CN107164665A - High tenacity Alcoa section bar and its preparation technology - Google Patents
High tenacity Alcoa section bar and its preparation technology Download PDFInfo
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
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Abstract
The present invention relates to metal material technical field of smelting, and in particular to a kind of high tenacity Alcoa section bar and its preparation technology, on the basis of the total amount of aluminium alloy extrusions, by weight percentage, and the high tenacity Alcoa section bar contains following element：Zn 1.17~3.48%, Zr 0.008~0.21%, B 0.89~1.75%, Mg 1.25~3.71%, Ni 1.21~3.81%, Cu 0.08~0.36%, Ti 0.26~0.84%, Ta 0.005~0.12%, trace element 0.01~0.03%, remaining is Al and inevitable impurity, aluminide disperse phase is formd in the high tenacity Alcoa section bar that the present invention is provided, and produce synergy, play refinement as-cast grain, strengthen the effect of pinning dislocation, so as to significantly improve the recrystallization temperature of aluminium alloy extrusions, improve the intensity of aluminium alloy extrusions, fracture toughness and anti-stress corrosiveness；(2) carry out in the preparation ultrasonically treated, can not only improve the uniformity of each material in alloy molten solution, impurity can also be made to be separated from liquation, so as to reach the effect for improving intensity of aluminum alloy.
Description
Technical field
The present invention relates to metal material technical field of smelting, and in particular to a kind of high tenacity Alcoa section bar and its system
Standby technique.
Background technology
Aluminium alloy has that density is small, intensity is high, easy-formation processing, electrical and thermal conductivity are good and aboundresources etc. is numerous excellent
Performance, is the class non-ferrous metal structural material being most widely used in industry, in Aeronautics and Astronautics, traffic, building materials, oil, change
The fields such as work, electronics, electric power, national defence are widely used.In the past few decades, people enter for how to improve the intensity of aluminium alloy
The research gone extensively and profoundly, it is considered that, the chemical composition in alloy is to determine one of key factor of alloy strength, mainly
Alloying element is low, then intensity is relatively low, and toughness, corrosion resistance and ingot casting formability are preferable；And main alloy element is high, then intensity compared with
Height, toughness and corrosion resistance reduction, and as main alloy element content is improved, cast form hydraulic performance decline.That is, it is desirable to
The alloy material of high intensity is obtained it is necessary to sacrifice toughness, corrosion resistance and formability etc. for cost.However as modern industry
With the development of national defence, the demand not only for aluminium alloy is increasing, for aluminium alloy combination property requirement also increasingly
It is high.Particularly in the field such as Aero-Space and automobile making, provided not only for reduction structural member weight with reducing energy consumption, saving
The requirement more and more higher in source, and can bear enormous impact and vibration for main components that is, possess good toughness
It is required that also increasingly urgent, the aluminium of the Good All-around Property such as high intensity, high tenacity and excellent corrosion resistance and formability is had concurrently
Alloy urgently occurs.
CN 100410406C disclose a kind of while having the height of higher tensile strength and elongation percentage comprehensive mechanical property
Strong high toughness casting aluminum alloy, when the cast aluminium alloy gold maximum pulling strength of the invention reaches 520Mpa, its elongation percentage is 13.5%, its
Intensity and toughness are above ZL205A alloys；The invention cast aluminium alloy gold is when elongation percentage is 16.5%, and its tensile strength reaches
505MPa, the tensile strength than high-ductility 205A alloys improves 100MPa.CN100554464C discloses a kind of high tough containing manganese
Aluminium alloy, more particularly to a kind of 7000 line aluminium alloy materials for being injected into the standby high-strength and high ductility of shape, the high tough aluminium alloy tool
Have more than 800MPa tensile strength and reach the elongation percentage of 5.3% and the above, with more preferable heat resistance, aviation can be improved
And the structure efficiency and performance of transportation vehicle materials.CN101403060B discloses a kind of high damnification resistant aluminum alloy, and its feature exists
The bismuth of 0.001%-1.0% (percentage by weight) is added in the matrix of aluminium alloy.The optimum content scope of added bismuth is
0.001-0.3%.The preparation method of the high damnification resistant aluminum alloy is to add bismuth metal in the fusion process of aluminium alloy to realize
's.The invention significantly improves the obdurability of material, the endurance for particularly improving material is damaging due to addition trace bismuth
Energy.The high damnification resistant aluminum alloy can be used for aviation, the structural member of automobile and other industries.
