潘志强,金培鹏,王金辉

• 1:青海大学青海省轻金属合金及深加工工程技术研究中心

摘要(Abstract)：

借助OM、SEM、EDS、XRD和EPMA对Mg-4%Sn-(1.0~3.0)%Pb(质量分数)合金进行微观组织、物相和元素分析,采用万能试验机和显微硬度计测试其拉伸性能和硬度。结果表明,Pb的加入,抑制晶界上Mg2Sn相的析出,使得Mg2Sn相的数量减少并呈短棒状析出,合金的铸态组织由α-Mg和Mg2Sn相组成,Pb元素均匀分布在α-Mg和Mg2Sn相中。Pb添加量为2.5%时,合金的抗拉强度和伸长率均优于Mg-4%Sn合金的,分别达到了114.05 MPa和12.48%,Pb的加入使得合金的硬度降低。

关键词(KeyWords)： Mg-Sn-Pb合金;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 青海省科技计划项目(项目号2014-ZJ-709)

作者(Author): 潘志强,金培鹏,王金辉

DOI: 10.13289/j.issn.1009-6264.2015.07.004

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