Experimental study about nano-deformation field near quasi-cleavage crack tip

被引：19
|
作者：
Xing, YM [1 ]
Dai, FL
Yang, W
机构：
[1] Tsing Hua Univ, Dept Engn Mech, FML, Beijing 100084, Peoples R China
[2] Inner Mongolia Polytechn Univ, Dept Basic Sci, Hohhot 010062, Peoples R China
来源：
SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY | 2000年 / 43卷 / 09期
基金：
中国国家自然科学基金;
关键词：
nano-moire method; brittle materials; crack tip; Peierls dislocation; deformation;
D O I：
10.1007/BF02879802
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
Using the nano-moire method, we measure the near tip nanoscopic deformation on the {111} plane of single crystal silicon with a loaded quasi-cleavage crack running in the [110] direction. The measured strain distribution ahead of the crack tip agrees with the linear elastic fracture mechanics prediction up to 10 nm from the crack tip. Dislocations of Peierls type are detected and they extend from the crack tip over a length of hundreds of Burgers vectors.
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页码：963 / 968
页数：6
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