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金属学报  1989 

Al-2.2Li-2.5Cu-0.2Mg合金组织与性能的关系

, PP. 5-11

Keywords: Al-Li合金,热处理,组织结构,合金性能

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Abstract:

本文通过对Al-2.2Li-2.5Cu-0.2Mg合金在不同热处理条件下的金相、透射电镜观察以及力学性能测试,研究了其沉淀相变化与性能的关系。结果表明,经525℃(1h)固溶处理时,合金元素得到充分溶解。190℃时效16h合金由单一的T_1相强化,欠时效和过时效(16h)均为两相强化,其效果不如单相强化显著。时效前预变形处理可提高Al-Li合金的塑性而不降低其强度。

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