Mn-25Al中间合金对Mg-6Al镁合金的晶粒细化的影响  

Effects of Mn-25Al Intermediate Alloy on Grain Refinement of Mg-6Al Magnesium Alloys

作　　者：王飞[1] 李克[1] 廖健南[1] 詹美清[1] 吴尚敏[1] 

机构地区：[1]南昌大学机电工程学院,江西南昌330031

出　　处：《热加工工艺》2014年第13期11-13,共3页Hot Working Technology

基　　金：国家自然科学基金资助项目(51264032);江西省自然科学基金资助项目(20114BAB206037);教育部留学回国人员科研启动基金资助项目(第44批)

摘　　要：使用真空淬火炉制备出含τ-AlMn相的Mn-25Al中间合金,并将其加入到Mg-6Al镁合金中。同时分析了该中间合金对Mg-6Al的晶粒细化效果。实验结果表明,Mn-25Al中间合金中的τ-AlMn相对Mg-6Al镁合金有一定的细化效果,Mn含量为0.3wt%时,细化效果最好。点阵错配度计算分析表明,τ-AlMn相可以成为镁合金异质形核核心。Mn-25A1 intermediate alloy containing τ-A1Mn phase was prepared by using vacuum quenching furnace, and it was added to the Mg-6A1 magnesium alloy. Meanwhile, the effects of the intermediate alloy on grain refinement of Mg-6A1 alloys were analyzed. The experimental results show that, τ-A1Mn phase in Mn-25A1 intermediate alloy has the certain refinement effect to the Mg-6A1 magnesium alloy. When the content of Mn is 0.3wt%, the refining effect of the magnesium alloy is the best. Lattice mismatch calculation analysis shows that τ-A1Mn phase can act as magnesium alloy heterogeneous nuclei.

关 键 词：镁合金 异质形核 晶粒细化 

分 类 号：TG292[金属学及工艺—铸造] TG243