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A Thermomechanical Treatment Process for Improving the Comprehensive Properties of Aluminum Alloys

A thermomechanical treatment and comprehensive performance technology, which is applied in the heat treatment process of aluminum alloy and in the field of thermomechanical treatment process to improve the comprehensive performance of aluminum alloy, and can solve the problem that the technical route cannot meet the requirements of aluminum alloy large structural parts and cannot realize aluminum alloy large structural parts. Production demand, large damage to production equipment, etc., to achieve the practical application value of large industries, improve the matching of strength and plasticity, and improve the effect of corrosion resistance

Active Publication Date: 2018-04-03
HUNAN UNIV OF HUMANITIES SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods are limited to the processing of small-sized samples with complex procedures and high equipment requirements, and cannot meet the production requirements of large aluminum alloy components used in large components, or carry out extremely dangerous production operations in liquid nitrogen temperature environments. The damage to the production equipment is relatively large, and the production cost will further increase
All in all, these methods have poor operability in actual industrial applications, and their technical routes are far from meeting the requirements of aluminum alloy large structural parts

Method used

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  • A Thermomechanical Treatment Process for Improving the Comprehensive Properties of Aluminum Alloys
  • A Thermomechanical Treatment Process for Improving the Comprehensive Properties of Aluminum Alloys

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The sample is an Al-1.0Mg-1.0Si-0.9Cu-0.2Zn (mass fraction%) aluminum alloy cold-rolled plate with a thickness of 10.0mm. Put the sample into a salt-bath furnace at 520-530°C for solution treatment, holding time for 1 hour; carry out warm rolling with a deformation of 50% at 300°C, and conduct continuous rolling with a deformation of 60% immediately after warm rolling The thin plate is obtained; the obtained thin plate is subjected to solution water quenching treatment at 520-530°C, and the holding time is 1 hour; then it is put into an aging box for pre-aging treatment, the aging temperature is 100°C, and the aging time is 16h; The conditions of asymmetric rolling are as follows: the speed ratio is 1.1, the deformation is 5%, and the deformation temperature is room temperature; finally, natural aging is carried out for 15 days, and tensile samples are made according to GB228-76. The parameters of yield strength, tensile strength and elongation of the Al-1.0Mg-1.0Si-0.9...

Embodiment 2

[0036] The sample is an Al-1.0Mg-1.0Si-0.9Cu-0.2Zn (mass fraction%) aluminum alloy cold-rolled plate with a thickness of 10.0 mm. Put the sample into a salt-bath furnace at 520-530°C for solution treatment, holding time for 1 hour; carry out warm rolling with a deformation of 50% at 300°C, and conduct continuous rolling with a deformation of 60% immediately after warm rolling The thin plate is obtained; the obtained thin plate is subjected to solid solution water quenching treatment at 520-530°C, and the holding time is 1 hour; then it is put into an aging box for pre-aging treatment, the aging temperature is 60°C, and the aging time is 100h; Rolling, the conditions of asymmetric rolling are: deformation temperature 150°C, different velocity ratio 1.3, deformation amount ~10%; finally carry out artificial aging at 60°C-72h, and make tensile samples according to GB228-76. The parameters of yield strength, tensile strength and elongation of the Al-1.0Mg-1.0Si-0.9Cu-0.2Zn (mass f...

Embodiment 3

[0038] The sample is an Al-1.0Mg-1.0Si-0.9Cu-0.2Zn (mass fraction%) aluminum alloy cold-rolled plate with a thickness of 10.0mm. Put the sample into a salt-bath furnace at 520-530°C for solution treatment, holding time for 1 hour; carry out warm rolling with a deformation of 50% at 300°C, and conduct continuous rolling with a deformation of 60% immediately after warm rolling The thin plate is obtained; the obtained thin plate is subjected to solid solution water quenching treatment at 520-530°C, and the holding time is 1 hour; then it is put into an aging box for pre-aging treatment, the aging temperature is 120°C, and the aging time is 10h; Rolling treatment, the conditions of asymmetric rolling are: deformation temperature 250°C, roll surface speed ratio 1.8, deformation amount ~ 20%; finally carry out artificial aging at 130°C-4h, and make tensile samples according to GB228-76 . The parameters of yield strength, tensile strength and elongation of the Al-1.0Mg-1.0Si-0.9Cu-0...

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Abstract

The invention relates to a heat treatment technology for an aluminum alloy, in particular to a heat mechanical treatment technology for improving comprehensive performance of the aluminum alloy, and belongs to the technical field of nonferrous metal heat treatment technologies. According to the technology, after an aluminum-magnesium-silicon alloy is subjected to solid solution water quenching treatment, rolling is conducted; the rolled aluminum-magnesium-silicon alloy is obtained; then, the material is sequentially subjected to solid solution water quenching treatment, pre-aging treatment, special deformation treatment and secondary aging treatment; and a finished product with excellent comprehensive performance is obtained. The special deformation treatment is asymmetric rolling. The method is simple, operation is safe and convenient, the obtained product is excellent in performance, and industrial production and application are easy.

Description

technical field [0001] The invention relates to a heat treatment process for aluminum alloys, in particular to a thermomechanical treatment process for improving the comprehensive performance of aluminum alloys; it belongs to the technical field of nonferrous metal heat treatment processes. Background technique [0002] Improving the strength of materials has always been a core issue in materials research. The strengthening of materials is often accompanied by a sharp decrease in plasticity or toughness, while the strength of high plasticity and toughness materials is often very low. For a long time, the "inverted relationship" of strength and toughness of this material has become a bottleneck restricting the development of materials. In order to enable aluminum alloys to further meet the requirements of higher comprehensive performance, the improvement of the comprehensive performance of aluminum alloys has become a hot spot in the aluminum alloy industry in recent years. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/047C22F1/043
CPCC22F1/043C22F1/047
Inventor 陈志国任杰克
Owner HUNAN UNIV OF HUMANITIES SCI & TECH
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