The above-mentioned aluminium alloy referred to, or purity are relatively low, or toughness is not high, or decay resistance is poor, or formability is not good,
It has been short of in terms of combination property, the aluminium alloy for the excellent combination property that people are expected not yet occurs so far.
The content of the invention
In view of the shortcomings of the prior art, present invention aims at a kind of aluminium alloy of excellent combination property is provided, it has
High-purity, high intensity, high tenacity, while also with good decay resistance and may be cast as formability.
To realize object above, the present invention is achieved by the following technical programs：
A kind of high tenacity Alcoa section bar, it is by weight percentage, described on the basis of the total amount of aluminium alloy extrusions
High tenacity Alcoa section bar contains following element：Zn 1.17~3.48%, Zr 0.008~0.21%, B 0.89~
1.75%, Mg 1.25~3.71%, Ni 1.21~3.81%, Cu 0.08~0.36%, Ti 0.26~0.84%, Ta
0.005~0.12%, trace element 0.01~0.03%, remaining is Al and inevitable impurity.
Magnesium can not only improve the corrosion resistance of aluminium alloy, moreover it is possible to improve the intensity of aluminium alloy；Added simultaneously in aluminium
Zinc and magnesium, form hardening constituent Mg/Zn2, and obvious invigoration effect is produced to alloy, hence it is evident that increase the tensile strength of aluminium alloy and bend
Take intensity；Titanium is with aluminium formation TiAl2 phases, and heterogeneous necleus during as crystallization plays the work of refinement cast sturcture and seam organization
With；Zirconium and aluminium formation ZrAl3 compounds, can hinder recrystallization process, refine recrystal grain；Tantalum can significantly improve aluminium alloy
Decay resistance.
The principal element of influence aluminium alloy capability is exactly the proportioning of each material, in order to improve the intensity of aluminium alloy and corrosion-resistant
Property, it is preferred that on the basis of the total amount of aluminium alloy extrusions, by weight percentage, the high tenacity Alcoa section bar contains
There is following element：Zn 1.58~2.96%, Zr 0.012~0.085%, B 0.92~1.28%, Mg 2.11~5.74%,
Ni 1.5~3.26%, Cu 0.08~0.36%, Ti 0.35~0.62%, Ta 0.008~0.1%, trace element 0.01~
0.03%, remaining is Al and inevitable impurity.
It is preferred that, on the basis of the total amount of aluminium alloy extrusions, by weight percentage, B, Ti, Ta in the aluminium alloy
Overall content is 1.35~2%.
It is preferred that, the weight ratio of the Mg and Ti are 1：(0.1~0.3).
According to the present invention, rare earth metal can form new polynary disperse phase with the aluminide in system, this new polynary
The strong pinning dislocation of disperse phase energy and sub boundary, significantly inhibit the recrystallization of matrix, remain the fibre based on low-angle boundary
Shape tissue is tieed up, so that the corrosive nature of aluminium alloy extrusions is improved, what the rare earth element was often known for those skilled in the art
Rare earth metal, it is preferred that the rare earth element is at least one of scandium, yttrium, niobium, lanthanide series.
It is preferred that, the high tenacity Alcoa section bar elongation percentage be 6.3~9.8%, yield strength be 682~
850MPa, tensile strength is 420~590MPa.
A kind of preparation technology of high tenacity Alcoa section bar, comprises the following steps：
(1) dispensing and melting：Aluminium ingot, zirconium ingot, boron ingot, magnesium ingot, nickel ingot are added in smelting furnace, mineral aggregate is warming up to and melts completely
Change, 30~40min be incubated at 750~760 DEG C, add refining agent, be warming up to 980~1000 DEG C, then add titanium and tantalum,
After metal melts completely, the refining agent on aluminium liquid surface is removed, and it is ultrasonically treated to molten metal progress, except removing dross；
(2) 450~470 DEG C are cooled to the molten metal of step (1), then cast under vacuo, obtain aluminium alloy casting
Ingot；
(3) aluminium alloy cast ingot is incubated 1~2h at 150~180 DEG C, then heats to 510~520 DEG C, insulation 1~
5h, then aluminium alloy is put into extrusion barrel carries out extrusion forming；
(4) section bar for obtaining step (3) carries out solution treatment and artificial aging is handled.
