EFFECT OF Zn/Gd RATIO ON PHASE CONSTITUTIONS IN Mg-Zn-Gd ALLOYS

被引：0
|
作者：
Zhang, S. [1 ]
Yuan, G. Y. [1 ]
Lu, C. [1 ]
Ding, W. J. [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloy Net Forming, Shanghai 200240, Peoples R China
来源：
MAGNESIUM TECHNOLOGY 2011 | 2011年
关键词：
Mg-Zn-Gd alloys; long period stacking ordered (LPSO) structure; I phase; STACKING ORDERED STRUCTURE; QUASI-CRYSTAL; LAVES PHASES; STRENGTH;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
This paper discusses the influence of Zn/Gd ratio on the phase constitutions of as-cast Mg-Zn-Gd alloys in the Mg-rich corner within the range of 0.5-3.0 at.% for Zn content and 0.5-3.0 at.% for Gd content. The critical Zn/Gd ratio for the formation of icosahedral quasicrystal phase (I phase) and long period stacking ordered (LPSO) structure in the Mg-Zn-Gd system has been confirmed. LPSO structure and (Mg,Zn)(3)Gd phase are formed in Mg-Zn-Gd alloys in the range of Zn/Gd ratio <= 1.0. However, only (Mg,Zn)(3)Gd phase is observed in the alloys in the range of 1.0< Zn/Gd ratio <1.5. And if Zn/Gd ratio is >= 1.5, I phase and (Mg,Zn)(3)Gd phase in the alloys begin to form gradually.
引用
收藏
页码：157 / 159
页数：3
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