, 70℃/second to 80℃/second, 75℃/second to 80℃/second, 5℃/second seconds to 75℃/second, 10℃/second to 75℃/second, 15℃/second to 75℃/second, 20℃/second to 75℃/second, 25℃/second to 75℃/second, 30℃/second seconds to 75℃/second, 35℃/second to 75℃/second, 40℃/second to 75℃/second, 45℃/second to 75℃/second, 50℃/second to 75℃/second, 55℃/second seconds to 75℃/second, 60℃/second to 75℃/second, 65℃/second to 75℃/second, 70℃/second to 75℃/second, 5℃/second to 70℃/second, 10℃/second seconds to 70℃/second, 15℃/second to 70℃/second, 20℃/second to 70℃/second, 25℃/second to 70℃/second, 30℃/second to 70℃/second, 35℃/second seconds to 70℃/second, 40℃/second to 70℃/second, 45℃/second to 70℃/second, 50℃/second to 70℃/second, 55℃/second to 70℃/second, 60℃/second seconds to 70℃/second, 65℃/second to 70℃/second, 5℃/second to 65℃/second, 10℃/second to 65℃/second, 15℃/second to 65℃/second, 20℃/second seconds to 65℃/second, 25℃/second to 65℃/second, 30℃/second to 65℃/second, 35℃/second to 65℃/second, 40℃/second to 65℃/second, 45℃/second seconds to 65℃/second, 50℃/second to 65℃/second, 55℃/second to 65℃/second, 60℃/second to 65℃/second, 5℃/second to 60℃/second, 10℃/second seconds to 60℃/second, 15℃/second to 60℃/second, 20℃/second to 60℃/second, 25℃/second to 60℃/second, 30℃/second to 60℃/second, 35℃/second seconds to 60℃/second, 40℃/second to 60℃/second, 45℃/second to 60℃/second, 50℃/second to 60℃/second, 55℃/second to 60℃/second, 5℃/second seconds to 55℃/second, 10℃/second to 55℃/second, 15℃/second to 55℃/second, 20℃/second to 55℃/second, 25℃/second to 55℃/second, 30℃/second seconds to 55℃/second, 35℃/second to 55℃/second, 40℃/second to 55℃/second, 45℃/second to 55℃/second, 50℃/second to 55℃/second, 5℃/second seconds to 50℃/second, 10℃/second to 50℃/second, 15℃/second to 50℃/second, 20℃/second to 50℃/second, 25℃/second to 50℃/second, 30℃/second seconds to 50℃/second, 35℃/second to 50℃/second, 40℃/second to 50℃/second, 45℃/second to 50℃/second, 5℃/second to 45℃/second, 10℃/second seconds to 45℃/second, 15℃/second to 45℃/second, 20℃/second to 45℃/second, 25℃/second to 45℃/second, 30℃/second to 45℃/second, 35℃/second seconds to 45℃/second, 40℃/second to 45℃/second, 5℃/second to 40℃/second, 10℃/second to 40℃/second, 15℃/second to 40℃/second, 20℃/second seconds to 40℃/second, 25℃/second to 40℃/second, 30℃/second to 40℃/second, 35℃/second to 40℃/second, 5℃/second to 35℃/second, 10℃/second seconds to 35℃/second, 15℃/second to 35℃/second, 20℃/second to 35℃/second, 25℃/second to 35℃/second, 30℃/second to 35℃/second, 5℃/second seconds to 30℃/second, 10℃/second to 30℃/second, 15℃/second to 30℃/second, 20℃/second to 30℃/second, 25℃/second to 30℃/second, 5℃/second seconds to 25℃/second, 10℃/second to 25℃/second, 15℃/second to 25℃/second, 20℃/second to 25℃/second, 5℃/second to 20℃/second, 10℃/second seconds to 20°C/second, 15°C/second to 20°C/second, 5°C/second to 15°C/second, 10°C/second to 15°C/second, or 5°C/second to 10°C/second.

FIG. 12 shows an overview of a method 1200 of manufacturing a quench-insensitive aluminum alloy product. At block 1205, the aluminum alloy product is subjected to one or more rolling or forming processes. The one or more rolling or forming processes can include a hot rolling process at block 1207, a cold rolling process at block 1209, or both. In some cases, heat treated aluminum alloy products can be cold rolled to final gauge thickness. The final gauge thickness can be between 0.2 mm and 10.0 mm (eg, 2.0 mm). For example, heat treated aluminum alloy products are available in 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1. 2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3.0mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, 3.5mm, 3.6mm, 3. 7mm, 3.8mm, 3.9mm, 4.0mm, 4.1mm, 4.2mm, 4.3mm, 4.4mm, 4.5mm, 4.6mm, 4.7mm, 4.8mm, 4.9mm, 5.0mm, 5.1mm, 5.2mm, 5.3mm, 5.4mm, 5.5mm, 5.6mm, 5.7mm, 5.8mm, 5.9mm, 6.0mm, 6.1mm, 6. 2mm, 6.3mm, 6.4mm, 6.5mm, 6.6mm, 6.7mm, 6.8mm, 6.9mm, 7.0mm, 7.1mm, 7.2mm, 7.3mm, 7.4mm, 7.5mm, 7.6mm, 7.7mm, 7.8mm, 7.9mm, 8.0mm, 8.1mm, 8.2mm, 8.3mm, 8.4mm, 8.5mm, 8.6mm, 8. 7mm, 8.8mm, 8.9mm, 9.0mm, 9.1mm, 9.2mm, 9.3mm, 9.4mm, 9.5mm, 9.6mm, 9.7mm, 9.8mm, 9.9mm, Or it can be cold rolled to a final gauge thickness of 10.0 mm. Cold rolling can result in a heat treated aluminum alloy product having a final gauge thickness representing an overall gauge reduction of 20%, 50%, 75%, or 85%.

