贾澳,魏珂正,徐媛媛,黄卓,王子健,丁汉林,项重辰

• 1:苏州大学沙钢钢铁学院

摘要(Abstract)：

采用扫描电镜、能谱仪、X射线衍射仪、硬度试验和拉伸试验等研究了Al、Zn元素单独或同时添加对Mg-Cu合金微观组织和力学性能的影响。结果表明：与铸态相比，T6处理后3种合金的力学性能都有明显地提高；其中Mg-1Cu-1Zn合金的力学性能提升得最多，其热处理后的屈服强度为176.6 MPa、抗拉强度为267.9 MPa、伸长率为14.1%,比铸态分别提高了58.1%、41.6%和40.7%。仅添加Zn元素的Mg-1Cu-1Zn合金，T6处理后晶界上的大部分第二相已成功固溶进基体中，并在晶粒内生成了圆球状析出相，经分析确认这两种相为MgZnCu和Mg(Zn, Cu)_2;合金力学性能提高的原因是固溶强化和时效强化等多种因素的综合作用。

关键词(KeyWords)： Mg-Cu合金;热处理;力学性能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 贾澳,魏珂正,徐媛媛,黄卓,王子健,丁汉林,项重辰

DOI: 10.13289/j.issn.1009-6264.2023-0503

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