It is preferred that, in step (1), the refining agent addition is the 0.1-0.2% of whole alumiunum amount weight, the refining agent
For at least one of NaCl, Na3AlF6, MgCl2, NaF, Na2SiF6, Na2CO3 and AlF3.
It is preferred that, the extrusion forming process is that extrusion coefficient controls into 96~97, extrusion speed be 3.5m/min~
4.5m/min。
It is preferred that, wherein, the solid solution treatment process is 480~510 DEG C of temperature, and 1~12h of soaking time, insulation is completed
The temperature of water quenching or oil quenching to part of quenching of coming out of the stove afterwards is 10~80 DEG C；The artificial aging handling process is in 150 DEG C~155 DEG C models
Interior carry out timeliness is enclosed, aging time is 10h~10.5h.
Compared with prior art, the present invention has following technique effect：
(1) aluminium in system with other metals by foring aluminide disperse phase, and produces synergy, plays refinement
As-cast grain, strengthens the effect of pinning dislocation, so as to significantly improve the recrystallization temperature of aluminium alloy extrusions, reduces crystal grain
Recrystallization, and quenching tender subject is overcome, improve the intensity, fracture toughness and anti-stress corrosiveness of aluminium alloy extrusions.
(2) carry out in the preparation ultrasonically treated, can not only improve the uniformity of each material in alloy molten solution, can also make
Impurity is separated from liquation, is not only improved the purity of aluminium alloy, is also improved the dispersed homogeneous degree of each material in alloy, so that
Reach the effect for improving intensity of aluminum alloy.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
The compression strength of aluminium alloy extrusions is measured using universal electrical testing machine in the present invention, hardness digital display Brinell hardness
Meter measurement.
Embodiment 1
A kind of high tenacity Alcoa section bar, it is by weight percentage, described on the basis of the total amount of aluminium alloy extrusions
High tenacity Alcoa section bar contains following element：Zn 2.06%, Zr 0.034%, B 0.98%, Mg 3.45%, Ni
2.26%, Cu 0.12%, Ti 0.37%, Ta 0.015%, trace element 0.01%, remaining is Al and inevitably miscellaneous
B, Ti, Ta overall content are 1.475% in matter, the aluminium alloy, wherein, the weight ratio of the Mg and Ti are 1：0.11；
The preparation technology of described high tenacity Alcoa section bar comprises the following steps：
(1) dispensing and melting：Aluminium ingot, zirconium ingot, boron ingot, magnesium ingot, nickel ingot are added in smelting furnace, mineral aggregate is warming up to and melts completely
Change, 35min is incubated at 750 DEG C, add NaCl, be warming up to 990 DEG C, then add titanium and tantalum, after metal melts completely, remove
The NaCl gone on aluminium liquid surface, and it is ultrasonically treated to molten metal progress, and except removing dross, the NaCl additions are whole alumiunum amount weight
The 0.1% of amount；
(2) 460 DEG C are cooled to the molten metal of step (1), then cast under vacuo, obtain aluminium alloy cast ingot；
(3) aluminium alloy cast ingot is incubated 1h at 160 DEG C, then heats to 510 DEG C, be incubated 2h, then aluminium alloy is put into
Extrusion forming is carried out in extrusion barrel, the extrusion forming process is that extrusion coefficient controls into 96, and extrusion speed is 3.6m/min；
(4) section bar for obtaining step (3) carries out solution treatment and artificial aging is handled, and the solid solution treatment process is temperature
490 DEG C of degree, soaking time 2h, the temperature of come out of the stove after the completion of insulation water quenching or oil quenching to part of quenching is 60 DEG C；At the artificial aging
Science and engineering skill is carries out timeliness in the range of 150 DEG C, and aging time is 10h.
