Instabilities and ductility of nanocrystalline and ultrafine-grained metals

被引：527

作者：

Ma, E ^{[1
]}

机构：

[1] Johns Hopkins Univ, GWC Whiting Sch Engn, Dept Mat Sci & Engn, Baltimore, MD 21218 USA

来源：

SCRIPTA MATERIALIA | 2003年 / 49卷 / 07期

基金：

美国国家科学基金会;

关键词：

nanocrystalline materials; ultratine-grained microstructure; ductility; plastic deformation; copper;

D O I：

10.1016/S1359-6462(03)00396-8

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

High-strength nanocrystalline (nc) and ultrafine-grained (ufg) metals often show much reduced room-temperature tensile ductility compared with their coarse-grained counterparts. We discuss the various plastic and/or failure instabilities the nc and ufg metals are susceptible to, and present strategies to enhance the ductility, especially in terms of improving the uniform tensile strain. (C) 2003 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：663 / 668

页数：6

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