Improved plasticity of bulk metallic glasses upon cold rolling

被引：125

作者：

Lee, M. H. ^{[2
]}

Lee, K. S. ^{[3
]}

Das, J. ^{[1
]}

Thomas, J. ^{[4
]}

Kuehn, U. ^{[4
]}

Eckert, J. ^{[4
,5
]}

机构：

[1] Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India

[2] Korea Inst Ind Technol, Adv Mat Div, Inchon 406840, South Korea

[3] Korea Inst Mat Sci, Appl Plast Res Grp, Dept Mat Proc, Chang Won 614831, Gyeongnam, South Korea

[4] Leibniz Inst IFW Dresden, Inst Complex Mat, D-01069 Dresden, Germany

[5] Tech Univ Dresden, Inst Mat Sci, D-01062 Dresden, Germany

来源：

SCRIPTA MATERIALIA | 2010年 / 62卷 / 09期

关键词：

Bulk metallic glass; Short-range order; Cold rolling; Shear bands; Plasticity; SUPERCOOLED LIQUID; STRUCTURAL RELAXATION; SHEAR BANDS; ALLOY; CRYSTALLIZATION; DEFORMATION; TRANSITION; VISCOSITY; STRESS; STATE;

D O I：

10.1016/j.scriptamat.2010.01.024

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The intrinsic plasticity of Zr44Ti11Cu9.8Ni10.2Be25 and Zr55Ti5Al10Cu20 Ni-10 bulk metallic glasses (BMGs) are improved from 0.5% up to 15% plastic strain due to the introduction of microstructural inhomogeneities upon cold rolling at room temperature. This approach shows an easy way to overcome the intrinsic brittleness of the BMGs by modifying their physical properties, which enables easy nucleation and branching of multiple shear bands upon unconstrained loading during the compression test. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：678 / 681

页数：4

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