CN116356227A - Heat treatment process of aluminum alloy suitable for automobile parts - Google Patents
Heat treatment process of aluminum alloy suitable for automobile parts Download PDFInfo
- Publication number
- CN116356227A CN116356227A CN202111611101.9A CN202111611101A CN116356227A CN 116356227 A CN116356227 A CN 116356227A CN 202111611101 A CN202111611101 A CN 202111611101A CN 116356227 A CN116356227 A CN 116356227A
- Authority
- CN
- China
- Prior art keywords
- aluminum alloy
- treatment
- heat treatment
- cold rolling
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 59
- 238000010438 heat treatment Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000005097 cold rolling Methods 0.000 claims abstract description 23
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000000137 annealing Methods 0.000 claims abstract description 13
- 238000010791 quenching Methods 0.000 claims abstract description 9
- 230000000171 quenching effect Effects 0.000 claims abstract description 9
- 230000032683 aging Effects 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000006104 solid solution Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0075—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rods of limited length
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
Abstract
The invention relates to a heat treatment process of an aluminum alloy suitable for automobile parts, which comprises the steps of sequentially carrying out solution treatment, quenching treatment, cold rolling treatment and aging treatment on the aluminum alloy, and further comprises the following steps: step 1: heating the aluminum bar; step 2: continuously extruding and cold rolling the aluminum bar after the heating treatment; step 3: rapidly cooling the extruded and cold-rolled aluminum bar to the atmospheric temperature; step 4: heating the aluminum alloy subjected to cold rolling treatment in an intermediate frequency furnace; step 5: placing the aluminum alloy in a high-temperature environment of 320-350 ℃ for secondary heat treatment; step 6: then, in the step 5, the aluminum alloy is subjected to secondary cold rolling treatment in an ultralow temperature environment of 200-250 ℃ below zero; step 7: carrying out low-temperature annealing treatment after the secondary cold rolling treatment; step 8: and quenching the aluminum alloy. The invention can improve the strength of the aluminum alloy.
Description
Technical Field
The invention relates to a heat treatment process of an aluminum alloy suitable for automobile parts.
Background
Besides the advantages of small density, good electrical conductivity, high thermal conductivity and corrosion resistance, the aluminum alloy also has the characteristics of high specific strength and specific rigidity, good processing and forming performances and the like, so that the aluminum alloy can be used as a structural material to greatly reduce the weight of a product and increase the structural stability, and can be widely applied to production. Particularly, 6000 series aluminum alloy used as the automobile body plate not only can lighten the weight of the automobile body, but also can obviously reduce the energy consumption of the automobile. It can be seen that aluminum alloys will replace steel materials and become the main materials in the future automotive industry.
However, aluminum alloys, while having higher strength, have lower ductility at break, which limits their use. The conventional heat treatment process, although improving the fracture ductility of the aluminum alloy to some extent, sacrifices a certain strength of the aluminum alloy. In the traditional heat treatment technology, T4 underageing treatment is carried out to naturally age to a basically stable state after solid solution treatment, and the treatment method comprises the steps of preserving heat for 2 hours at the solid solution temperature of 510 ℃, then quenching with water to room temperature, and then naturally aging for 96 hours. The treatment method is characterized in that a soluble phase is dissolved by heating and preserving heat, and then quenched, so that a large amount of strengthening phases are dissolved in an alpha-solid solution to obtain a supersaturated solid solution. Although the aluminum alloy heat-treated by this method has a high fracture ductility, it has a low strength because of the low density of the precipitated phases and the small size, and thus is easily cut by dislocations.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a heat treatment process of aluminum alloy suitable for automobile parts.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the heat treatment process of the aluminum alloy suitable for the automobile parts comprises the steps of sequentially carrying out solution treatment, quenching treatment, cold rolling treatment and aging treatment on the aluminum alloy, and further comprises the following steps:
step 1: heating the aluminum bar, and placing the aluminum bar in a high-temperature environment of 600-650 ℃ for the first time, wherein the heat treatment time is 3-3.5 hours;
step 2: continuously extruding the aluminum bar after the heat treatment, and carrying out cold rolling treatment on the aluminum alloy plate at ultralow temperature of minus 150 ℃ to minus 165 ℃ at the same time under the pressure of 51-55% in the next pass;
step 3: rapidly cooling the extruded and cold-rolled aluminum bar to the atmospheric temperature;
step 4: heating the aluminum alloy subjected to cold rolling treatment in an intermediate frequency furnace, and performing high-temperature annealing treatment at the same time;
step 5: placing the aluminum alloy in a high-temperature environment of 320-350 ℃ for secondary heat treatment, wherein the treatment time is 45 minutes-1 hour;
step 6: then, in the step 5, the aluminum alloy is subjected to secondary cold rolling treatment in an ultralow temperature environment of 200-250 ℃ below zero;
step 7: carrying out low-temperature annealing treatment after the secondary cold rolling treatment;
step 8: and quenching the aluminum alloy.
