WO2022160457A1 - Processus de renforcement de traitement thermique destiné à l'alliage coule d'aluminium et de de magnésium et application de celui-ci - Google Patents
Processus de renforcement de traitement thermique destiné à l'alliage coule d'aluminium et de de magnésium et application de celui-ci Download PDFInfo
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- WO2022160457A1 WO2022160457A1 PCT/CN2021/084380 CN2021084380W WO2022160457A1 WO 2022160457 A1 WO2022160457 A1 WO 2022160457A1 CN 2021084380 W CN2021084380 W CN 2021084380W WO 2022160457 A1 WO2022160457 A1 WO 2022160457A1
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- Prior art keywords
- alloy
- aluminum
- treatment
- magnesium
- temperature
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- 239000000956 alloy Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 47
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 43
- 230000008569 process Effects 0.000 title claims abstract description 39
- 238000010438 heat treatment Methods 0.000 title claims abstract description 26
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 23
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 239000011777 magnesium Substances 0.000 title claims abstract description 22
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 22
- 238000005728 strengthening Methods 0.000 title claims abstract description 22
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 53
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 49
- 230000032683 aging Effects 0.000 claims abstract description 28
- 238000000462 isostatic pressing Methods 0.000 claims abstract description 25
- 239000007789 gas Substances 0.000 claims description 24
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 230000003068 static effect Effects 0.000 claims description 16
- 230000001681 protective effect Effects 0.000 claims description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 239000006104 solid solution Substances 0.000 claims description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 4
- 230000002431 foraging effect Effects 0.000 claims description 3
- 229910001234 light alloy Inorganic materials 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 238000011049 filling Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 238000005266 casting Methods 0.000 abstract description 25
- 230000035882 stress Effects 0.000 abstract description 9
- 230000007547 defect Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 2
- 238000001556 precipitation Methods 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
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
- 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
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
-
- 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
- C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
Definitions
- the invention relates to the technical field of heat treatment of non-ferrous metals, in particular to a heat treatment strengthening process of aluminum and magnesium as-cast alloys and its application.
- Aluminum alloys and magnesium alloys are the lightest metal structural materials at present. They have the advantages of low density, high specific strength, and easy forming. They are widely used in aerospace, automotive electronics and other fields. In the automotive field, aluminum alloys and magnesium alloys can be used not only as instrument panel bases, seat frames, steering wheel shafts, gearbox casings, etc., but also in key parts such as engines and car chassis, and have broad application prospects in the automotive field.
- alloy casting is an indispensable key link, and the quality of casting has a significant impact on the engineering parts of aluminum alloy and magnesium alloy. Due to the physical and chemical properties of aluminum alloys and magnesium alloys, casting defects are easily generated, resulting in reduced mechanical properties of castings. For example: (1) During the melting and casting process of aluminum alloys and magnesium alloys, entrainment is very likely to occur, and the buoyancy of the involved nitrogen bubbles and hydrogen bubbles is small, which makes it difficult for a large amount of hydrogen and nitrogen to escape. The form remains in the casting, and the pores will become the source of crack propagation during the service of the casting; (2) The aluminum alloy and magnesium alloy will shrink in volume during the casting process. (3) During the casting process of aluminum alloy and magnesium alloy, due to the inconsistent solidification time of different parts, large residual thermal stress will be generated, and even hot cracking will occur. This problem is especially obvious for castings with complex structures;
- the present invention proposes a heat treatment strengthening process for aluminum and magnesium as-cast alloys and its application.
- This process is suitable for ageing-strengthened aluminum alloys or magnesium alloys.
- One ultra-low temperature treatment, followed by warm isostatic pressing at the alloy solution temperature, followed by a second ultra-low temperature treatment, and finally aging strengthening treatment, can greatly improve the mechanical properties of aluminum and magnesium alloy castings.
- a first aspect of the present invention provides a heat treatment strengthening process of aluminum and magnesium as-cast alloys, which specifically includes:
- the alloy material is taken out from the aging furnace and air-cooled;
- the second aspect of the present invention provides the application of the above-mentioned heat treatment strengthening process of aluminum and magnesium as-cast alloys in the preparation of as-cast alloys.
- the present invention discloses a heat treatment strengthening process for aluminum and magnesium as-cast alloys.
- the aluminum alloy and magnesium alloy are subjected to multiple processes such as primary ultra-low temperature treatment, warm isostatic pressing solution treatment, secondary ultra-low temperature treatment and aging treatment.
- the combined treatment greatly reduces the casting defects such as pores and shrinkage porosity in the aluminum alloy structure, the residual stress, and the precipitation strengthening phase distribution is more dispersed, and the aging strengthening effect is more ideal.
- the strength and elongation of aluminum and magnesium as-cast alloys are obvious. improve.