At block 1210, the rolled aluminum alloy product may be heated. The rolled aluminum alloy product may be a quench-insensitive aluminum alloy product. In embodiments, rolled aluminum alloy products can include aluminum alloys having elemental compositions based on those shown in Tables 1-6. Optionally, the rolled aluminum alloy product can include a 7XXX series aluminum alloy. In embodiments, the rolled aluminum alloy product may be a slab, strip, plate, shate, or sheet. Optionally, ingots and/or billets can also be used in method 1200.

At block 1210, the rolled aluminum alloy product may be heated to a first temperature. Rolled aluminum alloy products can be heated in a heat treatment process. In some embodiments, the heat treatment process can be a solution heat treatment process. During heating, the rolled aluminum alloy product can be heated to a first temperature of at least 400°C (eg, at least 425°C, at least 450°C, at least 460°C, or at least 465°C). In some cases, the first temperature ranges from 400°C to 525°C, 425°C to 510°C, 450°C to 510°C, 450°C to 500°C, 450°C to 480°C, or 450°C to 475°C. be able to. In some embodiments, the first temperature can be a solution temperature.

When heating the rolled aluminum alloy product, the heating rate to the first temperature can be 70°C/hour or less, 60°C/hour or less, or 50°C/hour or less. The rolled aluminum alloy product can then be soaked (ie, held at a specified temperature) for a predetermined period of time. In some cases, rolled aluminum alloy products can be soaked for up to 15 hours (eg, 30 minutes to 15 hours). For example, rolled aluminum alloy products can be heated at a first temperature of at least 400°C for 30 minutes, 1 hour, 2 hours, 3 hours, 4 hours, 5 hours, 6 hours, 7 hours, 8 hours, 9 hours, 10 hours. , 11 hours, 12 hours, 13 hours, 14 hours, or 15 hours.

In embodiments, the heat treatment process can be or include a heat sensitive rolling process. The hot rolling process can include hot reversible milling and/or hot tandem milling. The hot rolling process can be performed at a temperature ranging from about 250°C to about 550°C (eg, about 300°C to about 500°C, or about 350°C to about 450°C). In the hot rolling process, rolled aluminum alloy products can be hot rolled to a gauge thickness of 12 mm or less (eg, a gauge thickness of 3 mm to 8 mm). For example, rolled aluminum alloy products have a gauge thickness of 11 mm or less, a gauge thickness of 10 mm or less, a gauge thickness of 9 mm or less, a gauge thickness of 8 mm or less, a gauge thickness of 7 mm or less, a gauge thickness of 6 mm or less, a gauge thickness of 5 mm or less, a gauge thickness of 4 mm or less, or It can be hot rolled to a thickness of 3 mm or less. In some embodiments, hot rolling processes can occur at different points in method 1200. For example, a hot rolling process can be performed after forming or after a quenching step.

The rolled aluminum alloy product may be maintained at the first temperature or within 10° C. of the first temperature at block 1220 for a duration of 30 seconds to 12 hours. In some cases, the duration is 15 seconds to 6 hours, 15 seconds to 3 hours, 15 seconds to 1 hour, 15 seconds to 30 minutes, 15 seconds to 5 minutes, 15 seconds to 1 hour, 15 seconds to 30 seconds, 30 seconds to 6 hours, 30 seconds to 3 hours, 30 seconds to 1 hour, 30 seconds to 30 minutes, 30 seconds to 5 minutes, 30 seconds to 1 minute, 1 minute to 6 hours, 1 minute to 3 hours, 1 minute ~1 hour, 1 minute to 30 minutes, 5 minutes to 1 hour, 5 minutes to 30 minutes, 30 minutes to 12 hours, 30 minutes to 6 hours, or 30 minutes to 1 hour. In some cases, the rolled aluminum alloy product may be heated within 50°C of the first temperature, within 40°C of the first temperature, within 30°C of the first temperature, within 25°C of the first temperature, or within 25°C of the first temperature. It can be maintained within 20°C, within 15°C of the first temperature, within 5°C of the first temperature, and within 1°C of the first temperature.

Optionally, at the end of the heat treatment process, the rolled aluminum alloy product can be subjected to one or more forming processes at block 1230. For example, at block 1230, a rolled aluminum alloy product may be subjected to a hot rolling process. In some embodiments, the rolled aluminum alloy product may be hot formed after heating but before the rolled aluminum alloy product is quenched. The rolled aluminum alloy products provided herein can have good ductility or formability at high temperatures. This makes the rolled aluminum alloy product malleable and provides better formability. Hot forming the rolled aluminum alloy product while the product is at or near the first temperature allows the rolled aluminum alloy product to be formed into a variety of complex shapes. For example, after heating a rolled aluminum alloy product, the product can be transferred to a press or mold where it is formed into the desired shape.

