高强韧镁-稀土系镁合金研究现状及展望  

Research Status and Outlook of High Strength and Ductility Mg-RE Magnesium Alloys

作　　者：林卫丽[1] 

机构地区：[1]西安工业大学北方信息工程学院,陕西西安710032

出　　处：《热加工工艺》2015年第4期12-15,24,共5页Hot Working Technology

摘　　要：总结了稀土元素在镁合金中的具体作用,并指出稀土元素对镁合金力学性能有较大影响。综述了常见的Mg-RE合金,包括常规合金添加少量稀土、Mg-Nd-Y等常见的耐热镁合金体系以及近年来研究很热的LPSO相镁合金,并分别对其组织和力学性能进行概述。最后针对目前研究高强韧镁合金所存在的难题,提出了合金化、塑性变形和热处理工艺始终是提高镁合金力学性能的主要手段。The roles of rare earth element in the magnesium alloys were summarized, and it can improve the mechanical properties largely. The common Mg-RE series alloys were reviewed, including the commercial alloys with a little RE, Mg-Nd-Y alloys, LPSO magnesium alloys and so on, and the microstructure and mechanical properties of the above alloys were outlined.Finally, according to the problems of the present study in high strength and ductility magnesium alloys, it proposed that the alloying, plastic deformation and heat-treatment were the main methods to improve the mechanical properties.

关 键 词：高强韧镁合金 稀土 第二相 力学性能 

分 类 号：TG113.2[金属学及工艺—物理冶金]