固溶温度对2195铝锂合金组织与性能的影响

肖代红; 王新凯; 陈伟斌; 刘文胜

doi:10.15980/j.tzzz.2021.10.002

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固溶温度对2195铝锂合金组织与性能的影响
Effects of Solid Solution Temperature on the Microstructure and Properties of 2195 Al-Li Alloy
2021年41卷第10期页码：1193-1196
纸质出版日期： 2021 ，
DOI： 10.15980/j.tzzz.2021.10.002

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肖代红, 王新凯, 陈伟斌, 等. 固溶温度对2195铝锂合金组织与性能的影响[J]. 特种铸造及有色合金杂志, 2021,41(10):1193-1196.

Xiao Daihong, Wang Xinkai, Chen Weibing, et al. Effects of Solid Solution Temperature on the Microstructure and Properties of 2195 Al-Li Alloy[J]. Special Casting & Nonferrous Alloys, 2021,41(10):1193-1196.
肖代红, 王新凯, 陈伟斌, 等. 固溶温度对2195铝锂合金组织与性能的影响[J]. 特种铸造及有色合金杂志, 2021,41(10):1193-1196. DOI： 10.15980/j.tzzz.2021.10.002.

Xiao Daihong, Wang Xinkai, Chen Weibing, et al. Effects of Solid Solution Temperature on the Microstructure and Properties of 2195 Al-Li Alloy[J]. Special Casting & Nonferrous Alloys, 2021,41(10):1193-1196. DOI： 10.15980/j.tzzz.2021.10.002.

摘要

通过差热分析、组织分析、力学性能试验等方法

研究了不同固溶温度对2195铝锂合金显微组织及力学性能的影响。结果表明

固溶处理能够提高铝锂合金的力学性能。随着固溶温度增加

合金中残余Al

Cu相逐渐溶解进入基体

得到最大过饱和度固溶体

实现固溶强化;但固溶温度偏离最佳制度时

促使合金内回复再结晶和过烧情况发生

恶化合金的力学性能。

Abstract

The effects of different solid solution temperatures on the microstructure and mechanical properties of 2195 Al-Li alloy were investigated by differential thermal analysis

electron microscopy analysis

and tensile tests. The results indicate that solution treatment can improve the mechanical properties of 2195 alloy. As the solid solution temperature increases

the residual Al

Cu phase is gradually dissolved into the matrix

leading to the maximum supersaturation solid solution

achieving solid solution strengthening. However

the deviation of solid solution temperature from the optimal system promotes the recovery of recrystallization and over-burn in the alloy

resulting in deterioration of the mechanical properties.