On the grain size softening in nanocrystalline materials

被引：369
作者：
Conrad, H [1 ]
Narayan, J [1 ]
机构：
[1] N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA
来源：
SCRIPTA MATERIALIA | 2000年 / 42卷 / 11期
基金：
美国国家科学基金会;
关键词：
grain boundaries; thermally activated; hardness; atomic;
D O I：
10.1016/S1359-6462(00)00320-1
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
An atomistic grain boundary sliding model is developed which can account for grain softening in nanocrystalline materials which occurs below a certain critical grain size. This critical grain size represents the change from Hall-Petch dislocation plastic flow to grain boundary sliding at smaller grain sizes.
引用
收藏
页码：1025 / 1030
页数：6
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