Consolidation of mechanically alloyed Mg49Y15Cu36 powders by vacuum hot pressing

被引：12
|
作者：
Lee, P. Y. [1 ]
Lo, C.
Jang, J. S. C.
机构：
[1] Natl Taiwan Ocean Univ, Inst Mat Engn, Chilung, Taiwan
[2] I Shou Univ, Dept Mat Sci & Engn, Kaohsiung, Taiwan
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2007年 / 434卷
关键词：
mechanical alloying; metallic glass; high-pressure; thermal analysis;
D O I：
10.1016/j.jallcom.2006.08.282
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The preparation of Mg49Y15Cu36 metallic glass powders was accomplished by mechanical alloying of pure Mg, Y, and Cu after 10 h of milling. The thermal stability of these Mg49Y15CU36 amorphous powders was investigated by differential scanning calorimeter (DSC). The T-g, T-x, and Delta T-x are 450, 492, and 42 K, respectively. The as-milled Mg49Y15CU36 powders were then consolidated by vacuum hot pressing into disc compacts with a diameter and thickness of 10 and I mm, respectively. After vacuum hot pressing, bulk Mg49Y15CU36 metallic glass with nanocrystalline precipitates homogeneously embedded in a highly dense glassy matrix was obtained. The applied pressure during consolidation can enhance the thermal stability and prolong the existence of amorphous phase inside Mg49Y15CU36 powders. (C) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：354 / 357
页数：4
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