Preferably, the heat treatment process of the aluminum alloy suitable for the automobile parts has the single deformation amount of 15-20% and the total deformation amount of 80-90%.
Preferably, the heat treatment process of the aluminum alloy suitable for the automobile parts is characterized in that the aluminum alloy subjected to ultralow-temperature cold rolling treatment is kept for 5-6 hours in an environment of 250-280 ℃ below zero during the low-temperature annealing treatment.
Preferably, the heat treatment process of the aluminum alloy suitable for the automobile parts comprises the step of preserving the aluminum alloy subjected to the low-temperature annealing treatment at the temperature of 120-160 ℃ for 7-9 hours.
Preferably, the heat treatment process of the aluminum alloy suitable for the automobile parts is an alloy plate comprising 97.45-98.45 wt% of Al, 0.25-0.45 wt% of Mn and 0.36-0.42 wt% of Fe.
By means of the scheme, the invention has at least the following advantages:
the invention can improve the strength and fracture ductility of the aluminum alloy, and simultaneously has simple process and convenient implementation and operation.
The foregoing description is merely an overview of the present invention and may be practiced according to the teachings of the present invention in order that the present invention may be more clearly understood.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments.
Examples
The heat treatment process of the aluminum alloy suitable for the automobile parts comprises the steps of sequentially carrying out solution treatment, quenching treatment, cold rolling treatment and aging treatment on the aluminum alloy, and is characterized by further comprising the following steps:
step 1: heating the aluminum bar, and placing the aluminum bar in a high-temperature environment of 600-650 ℃ for the first time, wherein the heat treatment time is 3-3.5 hours;
step 2: continuously extruding the aluminum bar after the heat treatment, and carrying out cold rolling treatment on the aluminum alloy plate at ultralow temperature of minus 150 ℃ to minus 165 ℃ at the same time under the pressure of 51-55% in the next pass;
step 3: rapidly cooling the extruded and cold-rolled aluminum bar to the atmospheric temperature;
step 4: heating the aluminum alloy subjected to cold rolling treatment in an intermediate frequency furnace, and performing high-temperature annealing treatment at the same time;
step 5: placing the aluminum alloy in a high-temperature environment of 320-350 ℃ for secondary heat treatment, wherein the treatment time is 45 minutes-1 hour;
step 6: then, in the step 5, the aluminum alloy is subjected to secondary cold rolling treatment in an ultralow temperature environment of 200-250 ℃ below zero;
step 7: carrying out low-temperature annealing treatment after the secondary cold rolling treatment;
step 8: and quenching the aluminum alloy.
The single deformation of the aluminum alloy is 15-20% and the total deformation is 80-90%.
The aluminum alloy subjected to ultralow temperature cold rolling treatment is kept for 5-6 hours in an environment of 250-280 ℃ below zero during low temperature annealing treatment.
The aging treatment process comprises the step of preserving the temperature of the aluminum alloy subjected to the low-temperature annealing treatment at the temperature of 120-160 ℃ for 7-9 hours.
