The influence of the free surface on the fracture of alumina particles in an Al-Al2O3 metal-matrix composite

被引：12

作者：

Borbély, A

Biermann, H

Hartmann, O

Buffière, JY

机构：

[1] Tech Univ Bergakad Freiberg, Inst Werkstofftech, D-09599 Freiberg, Germany

[2] Univ Erlangen Nurnberg, Inst Werkstoffwissensch, Lehrstuhl 1, D-91058 Erlangen, Germany

[3] Inst Natl Sci Appl, Lab GEMPPM UMR CNRS 5510, F-69621 Villeurbanne, France

来源：

COMPUTATIONAL MATERIALS SCIENCE | 2003年 / 26卷

关键词：

metal-matrix composites; microtomography; damage; finite element method;

D O I：

10.1016/S0927-0256(02)00397-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of the free surface on the load carried by elastic inclusions embedded in an elastic-plastic matrix was investigated by the finite element method. A 2D multi-particle model was developed based on the statistical evaluation of the microstructure of a commercial metal-matrix composite. The results of simulated tensile tests show that the average particle stresses are sensitive to the adopted boundary conditions. Inclusions near a free boundary carry in general smaller loads than the inclusions in the bulk. Damage predictions of the model are in good agreement with the experimental data obtained by X-ray microtomography. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

收藏

页码：183 / 188

页数：6

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