Stable flowing of localized shear bands in soft bulk metallic glasses

被引：55
|
作者：
Zhang, Q. S. [1 ]
Zhang, W. [2 ]
Xie, G. Q. [2 ]
Louzguine-Luzgin, D. V. [1 ,2 ]
Inoue, A. [1 ]
机构：
[1] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan
[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
来源：
ACTA MATERIALIA | 2010年 / 58卷 / 03期
关键词：
Metallic glasses; Hardness test; Compression test; Plastic deformation; MECHANICAL-BEHAVIOR;
D O I：
10.1016/j.actamat.2009.10.005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper reports a novel class of Zr-Cu-Fe-Al bulk metallic glasses (BMGs) with high Zr content and unusual deformation behavior. Higher content of Zr results in lower hardness, but favors the generation of highly localized shear bands, even if nanocrystalline phases precipitate in the glassy matrix. Moreover, flow of the dominant shear band proceeds slowly under compressive stress without rapid shear rupture and facture. The unusual deformation behavior suggests that designing BMG with a high content of solvent element and low hardness might be a promising new way of developing ductile BMG. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：904 / 909
页数：6
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