Embodiment 2
A kind of high tenacity Alcoa section bar, it is by weight percentage, described on the basis of the total amount of aluminium alloy extrusions
High tenacity Alcoa section bar contains following element：Zn 2.46%, Zr 0.056%, B 1.13%, Mg 3.54%, Ni
2.34%, Cu 0.14%, Ti 0.49%, Ta 0.042%, trace element 0.02%, remaining is Al and inevitably miscellaneous
B, Ti, Ta overall content are 1.662% in matter, the aluminium alloy, wherein, the weight ratio of the Mg and Ti are 1：0.14；
The preparation technology of described high tenacity Alcoa section bar comprises the following steps：
(1) dispensing and melting：Aluminium ingot, zirconium ingot, boron ingot, magnesium ingot, nickel ingot are added in smelting furnace, mineral aggregate is warming up to and melts completely
Change, 30min is incubated at 755 DEG C, add Na3AlF6, be warming up to 990 DEG C, then add titanium and tantalum, treat that metal melts completely
Afterwards, the Na3AlF6 on aluminium liquid surface is removed, and it is ultrasonically treated to molten metal progress, and except removing dross, the Na3AlF6 is added
Measure as the 0.1% of whole alumiunum amount weight；
(2) 450 DEG C are cooled to the molten metal of step (1), then cast under vacuo, obtain aluminium alloy cast ingot；
(3) aluminium alloy cast ingot is incubated 1h at 150 DEG C, then heats to 515 DEG C, be incubated 2h, then aluminium alloy is put into
Extrusion forming is carried out in extrusion barrel, the extrusion forming process is that extrusion coefficient controls into 96, and extrusion speed is 3.6m/min；
(4) section bar for obtaining step (3) carries out solution treatment and artificial aging is handled, and the solid solution treatment process is temperature
490 DEG C of degree, soaking time 4h, the temperature of come out of the stove after the completion of insulation water quenching or oil quenching to part of quenching is 50 DEG C；At the artificial aging
Science and engineering skill is carries out timeliness in the range of 150 DEG C, and aging time is 10h.
Embodiment 3
A kind of high tenacity Alcoa section bar, it is by weight percentage, described on the basis of the total amount of aluminium alloy extrusions
High tenacity Alcoa section bar contains following element：Zn 2.16%, Zr 0.067%, B 0.96%, Mg 2.45%, Ni
1.92%, Cu 0.22%, Ti 0.45%, Ta 0.024%, trace element 0.02%, remaining is Al and inevitably miscellaneous
B, Ti, Ta overall content are 1.434% in matter, the aluminium alloy, wherein, the weight ratio of the Mg and Ti are 1：0.18；
The preparation technology of described high tenacity Alcoa section bar comprises the following steps：
(1) dispensing and melting：Aluminium ingot, zirconium ingot, boron ingot, magnesium ingot, nickel ingot are added in smelting furnace, mineral aggregate is warming up to and melts completely
Change, 30min is incubated at 760 DEG C, add MgCl2, be warming up to 990 DEG C, then add titanium and tantalum, after metal melts completely,
The MgCl2 on aluminium liquid surface is removed, and it is ultrasonically treated to molten metal progress, and except removing dross, the MgCl2 additions are total aluminium
Measure the 0.1% of weight；
(2) 470 DEG C are cooled to the molten metal of step (1), then cast under vacuo, obtain aluminium alloy cast ingot；
(3) aluminium alloy cast ingot is incubated 2h at 160 DEG C, then heats to 515 DEG C, be incubated 4h, then aluminium alloy is put into
Extrusion forming is carried out in extrusion barrel, the extrusion forming process is that extrusion coefficient controls into 96, and extrusion speed is 3.8m/min；
(4) section bar for obtaining step (3) carries out solution treatment and artificial aging is handled, and the solid solution treatment process is temperature
490 DEG C of degree, soaking time 2h, the temperature of come out of the stove after the completion of insulation water quenching or oil quenching to part of quenching is 50 DEG C；At the artificial aging
Science and engineering skill is carries out timeliness in the range of 155 DEG C, and aging time is 10.5h.
