Critical grain size for dislocation storage and consequences for strain hardening of nanocrystalline materials

被引：103

作者：

Bouaziz, O. ^{[1
,2
]}

Estrin, Y. ^{[3
,4
]}

Brechet, Y. ^{[5
]}

Embury, J. D. ^{[6
]}

机构：

[1] ArcelorMittal Res, Automot Ctr, F-57283 Maizieres Les Metz, France

[2] CNRS, UMR 7633, Ecole Mines Paris, Ctr Mat, F-91003 Evry, France

[3] Monash Univ, Dept Mat Engn, ARC Ctr Excellence Design Light Met, Clayton, Vic 3800, Australia

[4] CSIRO Div Proc Sci & Engn, Clayton, Vic 3169, Australia

[5] SIMAP, F-38402 St Martin Dheres, France

[6] McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON, Canada

来源：

SCRIPTA MATERIALIA | 2010年 / 63卷 / 05期

关键词：

Strain hardening; Nanostructure; Dislocations; Diffusion; METALS; NUCLEATION; COPPER;

D O I：

10.1016/j.scriptamat.2010.05.006

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We consider strain hardening of nanostructured materials and propose a physically based interpretation of their low strain hardening capability in terms of a reduced storage rate of dislocations The model suggested provides a modification of the Kocks-Mecking-Estrin evolution law for dislocation storage for nanostructured materials and predicts a critical grain size below which the strain hardening rate drops off (C) 2010 Published by Elsevier Ltd on behalf of Acta Materialia Inc

引用

页码：477 / 479

页数：3

共 12 条

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