Effect of hydrogen and grain boundaries on dislocation nucleation and multiplication examined with a NI-AFM

被引：16
作者：
Barnoush, Afrooz [1 ]
Yang, Bo [1 ]
Vehoff, Horst [1 ]
机构：
[1] Univ Saarland, Dept Mat Sci, D-66041 Saarbrucken, Germany
来源：
ADVANCES IN SOLID STATE PHYSICS | 2008年 / 47卷
关键词：
D O I：
10.1007/978-3-540-74325-5_20
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A nanoindenting AFM (NI-AFM) with an environment chamber was constructed to study the effect of hydrogen on decohesion and dislocation nucleation and the effect of grain boundaries on dislocation nucleation and multiplication. Ultra fine grained Ni single crystals were examined. It could be clearly shown that hydrogen influences the pop in width and length. Testing single grains with grain sizes below one micron at different rates inside a NI-AFM showed that the rate dependence of ultra fine grained Ni is a result of the interaction of the growing dislocation loops with the boundary.
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页码：253 / 269
页数：17
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