高强镁合金组织细化方法研究现状  

A Review of Microstructure Refinement Methods for High Strength Magnesium Alloys

作　　者：万迪庆[1] 袁艳平[1] 周新建[1] 

机构地区：[1]华东交通大学机电工程学院,南昌330013

出　　处：《材料导报》2015年第9期76-80,共5页Materials Reports

基　　金：国家自然科学基金(51361010)

摘　　要：镁合金组织对其力学性能影响十分显著,通常未经处理的合金组织中存在的粗大相严重割裂基体,降低力学性能,恶化其切削加工性能,制约高强镁合金的广泛应用。鉴于此,从镁合金的组织细化方面入手,概述了变质处理技术、机械搅拌半固态和定向凝固技术在高强镁合金组织细化及其对力学性能影响方面的研究现状。最后对镁合金组织细化前景进行了展望,对推广镁合金的应用具有一定参考意义。In terms of magnesium alloys,the microstructure will have a significant influence on mechanical properties.Generally,the coarsened phases existing in the untreated alloys seriously split the matrix,lower the mecha-nical properties,worsen the machinability,and restrict the wide application of the high strength magnesium alloy.Hence,focusing on the microstructure control of high strength magnesium alloys,the current research status of the effect of modification technology,mechanical stirring and directional solidification technology on the refinement of the magnesium alloy microstructure and mechanical properties is reviewed.Finally,developmental prospects of the magnesium alloy microstructure refinement are presented,which have a certain reference value in promoting the application of magnesium alloy.

关 键 词：镁合金 变质处理 机械搅拌 定向凝固 

分 类 号：TG146.22[一般工业技术—材料科学与工程]