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宁志良,曹福洋,刘洪汇,孙剑飞,杜剑锋.Mg-2.54Nd-0.26Zn-0.32Zr合金组织分析[J].稀有金属材料与工程(英文),2009,38(11):1997~2000.[Ning Zhiliang,Cao Fuyang,Liu Honghui,Sun Jianfei,Du Jianfeng.Microstructure Analysis of Mg-2.54Nd-0.26Zn-0.32Zr Alloy[J].Rare Metal Materials and Engineering,2009,38(11):1997~2000.]
Microstructure Analysis of Mg-2.54Nd-0.26Zn-0.32Zr Alloy
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Received:October 27, 2008  Revised:August 12, 2009
Key words: Mg-2.54Nd-0.26Zn-0.32Zr alloy  microstructure analysis  α-Mg  Mg12Nd
Foundation item:
Author NameAffiliation
Ning Zhiliang Harbin Institute of Technology, Harbin 150001, China 
Cao Fuyang Harbin Institute of Technology, Harbin 150001, China 
Liu Honghui Harbin Dongan Engine (Group) Co., Ltd., Harbin 150056, China 
Sun Jianfei Harbin Institute of Technology, Harbin 150001, China 
Du Jianfeng Harbin Institute of Technology, Harbin 150001, China 
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      The microstructures of both as-cast and heat treated Mg-2.54Nd-0.26Zn-0.32Zr alloy were investigated by means of XRD, DTA, OM and TEM in this study. The results show that the massive Mg-RE phase Mg12Nd is mainly distributed on the grain boundary of as-cast Mg-2.54Nd-0.26Zn-0.32Zr. Only a small amount of flaky and grainy Mg12Nd distribute in the intracrystalline and grain boundary. The Mg12Nd phase is uniformly distributed on the matrix as crossed plate gathered by spotted state phase after solution and aging treatment.