熔体处理对Mg-6Gd-3Y-0.4Zr-2Zn镁合金组织的影响  

Effects of Melt Treatment on Microstructure of Mg-6Gd-3Y-0.4Zr-2Zn Magnesium Alloy

作　　者：薛寒松[1] 向军军[1] 李迪[1] 胡少飞[1] 张丁非[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044

出　　处：《热加工工艺》2014年第1期1-4,共4页Hot Working Technology

基　　金：国家科技支撑计划项目(2011BAE22B01)

摘　　要：通过重力铸造法制备了Mg-6Gd-3Y-0.4Zr-2Zn合金熔体,采用机械振动、机械搅拌、超声波不同方式对合金熔体进行了处理。研究了熔体处理对Mg-6Gd-3Y-0.4Zr-2Zn合金微观组织的影响。结果表明:不同方式处理的合金熔体,合金晶粒都得到了细化,第二相分布弥散。超声波处理后铸造缺陷消失。Mg-6Gd-3Y-0.4Zr-2Zn alloy melt was prepared by gravity casting. The alloy melt was processed by different ways （mechanical vibration, mechanical stir and ultrasonic）. The influences of melt treatment on the microstmcture of Mg-6Gd-3Y-0.4Zr-2Zn alloy were studied. The results show that for the alloy melt processed in different ways, all alloy grains are refined, and the second phase distribution disperses. The casting defects disappear after ultrasonic treatment.

关 键 词：Mg-6Gd-3Y-0 4Zr-2Zn合金 熔体处理 超声波 

分 类 号：TG223[金属学及工艺—铸造]