The aluminum alloy in the invention is an alloy plate comprising 97.45-98.45 wt% of Al, 0.25-0.45 wt% of Mn and 0.36-0.42 wt% of Fe.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and it should be noted that it is possible for those skilled in the art to make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (5)
1. The heat treatment process of the aluminum alloy suitable for the automobile parts comprises the steps of sequentially carrying out solution treatment, quenching treatment, cold rolling treatment and aging treatment on the aluminum alloy, and is characterized by further comprising the following steps:
step 1: heating the aluminum bar, and placing the aluminum bar in a high-temperature environment of 600-650 ℃ for the first time, wherein the heat treatment time is 3-3.5 hours;
step 2: continuously extruding the aluminum bar after the heat treatment, and carrying out cold rolling treatment on the aluminum alloy plate at ultralow temperature of minus 150 ℃ to minus 165 ℃ at the same time under the pressure of 51-55% in the next pass;
step 3: rapidly cooling the extruded and cold-rolled aluminum bar to the atmospheric temperature;
step 4: heating the aluminum alloy subjected to cold rolling treatment in an intermediate frequency furnace, and performing high-temperature annealing treatment at the same time;
step 5: placing the aluminum alloy in a high-temperature environment of 320-350 ℃ for secondary heat treatment, wherein the treatment time is 45 minutes-1 hour;
step 6: then, in the step 5, the aluminum alloy is subjected to secondary cold rolling treatment in an ultralow temperature environment of 200-250 ℃ below zero;
step 7: carrying out low-temperature annealing treatment after the secondary cold rolling treatment;
step 8: and quenching the aluminum alloy.
2. A heat treatment process for an aluminum alloy suitable for automotive parts according to claim 1, characterized in that: the single deformation of the aluminum alloy is 15-20%, and the total deformation is 80-90%.
3. A heat treatment process for an aluminum alloy suitable for automotive parts according to claim 1, characterized in that: the aluminum alloy subjected to ultralow temperature cold rolling treatment is kept for 5-6 hours in an environment of 250-280 ℃ below zero during the low temperature annealing treatment.
4. A heat treatment process for an aluminum alloy suitable for automotive parts according to claim 1, characterized in that: the aging treatment process comprises the step of preserving the temperature of the aluminum alloy subjected to the low-temperature annealing treatment at the temperature of 120-160 ℃ for 7-9 hours.
5. A heat treatment process for an aluminum alloy suitable for automotive parts according to claim 1, characterized in that: the aluminum alloy is an alloy plate comprising 97.45 to 98.45 weight percent of Al, 0.25 to 0.45 weight percent of Mn and 0.36 to 0.42 weight percent of Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111611101.9A CN116356227A (en) | 2021-12-27 | 2021-12-27 | Heat treatment process of aluminum alloy suitable for automobile parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111611101.9A CN116356227A (en) | 2021-12-27 | 2021-12-27 | Heat treatment process of aluminum alloy suitable for automobile parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116356227A true CN116356227A (en) | 2023-06-30 |
Family
ID=86935567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111611101.9A Pending CN116356227A (en) | 2021-12-27 | 2021-12-27 | Heat treatment process of aluminum alloy suitable for automobile parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116356227A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463453A (en) * | 2007-12-20 | 2009-06-24 | 比亚迪股份有限公司 | Heat treatment method for aluminum alloy |
| CN103305780A (en) * | 2012-03-16 | 2013-09-18 | 春兴铸造(苏州工业园区)有限公司 | Heat treatment method for aerial aluminum alloy |
| CN111549266A (en) * | 2020-05-27 | 2020-08-18 | 北京科技大学 | Tissue regulation and control method for improving forming performance of aluminum alloy plate of vehicle body structure |
