Structural relaxation, glass-forming ability and mechanical properties of Mg-Cu-Ni-Gd alloys

被引：40
|
作者：
Yuan, GY [1 ]
Amiya, K
Inoue, A
机构：
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200030, Peoples R China
[2] Tohoku Univ, Mat Res Inst, Sendai, Miyagi 9808577, Japan
[3] ERATO, Japan Sci & Technol Corp, Inoue Superliquid Glass Project, Sendai, Miyagi 9820807, Japan
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2005年 / 351卷 / 8-9期
基金：
日本学术振兴会;
关键词：
D O I：
10.1016/j.jnoncrysol.2005.01.061
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The structural relaxation and glass-forming ability (GFA) of Mg-Cu-Gd-based glassy alloys and the effect of Ni addition on the glass-forming ability, structural relaxation and mechanical properties were studied by thermal analysis, X-ray diffractometry (XRD) and transmission electron microscopy (TEM). The medium-range order (MRO) zones of about 1-2 nm size were observed in the Mg65CU25Gd10 glassy alloy after structural relaxation caused by annealing for 180 s at 305 K. The structural relaxation resistance increased with decreasing Cu content, although the GFA also decreased in Mg-Cu-Gd-based alloys. Appropriate substitution of CU by Ni in Mg75CU15Gd10-based alloy not only improved the glass-forming ability and mechanical properties, but also increased the stability against structural relaxation. (c) 2005 Published by Elsevier B.V.
引用
收藏
页码：729 / 735
页数：7
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