高塑性铸态镁合金研究进展  

Research Progress of As-cast Magnesium Alloys with High Plasticity

作　　者：蒋斌[1,2,3] 刘文君 董含武[2,3] 程仁菊 张娜[2,3] 潘复生 JIANG Bin;LIU Wenjun;DONG Hanwu;CHENG Renju;ZHANG Na;PAN Fusheng(College of Materials Science and Engineering,Chongqing University,Chongqing 400044,China;Chongqing Research Center for Advanced Materials,Chongqing Academy of Science and Technology,Chongqing 401123,China;National Engineering Research Center for Magnesium Alloys,Chongqing University,Chongqing 400044,China)

机构地区：[1]重庆大学材料科学与工程学院,重庆400044 [2]重庆市科学技术研究院新材料中心,重庆401123 [3]重庆大学国家镁合金工程中心,重庆400044

出　　处：《航空材料学报》2018年第4期10-25,共16页Journal of Aeronautical Materials

基　　金：国家自然科学基金(51531002;51474043);国家重点研发计划项目(2016YFB0301104;2016YFB0101700)

摘　　要：铸态金属结构材料具有足够的塑性是后续进行变形加工以提高综合力学性能的前提,开发塑性相对较好的铸态镁合金,对于变形镁合金的多样化发展和扩大应用范围,具有重要的意义。本文综述了Mg-Al、Mg-Li、Mg-Zn、Mg-RE(稀土)等系列镁合金中塑性相对较好的铸态合金的研究情况,总结了熔铸工艺等的影响。铸态镁合金塑性的提高,多是合金化元素带来的晶粒细化与第二相弥散强化两种作用的综合结果;多种元素复合微合金化的方法更有优势;热处理也能进一步优化合金性能,快冷铸造、外加电磁场等熔铸工艺和方法也有不错的效果,值得在生产中推广使用。It is necessary for cast alloys possessing sufficient plasticity to be subjected to deforming progresses for the improvement of mechanical properties.Developing as-cast magnesium alloys with appreciated plasticity is therefore important to the variety of wrought magnesium alloys and the enlargement of their applications.In this paper,the research progresses of Mg-Al,Mg-Li,Mg-Zn and Mg-RE(rare earth)series magnesium alloys are enclosed,as well as the effects of casting processes.The plasticity enhancement of as-cast magnesium alloys was mainly attributed to the combination of the grain refinement and the second phases introduced by alloying elements,and microalloying with several alloying elements was more favorited.Heat treatment,rapid cooling casting and external electromagnetic field were also beneficial to mechanical properties and worth to be promoted in industrial engineering.

关 键 词：镁合金 铸态 高塑性 合金化 熔铸工艺 

分 类 号：TG146.2[一般工业技术—材料科学与工程]