Micropillar compression studies on a bulk metallic glass in different structural states

被引：147

作者：

Dubach, A. ^{[2
,3
]}

Raghavan, R. ^{[1
,3
]}

Loeffler, J. F. ^{[2
]}

Michler, J. ^{[3
]}

Ramamurty, U. ^{[1
]}

机构：

[1] Indian Inst Sci, Dept Mat Engn, Bangalore 560012, Karnataka, India

[2] ETH, Dept Mat, Lab Met Phys & Technol, CH-8093 Zurich, Switzerland

[3] EMPA Mat Sci & Technol, CH-3602 Thun, Switzerland

来源：

SCRIPTA MATERIALIA | 2009年 / 60卷 / 07期

基金：

瑞士国家科学基金会;

关键词：

Compression test; Metallic glasses; Plastic deformation; Shear bands; Free volume; PLASTIC-DEFORMATION; EMBRITTLEMENT; STRENGTH; BEHAVIOR; FRACTURE;

D O I：

10.1016/j.scriptamat.2008.12.013

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Uniaxial compression experiments on 0.3, 1 and 3 mu m diameter micropillars of a Zr-based bulk metallic glass in as-cast, shot-peened and structurally relaxed conditions were conducted. Shear band formation and stable propagation is observed to be the plastic deformation mode in all cases, with no detectable difference in yield strength according to either size or condition. The limitations of uniaxial compression tests in assessing the influence of various material conditions on plasticity, when it is inhomogeneous in nature, are illustrated. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：567 / 570

页数：4

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