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Mg-Cu-(Y,Nd) pseudo-ternary bulk metallic glasses: The effects of Nd on glass-forming ability and plasticity

被引：126
作者：
Zheng, Qiang
Ma, Han
Ma, En
Xu, Jian
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
[2] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA
来源：
SCRIPTA MATERIALIA | 2006年 / 55卷 / 06期
基金：
中国国家自然科学基金;
关键词：
metallic glasses; bulk amorphous materials; magnesium; rare earth; ductility;
D O I：
10.1016/j.scriptamat.2006.05.029
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We report the improvement of glass-forming ability by using Nd to substitute Y in the Mg-Cu-Y bulk metallic glass (BMG). A search in the Mg-Cu-(Y,Nd) pseudo-ternary system located the best glass former at the Mg57Cu31Y6.6Nd5.4 composition, where the critical size for BMG formation (diameter D-c for copper mold casting) reached at least 14 mm. In comparison with the ternary Mg-Cu-Y glass, the Nd-containing BMG, without a significant change in Poisson's ratio, exhibits higher strength and improved compressive plasticity. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：541 / 544
页数：4
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