Embodiment 4
A kind of high tenacity Alcoa section bar, it is by weight percentage, described on the basis of the total amount of aluminium alloy extrusions
High tenacity Alcoa section bar contains following element：Zn 1.17%, Zr 0.008%, B 0.89%, Mg 1.25%, Ni
1.21%, Cu 0.08%, Ti 0.26%, Ta 0.005%, trace element 0.01%, remaining is Al and inevitably miscellaneous
B, Ti, Ta overall content are 1.155% in matter, the aluminium alloy, wherein, the weight ratio of the Mg and Ti are 1：0.21；
The preparation technology of described high tenacity Alcoa section bar comprises the following steps：
(1) dispensing and melting：Aluminium ingot, zirconium ingot, boron ingot, magnesium ingot, nickel ingot are added in smelting furnace, mineral aggregate is warming up to and melts completely
Change, 30min is incubated at 750 DEG C, add NaCl, be warming up to 980 DEG C, then add titanium and tantalum, after metal melts completely, remove
The NaCl gone on aluminium liquid surface, and it is ultrasonically treated to molten metal progress, and except removing dross, the NaCl additions are whole alumiunum amount weight
The 0.2% of amount；
(2) 450 DEG C are cooled to the molten metal of step (1), then cast under vacuo, obtain aluminium alloy cast ingot；
(3) aluminium alloy cast ingot is incubated 1h at 150 DEG C, then heats to 510 DEG C, be incubated 1h, then aluminium alloy is put into
Extrusion forming is carried out in extrusion barrel, the extrusion forming process is that extrusion coefficient controls into 96, and extrusion speed is 3.5m/min；
(4) section bar for obtaining step (3) carries out solution treatment and artificial aging is handled, and the solid solution treatment process is temperature
480 DEG C of degree, soaking time 1h, the temperature of come out of the stove after the completion of insulation water quenching or oil quenching to part of quenching is 10 DEG C；At the artificial aging
Science and engineering skill is carries out timeliness in the range of 150 DEG C, and aging time is 10.5h.
Embodiment 5
A kind of high tenacity Alcoa section bar, it is by weight percentage, described on the basis of the total amount of aluminium alloy extrusions
High tenacity Alcoa section bar contains following element：Zn 3.48%, Zr 0.21%, B 1.75%, Mg 3.71%, Ni
3.81%, Cu 0.36%, Ti 0.84%, Ta 0.12%, trace element 0.03%, remaining is Al and inevitably miscellaneous
B, Ti, Ta overall content are 2.71% in matter, the aluminium alloy, wherein, the weight ratio of the Mg and Ti are 1：0.23；
The preparation technology of described high tenacity Alcoa section bar comprises the following steps：
(1) dispensing and melting：Aluminium ingot, zirconium ingot, boron ingot, magnesium ingot, nickel ingot are added in smelting furnace, mineral aggregate is warming up to and melts completely
Change, 40min is incubated at 760 DEG C, add Na3AlF6, be warming up to 980 DEG C, then add titanium and tantalum, treat that metal melts completely
Afterwards, the Na3AlF6 on aluminium liquid surface is removed, and it is ultrasonically treated to molten metal progress, and except removing dross, the Na3AlF6 is added
Measure as the 0.2% of whole alumiunum amount weight；
(2) 470 DEG C are cooled to the molten metal of step (1), then cast under vacuo, obtain aluminium alloy cast ingot；
(3) aluminium alloy cast ingot is incubated 2h at 180 DEG C, then heats to 520 DEG C, be incubated 5h, then aluminium alloy is put into
Extrusion forming is carried out in extrusion barrel, the extrusion forming process is that extrusion coefficient controls into 97, and extrusion speed is 4.5m/min；
(4) section bar for obtaining step (3) carries out solution treatment and artificial aging is handled, and the solid solution treatment process is temperature
510 DEG C of degree, soaking time 12h, the temperature of come out of the stove after the completion of insulation water quenching or oil quenching to part of quenching is 80 DEG C；The artificial aging
Handling process is carries out timeliness in the range of 155 DEG C, and aging time is 10.5h.
Comparative example 1
A kind of high tenacity Alcoa section bar, it is by weight percentage, described on the basis of the total amount of aluminium alloy extrusions
High tenacity Alcoa section bar contains following element：Zn 0.34%, Zr 0.002%, B 0.45%, Mg 1.22%, Ni
1.20%, Cu 0.08%, Ti 0.26%, Ta 0.005%, trace element 0.01%, remaining is Al and inevitably miscellaneous
B, Ti, Ta overall content are 0.715% in matter, the aluminium alloy, wherein, the weight ratio of the Mg and Ti are 1：0.21；
The preparation technology of described high tenacity Alcoa section bar comprises the following steps：
(1) dispensing and melting：Aluminium ingot, zirconium ingot, boron ingot, magnesium ingot, nickel ingot are added in smelting furnace, mineral aggregate is warming up to and melts completely
Change, 35min is incubated at 750 DEG C, add NaCl, be warming up to 990 DEG C, then add titanium and tantalum, after metal melts completely, remove
The NaCl gone on aluminium liquid surface, and it is ultrasonically treated to molten metal progress, and except removing dross, the NaCl additions are whole alumiunum amount weight
The 0.1% of amount；
(2) 460 DEG C are cooled to the molten metal of step (1), then cast under vacuo, obtain aluminium alloy cast ingot；
(3) aluminium alloy cast ingot is incubated 1h at 160 DEG C, then heats to 510 DEG C, be incubated 2h, then aluminium alloy is put into
Extrusion forming is carried out in extrusion barrel, the extrusion forming process is that extrusion coefficient controls into 96, and extrusion speed is 3.6m/min；
(4) section bar for obtaining step (3) carries out solution treatment and artificial aging is handled, and the solid solution treatment process is temperature
490 DEG C of degree, soaking time 2h, the temperature of come out of the stove after the completion of insulation water quenching or oil quenching to part of quenching is 60 DEG C；At the artificial aging
Science and engineering skill is carries out timeliness in the range of 150 DEG C, and aging time is 10h.
