Localization of plastic deformation along shear bands in Vitreloy bulk metallic glass during high pressure torsion

被引：24

作者：

Kovacs, Zsolt ^{[1
]}

Schafler, Erhard ^{[2
]}

Szommer, Peter ^{[1
]}

Revesz, Adam ^{[1
]}

机构：

[1] Eotvos Lorand Univ, Dept Mat Phys, H-1518 Budapest, Hungary

[2] Univ Vienna, Fac Phys, A-1090 Vienna, Austria

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 593卷

基金：

匈牙利科学研究基金会;

关键词：

Shear band; High pressure torsion; Bulk metallic glass; Deformation; AMORPHOUS-ALLOYS; BEHAVIOR; MECHANISMS;

D O I：

10.1016/j.jallcom.2014.01.079

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：

Microscopic plastic behavior of high purity commercial Vitreloy 1b glassy disks subjected to high pressure torsion was investigated by analyzing the distortion of a marker grid produced by focused ion beam milling. Scanning electron microscopy and atomic force microscopy are applied to measure offsets of shear bands at the surface. Unlike in other macroscopic deformation tests, short and wavy shear bands with submicron offsets and substantial normal offset components are observed indicating concurrent formation of numerous bands. Material pile-ups along major shear bands result in healing of the glass counterparts. (C) 2014 Elsevier B. V. All rights reserved.

引用

页码：207 / 212

页数：6

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