At block 1240, the rolled (and optionally formed) aluminum alloy product may be quenched. At block 1240, the rolled aluminum alloy product may be quenched to a second temperature of about 10° C. to about 100° C. in a quenching process to produce a heat treated aluminum alloy product. In some embodiments, the second temperature can be ambient or room temperature. The quenching process can be performed using a rapid quenching method or a slow quenching method. The quenching rate in rapid quenching methods can range from about 2000° C. per second to about 3000° C. per second (eg, about 2500° C. per second) or more. The quenching rate in slow quenching methods can range from about 5° C. per second to about 600° C. per second (e.g., from about 5° C. per second to about 550° C. per second, or from about 50° C. per second to about 350° C. per second). In some cases, the quenching rate can range from about 5° C. per second to about 125° C. per second.

In some embodiments, hardening the rolled aluminum alloy product at block 1240 may include more than one hardening process. The rolled aluminum alloy product may be subjected to a first quench to an intermediate temperature, followed by a second quench until the rolled aluminum alloy product reaches a second temperature. For example, a rolled aluminum alloy product can be hardened from a first temperature to an intermediate temperature via a hot forming process. The intermediate temperature can be higher than the second temperature. Therefore, a second quench may be required to quench the rolled aluminum alloy product to a second temperature. The second quenching rate may be greater than the first quenching rate.

Heat-treated aluminum alloy products produced by such a quenching process can exhibit better mechanical properties than conventional aluminum alloy products. Specifically, the heat treated aluminum alloy products described herein can exhibit strain ratios of 0.3 to 0.8. Strain ratio can be measured according to ASTM G129, ASTM G129, and/or other standard test methods. Other exemplary mechanical properties exhibited by heat treated aluminum alloy products include ultimate tensile strength of 500 MPa to 650 MPa, yield strength of 400 MPa to 600 MPa, uniform elongation of 7.50% to 10.50%, and 10. A total elongation rate of 0.00% to 15.00% can be mentioned. The heat treated aluminum alloy produced in block 1240 may be aluminum alloy product 210, 310, or aluminum alloy product 4A and 4B described with reference to FIG. 4, or aluminum alloy product 5A described with reference to FIGS. 5-11C. and 5B. In some cases, the heat treated aluminum alloy product may be a hot formed aluminum alloy product where the rolled aluminum alloy product is subjected to a hot forming process. In other cases, the heat treated aluminum alloy product may be a formed aluminum alloy product where the rolled aluminum alloy product is subjected to one or more forming processes.

At block 1242, quenching the rolled aluminum alloy product may include subjecting the rolled aluminum alloy product to a water quenching process. Water quenching processes can include cold water immersion, hot water immersion, boiling water, or water spraying. In various embodiments, hardening the rolled aluminum alloy product at block 1240 can include other hardening methods. For example, block 1240 can include a forced air quenching process. Forced air hardening processes can include air blasting or still air methods. Other quenching methods that can be used at block 1240 can include polyalkylene glycol solutions, liquid nitrogen, high speed quench oil, or brine solutions.

In some cases, blocks 1230 and 1240 can be combined. For example, in some cases, rolled aluminum alloy products can be hardened by a mold hardening process. During the hot forming process, rolled aluminum alloy products can be formed into parts using cold molds. Because the cold mold has a lower temperature than the heated rolled aluminum alloy product, the cold mold can perform rapid hardening on the rolled aluminum alloy product. In some cases, the hot forming process can also be considered part of the quenching process. In other cases, rolled aluminum alloy products may undergo a hot forming process before or after the quenching process. In further cases, the hot forming process can be performed between the first and second quenching processes.

After the rolled aluminum alloy product is hardened at block 1240, the heat treated aluminum alloy product may be subjected to an aging process at block 1250. For example, a heat treated aluminum alloy product can be subjected to a hardening process such as a T6 or T7 temper. In some embodiments, the aging process at block 1250 includes reheating the heat-treated aluminum alloy product to a temperature of about 100°C to about 170°C and heating the heat-treated aluminum alloy product to a temperature of about 100°C to about 150°C. It may include maintaining the sheet for a certain period of time and cooling the sheet to near or to room temperature. In other cases, the aging process includes reheating the heat-treated aluminum alloy product to a temperature of about 100°C to about 150°C and maintaining the heat-treated aluminum alloy product at a temperature of about 100°C to about 150°C for a period of time. heating the heat-treated aluminum alloy product to a temperature higher than about 150°C; and maintaining the heat-treated aluminum alloy product at a temperature higher than about 150°C (e.g., about 150°C to about 170°C) for a certain period of time. and cooling the heat treated aluminum alloy product to room temperature. Heat treated aluminum alloy products can be heated for 10 minutes, 20 minutes, 30 minutes, 40 minutes, 50 minutes, 60 minutes, 70 minutes, 80 minutes, 90 minutes, 100 minutes, 110 minutes, 2 hours, 6 hours, 12 hours, 18 hours. , 24 hours, 30 hours, 32 hours, or more than 48 hours. For example, heat treated aluminum alloy products can be subjected to an aging process in which the product is reheated to a temperature of 100° C. to 170° C. and maintained at that temperature for 12 hours to 30 hours.

In some cases, heat-treated aluminum alloy products may be subjected to paint-bake heat treatment, such as heat-treated aluminum alloy products at temperatures above about 150°C (e.g., 160°C, 170°C, 180°C, 190°C, 200°C, or higher). heating the heat-treated aluminum alloy product to a temperature greater than about 140°C (e.g., between about 150°C, 160°C, 170°C, 180°C, 190°C, 200°C, or more) for a period of time ( For example, 10 minutes, 20 minutes, 30 minutes, 40 minutes, 50 minutes, 60 minutes, 70 minutes, 80 minutes, 90 minutes, 100 minutes, 110 minutes, or 120 minutes).

