Dislocation dynamics simulations of fatigue of precipitation-hardened materials

被引：23

作者：

Shin, CS

Fivel, MC

Verdier, M

Robertson, C

机构：

[1] CNRS, Inst Natl Polytech Grenoble, F-38402 St Martin Dheres, France

[2] CNRS, Inst Natl Polytech Grenoble, Thermodynam & Physicochim Met Lab, F-38402 St Martin Dheres, France

[3] SRMA Saclay, Commissariat Energie Atom, F-91191 Gif Sur Yvette, France

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2005年 / 400卷

关键词：

dislocations; plastic deformation; fatigue; parallelization;

D O I：

10.1016/j.msea.2005.01.079

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Fatigue tests of precipitation-hardened material are simulated in 3D using a new parallel discrete dislocation dynamics code. Simple geometries are used for the simulation volume and the particles. The evolution of the particle's strength by shearing-off is assumed in a simplified manner in order to study the effects of shearable and non-shearable particles on the formation of the PSBs. The simulated microstructural features of fatigue are in good qualitative agreement with experimental observations. Dislocation mechanisms for PSBs formation are detailed in this work. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：166 / 169

页数：4

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