Molecular Dynamics Simulation and Experimental Proof of Hydrogen-enhanced Dislocation Emission in Nickel

被引：0
|
作者：
Zhongji Li
机构：
来源：
International Journal of Minerals,Metallurgy and Materials | 2002年 / 01期
关键词：
nickel; molecular dynamics simulation; hydrogen; dislocation emission; TEM;
D O I：
暂无
中图分类号：
O641 [结构化学];
学科分类号：
070304 ; 081704 ;
摘要：
A quasi three dimensions molecular dynamic method was used to simulate the effect of hydrogen on dislocation emission and crack propagation in nickel. In situ observation in a transmission electron microscope (TEM) was used to confirm the simulation results. The simulation result indicated that hydrogen solubilized in nickel decreased the critical stress intensity for the dislocation emission, i.e., hydrogen enhanced dislocation emission. In situ observation in TEM showed that hydrogen enhanced dislocation emission and motion before the initiation of hydrogen-induced crack.
引用
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页码：59 / 64
页数：6
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