Referring now to FIG. 13, a graph 1300 illustrates a temperature profile of an aluminum alloy product as a function of time, according to an embodiment of the present disclosure. Graph 1300 may illustrate or correspond to one embodiment of a method of manufacturing a quench-insensitive aluminum alloy product. For example, graph 1300 may correspond to a method of manufacturing aluminum alloy product 210, 310, 4A, 4B, 5A, 5B, or any aluminum alloy product having a composition based on Tables 1-6. Starting at step 1310, the rolled aluminum alloy product may be heated to a first temperature from room temperature to 480° C. in a heat treatment process. As shown, heating can take about 50 seconds. In embodiments, room temperature may correspond to ambient conditions, such as about 40°C. In this embodiment, the heat treatment process may be a solution heat treatment process, designated by the notation SHT. At step 1320, the rolled aluminum alloy product can be held at the first temperature for a period of time, such as about 5 minutes. After this time, the rolled aluminum alloy product can be quenched at step 1330 to produce a heat treated aluminum alloy product. At step 1330, multiple quench rates are shown. For example, a quench rate of 550°C/sec, 350°C/sec, 150°C/sec, 50°C/sec, or 5°C/sec can be used in step 1330. The quenching in step 1330 can use any of the various quenching methods described herein. In some embodiments, the rolled aluminum alloy product can be quenched to a second temperature, such as room temperature. In some cases, the heat treated aluminum alloy product can be maintained at room temperature for 24 hours.

In some cases, heat treated aluminum alloy products can be subjected to an aging process. At step 1350, the heat treated aluminum alloy product may be subjected to a T6 tempering process. Optionally, a T7 tempering process can also be used. As shown in graph 1300, in step 1350, the heat treated aluminum alloy product may be reheated to a temperature of 125°C. Heat treated aluminum alloy products can be maintained at 125°C for 24 hours before returning to room temperature.

Methods of Using the Disclosed Aluminum Alloy Products The aluminum alloy products described herein can be used in automotive applications and other transportation applications, including aircraft, rail applications. For example, the disclosed aluminum alloy products include bumpers, side beams, roof beams, cross beams, pillar reinforcements (e.g., A-pillars, B-pillars, and C-pillars), inner panels, outer panels, side panels, inner hoods, It can be used to make automotive structural parts such as outer hoods, lockers, or trunk lid panels. The aluminum alloy products and methods described herein can also be used to make exterior and interior panels in aircraft or rail vehicle applications, for example. In some embodiments, the aluminum alloy products described herein can be incorporated into upper wings, lower wings, or other body assemblies in aerospace applications.

The aluminum alloy products and methods described herein can also be used in electronics applications or any other desired applications. For example, the aluminum alloy products and methods described herein can be used to make housings for electronic devices, including cell phones and tablet computers. In some examples, aluminum alloy products can be used to make housings for the outer casing of mobile phones (e.g., smartphones), the bottom chassis of tablets, and other portable electronic devices.

Illustrative Examples When used below, references to any of a series of illustrative examples should be understood as references to each of those examples individually (e.g., “Examples 1-4” refers to “Examples 1, 2, 3, or 4).

Example 1 is a method of manufacturing an aluminum alloy product, wherein the rolled aluminum alloy product contains 4.00% to 15.00% by weight of Zn, 0.10% to 3.50% by weight of Cu, 1.00% to 4.00% by weight Mg, 0.05% to 0.50% by weight Fe, 0.05% to 0.30% by weight Si, 0.05% to 0.0% by weight. 400 rolled aluminum alloy products containing 7XXX series aluminum alloy containing 25 wt% Zr, up to 0.25 wt% Mn, up to 0.20 wt% Cr, up to 0.15 wt% Ti, and Al heating the rolled aluminum alloy product to a first temperature of 525° C. to 525° C.; maintaining the rolled aluminum alloy product at the first temperature or within 10° C. of the first temperature for 15 seconds to 30 minutes; quenching the aluminum alloy product at a quenching rate of 0.5°C/sec to 125°C/sec, thereby producing a heat treated aluminum alloy product, wherein the heat treated aluminum alloy product has a hardening rate of 0.3 to 0.0°C. 8, said strain ratio being measured according to ASTM G129 and/or ASTM G139 standard test methods.

Example 2 is the method of any of the preceding or subsequent examples, wherein the rolled aluminum alloy product is quenched until the rolled aluminum alloy product reaches a second temperature of 10°C to 100°C.

Example 3 provides that the quenching includes a first quenching at a first quenching rate to an intermediate temperature and a second quenching to the second temperature at a second quenching rate, The method of any of the preceding or subsequent instances, wherein the second quenching rate is greater than the first quenching rate.

Example 4 is the method of any of the preceding or subsequent examples, wherein the quenching rate is between 5° C./sec and 125° C./sec.

Example 5 is the method of any of the preceding or subsequent examples, wherein the quenching rate is from 10° C./sec to 125° C./sec.

Example 6 shows that the rolled aluminum alloy product contains 4.00% to 15.00% by weight of Zn, 0.20% to 2.60% by weight of Cu, and 1.40% to 2.80% by weight. of Mg, 0.10 wt% to 0.35 wt% Fe, 0.05 wt% to 0.20 wt% Si, 0.05 wt% to 0.15 wt% Zr, 0.01 wt% Any of the preceding or subsequent instances comprising ~0.05 wt% Mn, 0.01 wt% ~ 0.05 wt% Cr, 0.001 wt% ~ 0.05 wt% Ti, and Al. This is the method.

