改善Mg-Al系镁合金离异共晶β相的方法  

Methods of Improving Divorced Eutectic β Phase in Mg-Al Based Alloys

作　　者：夏鹏举[1] 蒋百灵[2] 张继源[2] 袁森[2] 

机构地区：[1]陕西理工学院材料科学与工程学院,陕西汉中723003 [2]西安理工大学材料科学与工程学院,陕西西安710048

出　　处：《热加工工艺》2007年第17期61-64,共4页Hot Working Technology

基　　金：陕西省教育厅科学技术研究计划资助项目(07JK210)

摘　　要：Mg-Al系镁合金中的第二相主要是离异共晶β相,其含量、形状、分布和大小对合金的力学性能和成形有很大的影响。综述了Mg-Al系镁合金国内外从晶粒细化方面来改善离异共晶β相方法,并分析了不同方法的特点和机理,指出了现阶段存在的问题和今后的工作思路。The second-phase is mainly divorced eutectic β phase in the Mg-Al based alloys. The mechanical property and forming of magnesium alloys are apparently decided by the volume fraction, shape, distribution, and size of β phase. The methods of improving the divorced eutectic β phase by refining grain in Mg-Al based alloys are reviewed. The Characteristic and mechanism of these different grain refinement methods are analyzed, and the existed problems and development directions are also pointed out.

关 键 词：镁合金 离异共晶 晶粒细化 

分 类 号：TG146.2[一般工业技术—材料科学与工程]