Preparation of a Zr-based bulk glassy alloy foam

被引：21
|
作者：
Wada, Takeshi [1 ]
Wang, Xinmin [1 ]
Kimura, Hisamichi [1 ]
Inoue, Akihisa [1 ]
机构：
[1] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan
来源：
SCRIPTA MATERIALIA | 2008年 / 59卷 / 10期
关键词：
Metallic glass; Porous material; Foaming; Shear bands;
D O I：
10.1016/j.scriptamat.2008.07.016
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A Zr48Cu36Al8Ag8 bulk metallic glass (BMG) containing spherical pores with 3.9% porosity was prepared by melting a Zr48Cu36Al8Ag8 powder under 1.0 MPa pressurized helium. Annealing treatment of the porous alloy in a supercooled liquid region causes expansion of the pores. Highly porous BMG with a cellular structure was prepared by sudden reduction of the helium pressure in the crucible before quenching. The porous alloys exhibited significant plasticity due to a high density of shear bands initiated from pores. (c) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1071 / 1074
页数：4
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