- the first ultra-low temperature treatment is mainly based on the volume shrinkage effect, which reduces the atomic spacing, shrinks the lattice, reduces the size of hole defects, and even closes some tiny voids directly, laying the foundation for the next warm isostatic pressing treatment;
- the warm isostatic pressing treatment causes plastic flow diffusion inside the casting, bonding and bridging of the microstructure holes, and the as-cast structure is more uniform and dense, and the space occupied by defects such as pores and shrinkage porosity is extremely limited on the macroscopic level, so it will not change.
- the size or shape of the casting is more uniform and dense, and the space occupied by defects such as pores and shrinkage porosity is extremely limited on the macroscopic level, so it will not change.
- the size or shape of the casting is sized or shape of the casting.
- the second ultra-low temperature treatment There are two purposes of the second ultra-low temperature treatment. One is to generate a large internal stress inside the material, which induces a large number of dislocations and sub-crystals. The strength and toughness of the alloy are improved. Second, a large number of supersaturated point defects (vacancies) can be obtained at ultra-low temperature. The interaction between vacancies and solute atoms makes the next aging precipitate more dispersed and the volume fraction increases.
- the aging strengthening is carried out on the basis of the second ultra-low temperature treatment. Since there are more dislocations and vacancies in the microstructure, it is more conducive to the diffusion of solute atoms, and the formed strengthening phase is more dispersed, and the aging strengthening effect is more effective. ideal.
- Figure 1 is a comparison of the tensile properties of the ZL109 as-cast aluminum alloy in Example 1(a) after the treatment of the present invention and the conventional heat treatment in Comparative Example 1(b).
- Figure 2 is a comparison of the tensile properties of the AZ91 as-cast magnesium alloy in Example 2(a) after the treatment of the present invention and the conventional heat treatment in Comparative Example 2(b).
- the present invention proposes a heat treatment strengthening process for aluminum and magnesium as-cast alloys, which specifically includes:
- the alloy material is taken out from the aging furnace and air-cooled.
- the temperature of the cavity is controlled by pumping liquid nitrogen, the temperature control accuracy is ⁇ 1°C, and the cooling rate is controlled at 10-20°C/min, So that the cavity temperature can be adjusted in the range of room temperature to -190 °C;
- the temperature range of the first ultra-low temperature treatment is -120 to -180°C, and the ultra-low temperature treatment time is determined according to the type of alloy. , the treatment time is 5-7h, and when aluminum alloy is used, the treatment time is 6-8h.
- the inert protective gas is argon or nitrogen, and the vacuum degree must be evacuated to below 10 mPa before introducing the inert protective gas;
- the static gas pressure in the step (2), in the process of filling the cavity with the inert protective gas, is first controlled at about 70 MPa, and the required solid solution temperature of the alloy is equal to After stabilization, adjust the static pressure to 100-200MPa;
- the time of the warm isostatic pressing is determined according to the type of alloy.
- the processing time is 9-10h, and when aluminum is used When alloying, the treatment time is 4-5h.
- step (2) the water temperature does not exceed 65°C, and the transfer time does not exceed 20s;
- the cooling rate is controlled at 50-60°C/min
- the temperature of the second ultra-low temperature treatment is -130--190°C
- the treatment time is based on the alloy.
- the treatment time is 15-17h
- the treatment time is 13-15h.
- the aging treatment process of the alloy is reasonably determined according to the corresponding national standards of different grades or relevant literature.
- the second aspect of the present invention provides the application of the above-mentioned heat treatment strengthening process of aluminum and magnesium as-cast alloys in the preparation of as-cast alloys.
