Mg-Gd-Y-Nd-Zr合金的高温固溶研究  

High Temperature Solution Treatment of Mg-Gd-Y-Nd-Zr Alloy

作　　者：仲莹莹[1] 沈枫[1] 杨京[1] 李文瑛[1] 

机构地区：[1]航天科工防御技术研究试验中心,北京100854

出　　处：《航天制造技术》2011年第2期33-36,共4页Aerospace Manufacturing Technology

摘　　要：采用拉伸、金相组织观察、SEM扫描等方法,研究了不同固溶对Mg-Gd-Y-Nd-Zr合金组织和力学性能的影响。结果表明,Mg-Gd-Y-Nd-Zr合金经过510℃固溶处理后,样品中的伪共晶组织及偏析产物消失,但合金中残留粗大的富稀土粒子。合金经高温560℃固溶处理后,能基本消除晶界处的偏析,其塑性提高,延伸率提高50%。The effects of different solution-treatment conditions on the microstructure and mechanical properties of Mg-Gd-Y-Nd-Zr alloy are investigated by tensile test,OM and SEM measurement.The results show that,after solution treatment at 510℃,the pseudo eutectic structure disappeares with some RE shot leaving.After solution treatment at 560℃,segregation of grain boundary is basically eliminated to improve their plasticity and elongation increases by 50%.

关 键 词：镁合金 固溶 显微组织 力学性能 

分 类 号：TG113[金属学及工艺—物理冶金]