Example 7 shows that the rolled aluminum alloy product contains 4.00% to 15.00% by weight of Zn, 0.30% to 2.50% by weight of Cu, and 1.60% to 2.60% by weight. of Mg, 0.10 wt% to 0.25 wt% Fe, 0.07 wt% to 0.15 wt% Si, 0.09 wt% to 0.15 wt% Zr, 0.02 wt% Any of the preceding or subsequent instances comprising ~0.05 wt% Mn, 0.03 wt% ~ 0.05 wt% Cr, 0.003 wt% ~ 0.035 wt% Ti, and Al. This is the method.

Example 8 shows that the rolled aluminum alloy product contains 4.00% to 15.00% by weight of Zn, 0.20% to 2.10% by weight of Cu, and 2.20% to 2.40% by weight. of Mg, 0.18 wt% to 0.23 wt% Fe, 0.09 wt% to 0.12 wt% Si, 0.05 wt% to 0.15 wt% Zr, 0.04 wt% Contains ~0.09 wt% Mn, 0.03 wt% ~ 0.09 wt% Cr, 0.01 wt% ~ 0.02 wt% Ti, up to 0.15 wt% impurities, and Al. , either in the manner of preceding or subsequent instances.

Example 9 is such that the rolled aluminum alloy product contains up to 0.20% by weight of one or more of Mo, Nb, Be, B, Co, Sn, Sr, V, In, Hf, Ag, Sc, and Ni. The method of any of the preceding or subsequent instances further comprising:

Example 10 is the method of any of the preceding or subsequent examples, wherein the heat treated aluminum alloy product exhibits a corrosion depth of 5 μm to 300 μm when measured according to the ASTM G110 standard test method.

Example 11 is the method of any of the preceding or subsequent examples, wherein the corrosion occurring within the corrosion depth includes at least one of pitting corrosion or intergranular corrosion.

Example 12 is the method of any of the preceding or subsequent examples, where the corrosion includes intergranular corrosion when the quenching rate is 50° C./sec or less.

Example 13 is the method of any of the preceding or subsequent examples, wherein the corrosion does not include intergranular corrosion when the quenching rate is greater than 5° C./sec.

Example 14 is the method of any of the preceding or subsequent examples, wherein the heat treated aluminum alloy product exhibits a corrosion depth of 25 μm to 50 μm when the quenching rate is 125° C./sec.

Example 15 is the method of any of the preceding or subsequent examples, wherein the first temperature is a solution temperature.

Example 16 is the method of any of the preceding or subsequent examples, wherein the second temperature is ambient temperature.

Example 17 is the method of any of the preceding or subsequent examples, wherein heating and hardening the rolled aluminum alloy product corresponds to a solution heat treatment process.

Example 18 is the method of any of the preceding or subsequent examples further comprising subjecting the rolled aluminum alloy product to a hot forming process after heating the rolled aluminum alloy product.

Example 19 is the method of any of the preceding or subsequent examples, wherein hardening the rolled aluminum alloy product comprises a mold hardening process.

Example 20 is the method of any of the preceding or subsequent examples, wherein quenching the rolled aluminum alloy product comprises a water quenching process.

Example 21 is the method of any of the preceding or subsequent examples, wherein hardening the rolled aluminum alloy product comprises a forced air hardening process.

Example 22 is the method of any of the preceding or subsequent examples further comprising aging the heat treated aluminum alloy product to a T6 heat or a T7 heat.

Example 23 is the method of any of the preceding or subsequent examples further comprising heating the heat treated aluminum alloy product to a temperature of 100° C. to 170° C. and maintaining the temperature at said temperature for 12 hours to 30 hours.

Example 24 is the method of any of the preceding or subsequent examples, wherein the heat treated aluminum alloy product exhibits an ultimate tensile strength of 500 MPa to 650 MPa.

Example 25 is the method of any of the preceding or subsequent examples, wherein the heat treated aluminum alloy product exhibits an ultimate tensile strength of 605 MPa to 615 MPa when the quenching rate is about 125° C./sec.

Example 26 is the method of any of the preceding or subsequent examples, wherein the heat treated aluminum alloy product exhibits a yield stress of 400 MPa to 600 MPa.

Example 27 is the method of any of the preceding or subsequent examples, wherein the heat treated aluminum alloy product exhibits a yield stress of 560 MPa to 580 MPa when the quenching rate is about 125° C./sec.

Example 28 is the method of any of the preceding or subsequent examples in which the heat treated aluminum alloy product exhibits a uniform elongation of 7.50% to 10.50%.

Example 29 is produced by the method of any of the preceding or subsequent examples, wherein the heat treated aluminum alloy product exhibits a uniform elongation of 9.00% to 9.60% when the quenching rate is about 125° C./sec. be.

Example 30 is the method of any of the preceding or subsequent examples, wherein the heat treated aluminum alloy product exhibits a total elongation of 10.00% to 15.00%.

Example 31 is the method of any of the preceding or subsequent examples, wherein the heat treated aluminum alloy product exhibits a total elongation of 13.80% to 14.20% when the quenching rate is about 125° C./sec. .

