Model for creep threshold stress in precipitation-strengthened alloys with coherent particles

被引：116

作者：

Marquis, EA ^{[1
]}

Dunand, DC ^{[1
]}

机构：

[1] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA

来源：

SCRIPTA MATERIALIA | 2002年 / 47卷 / 08期

基金：

美国能源部;

关键词：

creep; threshold stress; precipitation strengthening; aluminum alloys; dislocation mobility;

D O I：

10.1016/S1359-6462(02)00165-3

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The general climb model for creep threshold stress for dislocations interacting with incoherent particles is modified for the case of coherent precipitates, by taking into account elastic interactions between matrix dislocations and particles due to particle/matrix stiffness and lattice mismatches. The model is in qualitative agreement with experimental data for the Al-Sc system. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：503 / 508

页数：6

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