- the alloy material is taken out from the aging furnace and air-cooled;
- the alloy material is taken out from the aging furnace and air-cooled;
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
La présente invention concerne un processus de renforcement de traitement thermique destiné à un alliage coulé d'aluminium et de magnésium et une application de celui-ci. L'alliage d'aluminium et l'alliage de magnésium sont soumis à un traitement combiné multiprocessus tels qu'un traitement primaire ultra-basse température, un traitement de solution de pressage isostatique à chaud, un traitement ultra-basse température secondaire et un traitement de vieillissement ; les défauts de coulée tels que des orifices d'air et la porosité de retrait dans une structure d'alliage d'aluminium sont fortement réduits, la tension résiduelle et la distribution de phase de renforcement de précipitation sont plus dispersées et l'effet de renforcement de vieillissement est plus idéal, la résistance et l'allongement de l'alliage coulé d'aluminium et de magnésium sont nettement améliorés. Les étapes de processus sont simples, les paramètres de processus de pressage isostatique à chaud et de traitement ultra-basse température peuvent être ajustés selon différents types d'alliage coulé, les problèmes des orifices d'air, la porosité de retrait, la tension résiduelle et similaire dans le processus de coulée de l'alliage coulé sont efficacement résolus et la microstructure et les propriétés mécaniques de l'alliage coulé d'aluminium et de magnésium sont considérablement améliorées. De plus, les étapes de processus sont simples, les paramètres de processus de pressage isostatique à chaud et de traitement ultra-basse température peuvent être ajustés selon différents types d'alliage coulé, les problèmes des orifices d'air, la porosité de retrait, la tension résiduelle et similaire dans le processus de coulée de l'alliage coulé sont efficacement résolus et la microstructure et les propriétés mécaniques de l'alliage coulé d'aluminium et de magnésium sont considérablement améliorées. Le procédé de renforcement du traitement thermique présente une importance importante pour étendre l'application industrielle de l'alliage coulé d'aluminium et de magnésium.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110126975.9 | 2021-01-29 | ||
| CN202110126975.9A CN112962038B (zh) | 2021-01-29 | 2021-01-29 | 一种铝、镁铸态合金的热处理强化工艺及其应用 |
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| Publication Number | Publication Date |
|---|---|
| WO2022160457A1 true WO2022160457A1 (fr) | 2022-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/CN2021/084380 WO2022160457A1 (fr) | 2021-01-29 | 2021-03-31 | Processus de renforcement de traitement thermique destiné à l'alliage coule d'aluminium et de de magnésium et application de celui-ci |
Country Status (2)
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| CN (1) | CN112962038B (fr) |
| WO (1) | WO2022160457A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115846403A (zh) * | 2022-09-23 | 2023-03-28 | 贵州大学 | 一种具有大量层错和形变纳米孪晶的长棒状相组织的钴基合金及其制备方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114150130B (zh) * | 2021-12-01 | 2023-09-08 | 宁波江丰热等静压技术有限公司 | 一种热等静压吊具用板材的热处理方法及应用 |
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| EP2581466B1 (fr) * | 2011-10-14 | 2015-04-01 | voestalpine Metal Forming GmbH | Procédé de fabrication d'un élément de formage |
| CN108796313A (zh) * | 2018-05-24 | 2018-11-13 | 江苏大学 | 一种Al-Mg-Si系变形铝合金及其强韧化处理方法 |
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| BRPI0519400A2 (pt) * | 2004-12-23 | 2009-01-20 | Commw Scient Ind Res Org | tratamento tÉrmico de fundiÇÕes sob pressço em alta pressço de liga de alumÍnio |
| US8168015B2 (en) * | 2008-10-23 | 2012-05-01 | GM Global Technology Operations LLC | Direct quench heat treatment for aluminum alloy castings |
| CN102605304A (zh) * | 2012-04-17 | 2012-07-25 | 辽宁忠旺集团有限公司 | 铝合金挤压型材晶粒细化工艺方法 |
| CN103668014A (zh) * | 2013-12-10 | 2014-03-26 | 常熟柏科汽车零件再制造有限公司 | 起动机铝合金外壳的深冷处理工艺 |
| CN107419148A (zh) * | 2017-05-05 | 2017-12-01 | 安徽彩晶光电有限公司 | 用于液晶电视支架的复合铝合金 |
| CN111057977A (zh) * | 2019-12-31 | 2020-04-24 | 中南大学 | 提高6016铝合金冷轧板强度的深冷处理工艺及其装置 |
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- 2021-01-29 CN CN202110126975.9A patent/CN112962038B/zh active Active
- 2021-03-31 WO PCT/CN2021/084380 patent/WO2022160457A1/fr active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2581466B1 (fr) * | 2011-10-14 | 2015-04-01 | voestalpine Metal Forming GmbH | Procédé de fabrication d'un élément de formage |
| CN108796313A (zh) * | 2018-05-24 | 2018-11-13 | 江苏大学 | 一种Al-Mg-Si系变形铝合金及其强韧化处理方法 |
| CN109022974A (zh) * | 2018-08-24 | 2018-12-18 | 重庆元和利泰镁合金制造有限公司 | 一种镁合金电机外壳制作方法及电机外壳 |
| CN109252074A (zh) * | 2018-11-20 | 2019-01-22 | 沈左红 | 一种汽车用高韧性高强度铝合金轮毂及其制造方法 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115846403A (zh) * | 2022-09-23 | 2023-03-28 | 贵州大学 | 一种具有大量层错和形变纳米孪晶的长棒状相组织的钴基合金及其制备方法 |
| CN115846403B (zh) * | 2022-09-23 | 2023-08-15 | 贵州大学 | 一种具有大量层错和形变纳米孪晶的长棒状相组织的钴基合金及其制备方法 |
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| Publication number | Publication date |
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| CN112962038A (zh) | 2021-06-15 |
| CN112962038B (zh) | 2022-03-04 |
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