Example 32 is the method of any of the preceding or subsequent examples, wherein the heat treated aluminum alloy product exhibits a strain ratio of 0.375 to 0.425 when the quench rate is about 125° C./sec.

Example 33 is the method of any of the preceding or subsequent examples, wherein the heat treated aluminum alloy product exhibits a precipitate-free zone width of 10 nm to 110 nm.

Example 34 is the method of any of the preceding or subsequent examples, wherein the heat treated aluminum alloy product exhibits a precipitate-free zone width of 10 nm to 13 nm when the quench rate is about 125° C./sec.

Example 35 is a product comprising a heat-treated aluminum alloy, wherein the heat-treated aluminum alloy contains 4.00% to 15.00% by weight of Zn, 0.10% to 3.50% by weight of Cu, 1. 00% to 4.00% by weight Mg, 0.05% to 0.50% by weight Fe, 0.05% to 0.30% by weight Si, 0.05% to 0.25% by weight % Zr, up to 0.25 wt.% Mn, up to 0.20 wt.% Cr, up to 0.15 wt.% Ti, up to 0.15 wt.% impurities, and Al, and from 0.3 to A rolled 7XXX aluminum alloy product exhibiting a strain ratio of 0.8, said product being measured according to ASTM G129 and/or ASTM G139 standard test methods.

Example 36 is the product of any of the preceding or subsequent examples, wherein the rolled 7XXX series aluminum alloy product exhibits a corrosion depth of 5 μm to 300 μm when measured according to the ASTM G110 standard test method.

Example 37 is the product of any of the preceding or subsequent examples in which the rolled 7XXX series aluminum alloy product exhibits a corrosion depth of 25 μm to 50 μm when the quench rate is 125° C./sec.

Example 38 is the product of any of the preceding or subsequent examples, wherein the rolled 7XXX series aluminum alloy product is a formed aluminum alloy product.

Example 39 is the product of any of the preceding or subsequent examples, wherein the rolled 7XXX series aluminum alloy product is a hot formed aluminum alloy product.

Example 40 is a product of any of the preceding or subsequent examples in which the rolled 7XXX aluminum alloy product is up to T6 heat or T7 heat.

Example 41 is the product of any of the preceding or subsequent examples in which the rolled 7XXX series aluminum alloy product exhibits an ultimate tensile strength of 500 MPa to 650 MPa.

Example 42 is the product of any of the preceding or subsequent examples in which the rolled 7XXX series aluminum alloy product exhibits an ultimate tensile strength of 605 MPa to 615 MPa when the quenching rate is 125° C./sec.

Example 43 is the product of any of the preceding or subsequent examples in which the rolled 7XXX series aluminum alloy product exhibits a yield stress of 400 MPa to 600 MPa.

Example 44 is the product of any of the preceding or subsequent examples in which the rolled 7XXX series aluminum alloy product exhibits a yield strength of 560 MPa to 580 MPa when the quenching rate is 125° C./sec.

Example 45 is the product of any of the preceding or subsequent examples in which the rolled 7XXX series aluminum alloy product exhibits a uniform elongation of 7.50% to 10.50%.

Example 46 is a product of any of the preceding or subsequent examples in which the rolled 7XXX aluminum alloy product exhibits a uniform elongation rate of 9.00% to 9.60% when the quenching rate is 125° C./sec. It is.

Example 47 is the product of any of the preceding or subsequent examples in which the rolled 7XXX series aluminum alloy product exhibits a total elongation of 10.00% to 15.00%.

Example 48 is the product of any of the preceding or subsequent examples, wherein the rolled 7XXX aluminum alloy product exhibits a total elongation of 13.80% to 14.20% when the quenching rate is 125° C./sec. be.

Example 49 is the product of any of the preceding or subsequent Examples in which the rolled 7XXX series aluminum alloy product exhibits a strain ratio of 0.375 to 0.425 when the quenching rate is 125° C./sec.

Example 50 is the product of any of the preceding or subsequent examples in which the rolled 7XXX series aluminum alloy product exhibits a precipitate-free zone width of 10 nm to 110 nm.

Example 51 is the product of any of the preceding or subsequent Examples in which the rolled 7XXX series aluminum alloy product exhibits a precipitate-free zone width of 10 nm to 13 nm when the quenching rate is about 125° C./sec.

In Example 52, the rolled aluminum alloy product is heated to a first temperature of 400° C. to 525° C., and the rolled aluminum alloy product is heated to a first temperature of 400° C. to 525° C. or produced by maintaining within 10°C of said first temperature for a duration of 15 seconds to 30 minutes and quenching said rolled aluminum alloy product at a quenching rate of 0.5°C/second to 125°C/second. product of any preceding or subsequent instance.

Example 53 is the product of any of the preceding or subsequent examples produced according to the method of any of the preceding or subsequent examples.

Instance 54 is an automotive product that incorporates the product of either the preceding or subsequent instances.

Instance 55 is an aerospace product that incorporates the products of either the preceding or subsequent instances.

Example 56 is an automotive product incorporating a product produced according to the method of any of the preceding or subsequent examples.

Example 57 is an aerospace product incorporating a product produced according to the method of either the preceding or subsequent examples.

All patents, publications and abstracts cited above are herein incorporated by reference in their entirety. The foregoing description of embodiments, including illustrated embodiments, has been presented for purposes of illustration and description only and is not intended to be exhaustive or limited to the precise form disclosed. isn't it. Their numerous modifications, adaptations, and uses will be apparent to those skilled in the art.

