陈雷雷,李全安,张兴渊,陈君,张清

• 1:河南科技大学材料科学与工程学院
• 2:有色金属共性技术河南省协同创新中心

摘要(Abstract)：

利用XRD、OM、SEM、EDS、TEM和拉伸性能测试,研究了不同热处理对Mg-5Gd-3Y-0.5Z合金组织和力学性能的影响。结果表明:Mg-5Gd-3Y-0.5Zr合金的铸态组织主要由基体相α-Mg、Mg5Gd和Mg24Y5相组成;经固溶处理后,铸态组织中粗大的析出相基本都溶入α-Mg基体;再经时效处理后,有纳米级别的颗粒状或片状相重新析出。室温条件下,Mg-5Gd-3Y-0.5Zr合金的抗拉强度在T6态达到最大值206.6 MPa。铸态和T6态合金的抗拉强度均随温度的升高,呈现出降低趋势,且下降速度较快;而T4态合金的强度在250℃以前基本保持不变。

关键词(KeyWords)： Mg-5Gd-3Y-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(51171059);; 河南省高校科技创新团队支持计划(2012IRTSTHN008);; 河南省基础与前沿技术研究计划项目(102300410018);; 国家自然科学基金(NSFC-河南人才培养联合基金;U1404501)

作者(Author): 陈雷雷,李全安,张兴渊,陈君,张清

DOI: 10.13289/j.issn.1009-6264.2016.02.009

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