摘要
研究了含Zr0.4%～1.2%的Mg-5Sn合金(质量分数,%,下同)的显微组织和力学性能。显微组织观察表明,Zr元素能够起到明显的晶粒细化作用。扫描电镜EDS分析和XRD分析验证了这一结果。力学性能测试结果表明:随着合金中Zr含量的增加,抗拉强度及延伸率都有提高,延伸率提高更显著,Zr的晶粒细化起了主要作用;而合金的显微硬度基本不变,其原因是在合金中没有明显数量的硬质相出现。
The effects of zirconium on the microstructure and mechanical properties of Mg-5Sn alloys were studied. It can be found that the grain of alloy is obviously refined with the addition of Zr. The mechanical properties experiments indicate that the tensile strength and especially the elongation of the alloys are improved gradually with rising of Zr content. The main reason is attributed to the grain refinement. The micro-hardness of the alloy changes little after the addition of Zr, which is due to no obvious appearance of the second hardening phases in the alloys.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2006年第12期1912-1915,共4页
Rare Metal Materials and Engineering
基金
四川省科技厅重点攻关项目(04GG1589)