Claims (58)

heating a rolled aluminum alloy product to a first temperature of 400°C to 525°C, the rolled aluminum alloy product comprising:
4.00% to 15.00% by weight of Zn,
0.10% to 3.50% by weight of Cu,
1.00% to 4.00% by weight of Mg,
0.05% to 0.50% by weight of Fe,
0.05% to 0.30% by weight of Si,
0.05% to 0.25% by weight of Zr,
Mn up to 0.25% by weight,
Cr up to 0.20% by weight,
The heating comprises a 7XXX aluminum alloy containing up to 0.15% by weight of Ti and Al;
maintaining the rolled aluminum alloy product at the first temperature or within 10° C. of the first temperature for a duration of 15 seconds to 30 minutes;
quenching the rolled aluminum alloy product at a quenching rate of 0.5° C./sec to 125° C./sec, thereby producing a heat treated aluminum alloy product, wherein the heat treated aluminum alloy product has a hardening rate of 0.3° C./sec to 125° C./sec. Said method exhibiting a strain ratio of 0.8, said strain ratio being measured according to ASTM G129 standard test method. The method of claim 1, wherein the rolled aluminum alloy product is quenched until the rolled aluminum alloy product reaches a second temperature of 10°C to 100°C. The quenching includes a first quenching at a first quenching rate to an intermediate temperature and a second quenching at a second quenching rate to the second temperature, the second quenching rate 3. The method of claim 2, wherein: is greater than the first quenching rate. The method of claim 1, wherein the quenching rate is between 5°C/sec and 125°C/sec. The method of claim 1, wherein the quenching rate is between 10°C/sec and 125°C/sec. The rolled aluminum alloy product is
4.00% to 15.00% by weight of Zn,
0.20% to 2.60% by weight of Cu,
1.40% to 2.80% by weight Mg,
0.10% to 0.35% by weight of Fe,
0.05% to 0.20% by weight of Si,
0.05% to 0.15% by weight of Zr,
0.01% to 0.05% by weight of Mn,
0.01% to 0.05% by weight of Cr,
The method of claim 1, comprising 0.001% to 0.05% by weight of Ti and Al. The rolled aluminum alloy product is
4.00% to 15.00% by weight of Zn,
0.30% to 2.50% by weight of Cu,
1.60% to 2.60% by weight of Mg,
0.10% to 0.25% by weight of Fe,
0.07% to 0.15% by weight of Si,
0.09% to 0.15% by weight of Zr,
0.02% to 0.05% by weight of Mn,
0.03% to 0.05% by weight of Cr,
The method of claim 1, comprising 0.003% to 0.035% by weight of Ti and Al. The rolled aluminum alloy product is
4.00% to 15.00% by weight of Zn,
0.20% to 2.10% by weight of Cu,
2.20% to 2.40% by weight Mg,
0.18% to 0.23% by weight of Fe,
0.09% to 0.12% by weight of Si,
0.05% to 0.15% by weight of Zr,
0.04% to 0.09% by weight of Mn,
0.03% to 0.09% by weight of Cr,
0.01% to 0.02% by weight of Ti,
2. The method of claim 1, comprising up to 0.15% by weight of impurities and Al. Claim wherein the rolled aluminum alloy product further comprises up to 0.20% by weight of one or more of Mo, Nb, Be, B, Co, Sn, Sr, V, In, Hf, Ag, Sc and Ni. The method described in Section 1. The method of claim 1, wherein the heat treated aluminum alloy product exhibits a corrosion depth of 5 μm to 300 μm when measured according to ASTM G110 standard test method. 11. The method of claim 10, wherein the corrosion occurring within the corrosion depth includes at least one of pitting corrosion or intergranular corrosion. 12. The method of claim 11, wherein the corrosion includes intergranular corrosion when the quenching rate is 50<0>C/sec or less. 12. The method of claim 11, wherein the corrosion does not include intergranular corrosion when the quenching rate is greater than 5[deg.]C/sec. 11. The method of claim 10, wherein the heat treated aluminum alloy product exhibits a corrosion depth of 25 μm to 50 μm when the quench rate is about 125° C./sec or less. 2. The method of claim 1, wherein the first temperature is a solution temperature. 3. The method of claim 2, wherein the second temperature is ambient temperature. 2. The method of claim 1, wherein heating and hardening the rolled aluminum alloy product corresponds to a solution heat treatment process. The method of claim 1, further comprising subjecting the rolled aluminum alloy product to a hot forming process after heating the rolled aluminum alloy product. 2. The method of claim 1, wherein hardening the rolled aluminum alloy product includes a mold hardening process. 2. The method of claim 1, wherein quenching the rolled aluminum alloy product includes a water quenching process. 2. The method of claim 1, wherein hardening the rolled aluminum alloy product comprises a forced air hardening process. 2. The method of claim 1, further comprising aging the heat treated aluminum alloy product to a T6 temper. 2. The method of claim 1, further comprising aging the heat treated aluminum alloy product to a T7 temper. The method of claim 1, further comprising heating the heat-treated aluminum alloy product to a temperature of 100°C to 170°C and maintaining the temperature for 12 to 30 hours. The method of claim 1, wherein the heat treated aluminum alloy product exhibits an ultimate tensile strength of 500 MPa to 650 MPa. 26. The method of claim 25, wherein the heat treated aluminum alloy product exhibits an ultimate tensile strength of 605 MPa to 615 MPa when the quenching rate is about 125° C./sec or less. The method of claim 1, wherein the heat treated aluminum alloy product exhibits a yield stress of 400 MPa to 600 MPa. 28. The method of claim 27, wherein the heat treated aluminum alloy product exhibits a yield stress of 560 MPa to 580 MPa when the quenching rate is about 125° C./sec or less. The method of claim 1, wherein the heat treated aluminum alloy product exhibits a uniform elongation of 7.50% to 10.50%. 