Comparative example 2
A kind of high tenacity Alcoa section bar, it is by weight percentage, described on the basis of the total amount of aluminium alloy extrusions
High tenacity Alcoa section bar contains following element：Zn 0.34%, Zr 0.43%, B 0.23%, Mg 3.71%, Ni
1.2%, Cu 0.08%, Ti 0.84%, Ta 0.12%, trace element 0.03%, remaining is Al and inevitable impurity,
B, Ti, Ta overall content are 1.19% in the aluminium alloy, wherein, the weight ratio of the Mg and Ti are 1：0.23；
The preparation technology of described high tenacity Alcoa section bar comprises the following steps：
(1) dispensing and melting：Aluminium ingot, zirconium ingot, boron ingot, magnesium ingot, nickel ingot are added in smelting furnace, mineral aggregate is warming up to and melts completely
Change, 30min is incubated at 755 DEG C, add Na3AlF6, be warming up to 990 DEG C, then add titanium and tantalum, treat that metal melts completely
Afterwards, the Na3AlF6 on aluminium liquid surface is removed, and it is ultrasonically treated to molten metal progress, and except removing dross, the Na3AlF6 is added
Measure as the 0.1% of whole alumiunum amount weight；
(2) 450 DEG C are cooled to the molten metal of step (1), then cast under vacuo, obtain aluminium alloy cast ingot；
(3) aluminium alloy cast ingot is incubated 1h at 150 DEG C, then heats to 515 DEG C, be incubated 2h, then aluminium alloy is put into
Extrusion forming is carried out in extrusion barrel, the extrusion forming process is that extrusion coefficient controls into 96, and extrusion speed is 3.6m/min；
(4) section bar for obtaining step (3) carries out solution treatment and artificial aging is handled, and the solid solution treatment process is temperature
490 DEG C of degree, soaking time 4h, the temperature of come out of the stove after the completion of insulation water quenching or oil quenching to part of quenching is 50 DEG C；At the artificial aging
Science and engineering skill is carries out timeliness in the range of 150 DEG C, and aging time is 10h.
The embodiment 1-5 of table 1, the correlated performance of comparative example 1-2 rods and bars of aluminium alloy
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., all should be contained within protection scope of the present invention.
Claims (9)
1. a kind of high tenacity Alcoa section bar, it is characterised in that on the basis of the total amount of aluminium alloy extrusions, by weight percentage
Than meter, the high tenacity Alcoa section bar contains following element：Zn 1.17~3.48%, Zr 0.008~0.21%, B
0.89~1.75%, Mg 1.25~3.71%, Ni 1.21~3.81%, Cu 0.08~0.36%, Ti 0.26~0.84%,
Ta 0.005~0.12%, trace element 0.01~0.03%, remaining is Al and inevitable impurity.
2. high tenacity Alcoa section bar according to claim 1, wherein, on the basis of the total amount of aluminium alloy extrusions,
By weight percentage, the high tenacity Alcoa section bar contains following element：Zn 1.58~2.96%, Zr 0.012
~0.085%, B 0.92~1.28%, Mg 2.11~5.74%, Ni 1.5~3.26%, Cu 0.08~0.36%, Ti
0.35~0.62%, Ta 0.008~0.1%, trace element 0.01~0.03%, remaining is Al and inevitable impurity.
