Bypassing shear band nucleation and ductilization of an amorphous-crystalline nanolaminate in tension

被引：41

作者：

Nieh, T. G. ^{[1
]}

Wadsworth, J. ^{[2
]}

机构：

[1] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

[2] Battelle Mem Inst, Columbus, OH 43201 USA

来源：

INTERMETALLICS | 2008年 / 16卷 / 09期

关键词：

composites; based on the metallic glass matrix; brittleness and ductility; thin films;

D O I：

10.1016/j.intermet.2008.06.018

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：

Based on a recent nucleation model, the critical shear band nucleus size has been estimated to be about 20 nm; we, therefore, predict that if the characteristic dimension of an amorphous phase is <20 nm, catastrophic failure can be avoided. We reproduced a previous tension test on an amorphous-crystalline Cu-Zr laminate, having amorphous layers thinner than 10 nm. The nanolaminate exhibited a remarkable tensile elongation of 4%. The fracture surface of this newly tested material was examined. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1156 / 1159

页数：4

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