30. The method of claim 29, wherein the heat treated aluminum alloy product exhibits a uniform elongation of 9.00% to 9.60% when the quenching rate is about 125° C./sec or less. The method of claim 1, wherein the heat treated aluminum alloy product exhibits a total elongation of 10.00% to 15.00%. 32. The method of claim 31, wherein the heat treated aluminum alloy product exhibits a total elongation of 13.80% to 14.20% when the quenching rate is about 125° C./sec. The method of claim 1, wherein the heat treated aluminum alloy product exhibits a strain ratio of 0.375 to 0.425 when the quenching rate is about 125° C./second or less. The method of claim 1, wherein the heat-treated aluminum alloy product exhibits a precipitate-free zone width of 10 nm to 110 nm. 35. The method of claim 34, wherein the heat-treated aluminum alloy product exhibits a precipitate-free zone width of 10 nm to 13 nm when the quenching rate is about 125° C./sec or less. A product comprising a heat-treated aluminum alloy, the heat-treated aluminum alloy comprising:
4.00% to 15.00% by weight of Zn,
0.10% to 3.50% by weight of Cu,
1.00% to 4.00% by weight of Mg,
0.05% to 0.50% by weight of Fe,
0.05% to 0.30% by weight of Si,
0.05% to 0.25% by weight of Zr,
Mn up to 0.25% by weight,
Cr up to 0.20% by weight,
A rolled 7XXX aluminum alloy product containing a maximum of 0.15% by weight of Ti, a maximum of 0.15% by weight of impurities, and Al, and exhibiting a strain ratio of 0.3 to 0.8, and the strain ratio said product, wherein said product is measured according to ASTM G129 standard test method. 37. The product of claim 36, wherein the rolled 7XXX series aluminum alloy product exhibits a corrosion depth of 5 μm to 300 μm when measured according to ASTM G110 standard test method. 38. The product of claim 37, wherein the rolled 7XXX series aluminum alloy product exhibits a corrosion depth of 25 μm to 50 μm when the quenching rate is about 125° C./sec or less. 37. The product of claim 36, wherein the rolled 7XXX series aluminum alloy product is a formed aluminum alloy product. 37. The product of claim 36, wherein the rolled 7XXX series aluminum alloy product is a hot formed aluminum alloy product. 37. The product of claim 36, wherein the rolled 7XXX series aluminum alloy product is in a T6 heat or a T7 heat. 37. The product of claim 36, wherein the rolled 7XXX series aluminum alloy product exhibits an ultimate tensile strength of 500 MPa to 650 MPa. 43. The product of claim 42, wherein the rolled 7XXX aluminum alloy product exhibits an ultimate tensile strength of 605 MPa to 615 MPa when the quenching rate is about 125° C./sec or less. 37. The product of claim 36, wherein the rolled 7XXX series aluminum alloy product exhibits a yield stress of 400 MPa to 600 MPa. 45. The product of claim 44, wherein the rolled 7XXX series aluminum alloy product exhibits a yield stress of 560 MPa to 580 MPa when the quenching rate is about 125° C./sec or less. 37. The product of claim 36, wherein the rolled 7XXX aluminum alloy product exhibits a uniform elongation of 7.50% to 10.50%. 47. The product of claim 46, wherein the rolled 7XXX aluminum alloy product exhibits a uniform elongation of 9.00% to 9.60% when the quenching rate is about 125° C./sec or less. 37. The product of claim 36, wherein the rolled 7XXX series aluminum alloy product exhibits a total elongation of 10.00% to 15.00%. 49. The product of claim 48, wherein the rolled 7XXX aluminum alloy product exhibits a total elongation of 13.80% to 14.20% when the quenching rate is about 125° C./sec or less. 37. The product of claim 36, wherein the rolled 7XXX aluminum alloy product exhibits a strain ratio of 0.375 to 0.425 when the quenching rate is about 125° C./second or less. 37. The article of claim 36, wherein the rolled 7XXX aluminum alloy article exhibits a precipitate-free zone width of 10 nm to 110 nm. 52. The product of claim 51, wherein the rolled 7XXX aluminum alloy product exhibits a precipitate-free zone width of 10 nm to 13 nm when the quenching rate is about 125° C./sec or less. The rolled 7XXX aluminum alloy product is
Heating a rolled aluminum alloy product containing a 7XXX aluminum alloy to a first temperature of 400°C to 525°C,
maintaining the rolled aluminum alloy product at the first temperature or within 10° C. of the first temperature for a duration of 15 seconds to 30 minutes;
37. The product of claim 36, produced by quenching the rolled aluminum alloy product at a quench rate of 0.5°C/sec to 125°C/sec. A product according to claim 36, produced according to a method according to any of claims 1 to 35. An automotive product incorporating a product according to any of claims 36 to 53. An aerospace product incorporating a product according to any of claims 36-53. An automotive product incorporating a product produced according to the method of any of claims 1 to 35. An aerospace product incorporating a product produced according to the method of any of claims 1-35.

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