A dislocation-based model for low-amplitude fatigue behaviour of face-centred cubic single crystals

被引：26
|
作者：
Depres, C. [1 ]
Fivel, M. [2 ]
Tabourot, L. [1 ]
机构：
[1] Univ Savoie, Lab Syst & Mat MEcartron, F-74944 Annecy Le Vieux, France
[2] Inst Natl Polytech Grenoble, Lab Sci & Ingn Mat & Procedes, CNRS, F-38402 St Martin Dheres, France
来源：
SCRIPTA MATERIALIA | 2008年 / 58卷 / 12期
关键词：
high-cycle fatigue; micromechanical modeling; dislocation dynamics;
D O I：
10.1016/j.scriptamat.2008.02.027
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A dislocation-based model intended to predict mechanical behaviour for low-amplitude fatigue loading is presented. It is based on a physical representation of the dislocation microstructure according to a statistical distribution of dislocation dipoles acting as efficient obstacles to plastic slip. This leads to a reduced set of equations that accurately predict the development of hysteresis loops during cycling. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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页码：1086 / 1089
页数：4
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