A new modified expanding cavity model for characterizing the spherical indentation behaviour of bulk metallic glass with pile-up

被引：23

作者：

Ai, K. ^{[1
]}

Dai, L. H. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China

来源：

SCRIPTA MATERIALIA | 2007年 / 56卷 / 09期

基金：

中国国家自然科学基金;

关键词：

expanding cavity model; pile-up; bulk metallic glass; hardness; stress-strain;

D O I：

10.1016/j.scriptamat.2007.01.017

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Spherical nanoindentation tests were performed on Zr41.2Ti13.8Cu12.5Ni10Be22.5 bulk metallic glass and pile-ups were observed around the indenter. A new modified expanding cavity model was developed to characterize the indentation deformation behavior of strain-hardening and pressure-dependent materials. By using this model, the representative stress-strain response of this bulk metallic glass to hardness and indentation in the elastic-plastic regime were obtained taking into consideration the effect of pile-up. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：761 / 764

页数：4

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