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

页码：1025 / 1030

页数：6

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