Effects of Solid Solution Treatment on Microstructure and Mechanical Properties of 2A14 Aluminum Alloy Cold Rolled Sheet

Wang Huachun; Huang Shuping; He Kezhun; Zhang Hang; Huang Fei

doi:10.15980/j.tzzz.2020.07.008

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Effects of Solid Solution Treatment on Microstructure and Mechanical Properties of 2A14 Aluminum Alloy Cold Rolled Sheet
Vol. 40, Issue 7, Pages: 731-734(2020)
Published： 2020 ，
DOI： 10.15980/j.tzzz.2020.07.008

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[1]王华春,黄淑萍,何克准,张航,黄飞.固溶处理对2A14铝合金冷轧板组织与性能的影响[J].特种铸造及有色合金,2020,40(07):731-734.

Wang Huachun, Huang Shuping, He Kezhun, et al. Effects of Solid Solution Treatment on Microstructure and Mechanical Properties of 2A14 Aluminum Alloy Cold Rolled Sheet. [J]. Special Casting & Nonferrous Alloys 40(7):731-734(2020)
[1]王华春,黄淑萍,何克准,张航,黄飞.固溶处理对2A14铝合金冷轧板组织与性能的影响[J].特种铸造及有色合金,2020,40(07):731-734. DOI： 10.15980/j.tzzz.2020.07.008.

Wang Huachun, Huang Shuping, He Kezhun, et al. Effects of Solid Solution Treatment on Microstructure and Mechanical Properties of 2A14 Aluminum Alloy Cold Rolled Sheet. [J]. Special Casting & Nonferrous Alloys 40(7):731-734(2020) DOI： 10.15980/j.tzzz.2020.07.008.

摘要

采用DSC差热分析、拉伸试验、硬度测试及金相观察等方法

分析了固溶处理对2A14铝合金冷轧板材显微组织与力学性能的影响。结果表明

2A14铝合金冷轧薄板的过烧温度为508℃。随固溶温度升高和保温时间延长

合金的固溶程度增大

经自然时效后

合金强度逐渐提高

在505℃下固溶30min时合金强度最高。而随着固溶温度进一步升高

合金发生再结晶且晶粒长大

沉淀强化减弱

因而强度降低。综合得到2A14铝合金冷轧板的最佳固溶处理制度为505℃下保温30min。

Abstract

The influences of solid solution treatment on microstructure and mechanical properties of 2A14 aluminum alloy cold-rolled sheet were investigated by DSC

tensile testing

hardness testing and microstructure observation.The results reveal that the overheated temperature of 2A14 alloy cold rolled sheet is 508℃.With the increase of solid solution temperature and holding time

the degree of solid solution of the alloy is increased.After natural aging

the strength of 2A14 alloy sheet is gradually increased.With the solid solution treatment at 505℃ for 30 min

the strength of 2A14 alloy reaches the maximum value.However

with the further increase of the solid solution temperature

the recrystallization of alloy can be observed with the grain size coarsened

and the precipitation-strengthening is weakened

threrfore the strength of 2A14 alloy is reduced.In conclusion

the ideal solution treatment for 2A14 aluminum alloy sheet is heat presevation for 30 min at 505℃.