冷航,李全安,陈晓亚,朱宏喜

• 1:河南科技大学材料科学与工程学院
• 2:有色金属新材料与先进加工技术省部共建协同创新中心

摘要(Abstract)：

通过光学显微镜、扫描电镜、X射线衍射仪、能谱仪和拉伸性能测试等研究了铸态Mg-xHo-3Sm-0.5Zr(x=6, 8, 10, 12,质量分数，%)合金的显微组织与力学性能。结果表明：铸态Mg-xHo-3Sm-0.5Zr合金组织主要由α-Mg、Mg_(41)Sm_5以及Mg_(24)Ho_5相组成。随着Ho含量的增加，合金的晶粒逐渐细化，第二相含量略有增加，当Ho含量达到8%时，合金组织最均匀，综合力学性能最好，其抗拉强度、屈服强度和伸长率分别为174 MPa、113 MPa和8.37%。

关键词(KeyWords)： Mg-xHo-3Sm-0.5Zr合金;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51571084)

作者(Author): 冷航,李全安,陈晓亚,朱宏喜

DOI: 10.13289/j.issn.1009-6264.2021-0498

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