| WO2021008428A1 (en) * | 2019-07-17 | 2021-01-21 | 中南大学 | Ultrahigh-strength aluminum-lithium alloy and preparation method therefor |
| US20210156006A1 (en) * | 2019-06-17 | 2021-05-27 | Central South University | Method for processing highly alloyed aluminum alloy sheet with high rolling yield |
-
2021
- 2021-12-27 CN CN202111611101.9A patent/CN116356227A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463453A (en) * | 2007-12-20 | 2009-06-24 | 比亚迪股份有限公司 | Heat treatment method for aluminum alloy |
| CN103305780A (en) * | 2012-03-16 | 2013-09-18 | 春兴铸造(苏州工业园区)有限公司 | Heat treatment method for aerial aluminum alloy |
| US20210156006A1 (en) * | 2019-06-17 | 2021-05-27 | Central South University | Method for processing highly alloyed aluminum alloy sheet with high rolling yield |
| WO2021008428A1 (en) * | 2019-07-17 | 2021-01-21 | 中南大学 | Ultrahigh-strength aluminum-lithium alloy and preparation method therefor |
| CN111549266A (en) * | 2020-05-27 | 2020-08-18 | 北京科技大学 | Tissue regulation and control method for improving forming performance of aluminum alloy plate of vehicle body structure |
Non-Patent Citations (1)
| Title |
|---|
| 王跃 等: "深冷轧工艺在高性能金属材料制备中的应用", 造纸装备及材料, vol. 27, no. 7, 31 July 2021 (2021-07-31), pages 46 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104911517A (en) | Strain aging method for improving mechanical properties of aluminum alloy | |
| CN109234656B (en) | Pre-deformation heat treatment process for improving strength of metastable β titanium alloy | |
| CN112410691B (en) | Annealing process of aluminum-lithium alloy material | |
| CN114657417B (en) | High-strength plastic titanium alloy suitable for cold deformation processing and preparation method thereof | |
| CN114107834B (en) | High-strength iron-nickel-molybdenum alloy wire and low-cost preparation method thereof | |
| CN111790864A (en) | Forging method for improving oxidation resistance and electric breakdown performance of 6-series alloy | |
| CN109825785B (en) | Preparation method of industrial pure titanium with heterogeneous layered structure | |
| CN111945086B (en) | Forging method for improving anisotropy of 6XXX aluminum alloy forging | |
| CN116356227A (en) | Heat treatment process of aluminum alloy suitable for automobile parts | |
| CN114214582B (en) | High-flexibility copper foil and production method thereof | |
| CN114293120B (en) | Pulse electric field auxiliary heat treatment method for improving plasticity and toughness of titanium alloy | |
| CN111945088B (en) | Heat treatment method of low-alloying Al-Mg-Si alloy | |
| CN115386818A (en) | Thermomechanical treatment method for Al-Cu-Li alloy hot-rolled plate blank | |
| CN111440938B (en) | Annealing strengthening process method for rolling pure tantalum foil | |
| CN114618970A (en) | Forging process for improving strength of thick-section TA15 titanium alloy forging | |
| CN114318161A (en) | Low-temperature high-strain-rate superplastic medium manganese steel and preparation method thereof | |
| CN112553553A (en) | Ti2AlNb alloy cold-rolled foil and preparation method thereof | |
| CN109593998B (en) | 500 MPa-grade low-Cu Mg-free aluminum alloy and preparation method thereof | |
| CN109930078A (en) | A kind of high strength high plasticity hot-rolled medium managese steel and preparation method | |
| CN113957362B (en) | Rolling method of high-performance copper-chromium-zirconium alloy plate | |
| CN115612956B (en) | Cold forming preparation method of high-plasticity metastable beta titanium alloy plate | |
| CN113953427B (en) | 410 steel hot forging forming method | |
| CN107151767A (en) | A kind of synchronous Strengthening and Toughening processing technology of Al Cu Mg alloys | |
| CN115821109A (en) | Preparation process of high-strength high-conductivity metal | |
| CN116590571A (en) | Alpha+beta titanium alloy with high strength and low yield ratio and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |