Crack initiation behavior in single crystalline silicon

被引：23

作者：

Zhao, Lv ^{[1
]}

Bardel, Didier ^{[1
]}

Maynadier, Anne ^{[1
,2
]}

Nelias, Daniel ^{[1
]}

机构：

[1] Univ Lyon, CNRS UMR5259, INSA, LaMCoS, F-69621 Lyon, France

[2] Femto ST, F-25030 Besancon, France

来源：

SCRIPTA MATERIALIA | 2017年 / 130卷

关键词：

Fracture; Static energy release rate; Fractography; Crack velocity; Silicon single crystal; DYNAMIC FRACTURE; INSTABILITIES; ANISOTROPY;

D O I：

10.1016/j.scriptamat.2016.11.015

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this article, we report special fracture initiation behavior of (110) cleavage in silicon single crystal. It is found that the static energy release rate always exceeds the material toughness upon crack initiation. According to high-speed imaging measurements and fractographies, it is found that the crack has an important initial velocity, i.e. up to 3000 m/s, and then reaches the steady-state propagation regime very quickly. The experimentally revealed initial crack velocity is in good agreement with estimation from the energy flux at crack initiation. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：83 / 86

页数：4

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