3. high tenacity Alcoa section bar according to claim 1 or 2, wherein, using the total amount of aluminium alloy extrusions as base
Standard, by weight percentage, B, Ti, Ta overall content are 1.35~2% in the aluminium alloy.
4. high tenacity Alcoa section bar according to claim 3, wherein, the weight ratio of the Mg and Ti are 1：(0.1
~0.3).
5. high tenacity Alcoa section bar according to claim 4, wherein, the high tenacity Alcoa section bar prolongs
It is 6.3~9.8% to stretch rate, and yield strength is 682~850MPa, and tensile strength is 420~590MPa.
6. a kind of preparation technology of high tenacity Alcoa section bar according to Claims 1 to 5 any one, its feature
It is, comprises the following steps：
(1) dispensing and melting：Aluminium ingot, zirconium ingot, boron ingot, magnesium ingot, nickel ingot are added in smelting furnace, mineral aggregate is warming up to and melts completely,
30~40min is incubated at 750~760 DEG C, refining agent is added, is warming up to 980~1000 DEG C, titanium and tantalum is then added, treats gold
After category melts completely, the refining agent on aluminium liquid surface is removed, and it is ultrasonically treated to molten metal progress, except removing dross；
(2) 450~470 DEG C are cooled to the molten metal of step (1), then cast under vacuo, obtain aluminium alloy cast ingot；
(3) aluminium alloy cast ingot is incubated 1~2h at 150~180 DEG C, then heats to 510~520 DEG C, be incubated 1~5h, then
Aluminium alloy is put into extrusion barrel and carries out extrusion forming；
(4) section bar for obtaining step (3) carries out solution treatment and artificial aging is handled.
7. the preparation technology of the high tenacity Alcoa section bar according to right will go 6, wherein, it is described in step (1)
Refining agent addition is the 0.1-0.2% of whole alumiunum amount weight, and the refining agent is NaCl, Na3AlF6、MgCl2、NaF、Na2SiF6、
Na2CO3And AlF3At least one of.
8. the preparation technology of high tenacity Alcoa section bar according to claim 6, wherein, the extrusion forming process
96~97 are controlled into for extrusion coefficient, extrusion speed is 3.5m/min~4.5m/min.
9. the preparation technology of the high tenacity Alcoa section bar according to any one in claim 6~8, wherein, institute
Solid solution treatment process is stated for 480~510 DEG C of temperature, 1~12h of soaking time, come out of the stove after the completion of insulation water quenching or oil quenching are to part of quenching
Temperature be 10~80 DEG C；The artificial aging handling process is to carry out timeliness, aging time in the range of 150 DEG C~155 DEG C
For 10h~10.5h.
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| CN108220842A (en) * | 2018-01-09 | 2018-06-29 | 广东和胜工业铝材股份有限公司 | The preparation method of 6061 aluminium alloy grained materials |
| CN112676371A (en) * | 2021-01-07 | 2021-04-20 | 安徽鑫发铝业有限公司 | Preparation method of high-strength and high-toughness ultrathin hollow high-speed rail aluminum profile |
| CN113637882A (en) * | 2021-08-13 | 2021-11-12 | 贵州电网有限责任公司 | Aluminum alloy corrosion-resistant structural member material for electric power facilities and preparation method thereof |
| TWI765596B (en) * | 2020-03-11 | 2022-05-21 | 日商昭和電工股份有限公司 | Corrosion Resistant Components |
| CN114591656A (en) * | 2021-12-23 | 2022-06-07 | 常州市凯宏铝业有限公司 | High-toughness corrosion-resistant aluminum alloy section and preparation process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108220842A (en) * | 2018-01-09 | 2018-06-29 | 广东和胜工业铝材股份有限公司 | The preparation method of 6061 aluminium alloy grained materials |
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| CN112676371A (en) * | 2021-01-07 | 2021-04-20 | 安徽鑫发铝业有限公司 | Preparation method of high-strength and high-toughness ultrathin hollow high-speed rail aluminum profile |
| CN113637882A (en) * | 2021-08-13 | 2021-11-12 | 贵州电网有限责任公司 | Aluminum alloy corrosion-resistant structural member material for electric power facilities and preparation method thereof |
| CN114591656A (en) * | 2021-12-23 | 2022-06-07 | 常州市凯宏铝业有限公司 | High-toughness corrosion-resistant aluminum alloy section and preparation process thereof |
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