Induced elastic anisotropy in a bulk metallic glass

被引：32
|
作者：
Concustell, A. [1 ,2 ]
Godard-Desmarest, S. [1 ,3 ]
Carpenter, M. A. [4 ]
Nishiyama, N. [5 ]
Greer, A. L. [1 ,6 ]
机构：
[1] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England
[2] La Farga Grp, Barcelona 08508, Spain
[3] Univ Oxford, Dept Mat, Oxford OX1 3PH, England
[4] Univ Cambridge, Dept Earth Sci, Cambridge CB2 3EQ, England
[5] RIMCOF Tohoku Univ Lab, Mat Proc Technol Ctr, Sendai, Miyagi 9808577, Japan
[6] Tohoku Univ, World Premier Int Res Ctr WPI AIMR, Sendai, Miyagi 9808577, Japan
来源：
SCRIPTA MATERIALIA | 2011年 / 64卷 / 12期
关键词：
Acoustic methods; Anisotropy; Bulk metallic glass; Creep; Elastic behavior; STRUCTURAL ANISOTROPY; MAGNETIC-ANISOTROPY; DEFORMATION; RELAXATIONS;
D O I：
10.1016/j.scriptamat.2011.02.028
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Full evaluation of the elasticity tensor of a bulk metallic glass (Pd40Cu30Ni10P20) shows anisotropy induced by creep under uniaxial compression changing sign with increasing strain. Anisotropy due to anelastic strain is erased by zero stress annealing. At higher strain anisotropy of opposite sign suggests structural alignment by plastic flow. Induced anisotropy is most evident in the Poisson ratio, may relate to other properties, including the strength and toughness of metallic glasses, and may lead to misinterpretation of annealing effects. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1091 / 1094
页数：4
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