冯凯,黄晓锋,张亚楠,马颖,郝远

• 1:兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室

摘要(Abstract)：

利用光学显微镜、X射线衍射仪、扫描电镜和力学万能试验机等研究了ZC63镁合金在不同热处理工艺下的显微组织和力学性能的变化规律。结果表明:ZC63镁合金铸态组织主要由α-Mg和呈网状分布的CuMgZn相组成;经热处理后,强化相主要由颗粒状的CuMgZn和Mg2Zn3相组成。实验合金在445℃固溶24 h后,随着时效温度的升高,合金的抗拉强度和硬度值都逐渐降低,但在180℃时效20 h,伸长率最高,达到17.2%。热处理后合金的拉伸断口形貌中分布有颗粒状CuMgZn析出相,阻碍了晶界和位错的运动,裂纹沿着颗粒状析出相的边界以及内部扩展。

关键词(KeyWords)： ZC63镁合金;热处理;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家“973”计划项目(2010CB635106);; 甘肃省高等学校基本科研项目

作者(Author): 冯凯,黄晓锋,张亚楠,马颖,郝远

DOI: 10.13289/j.issn.1009-6264.2012.06.013

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