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.
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页码：761 / 764
页数：4
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