An enhanced FEM model for particle size dependent flow strengthening and interface damage in particle reinforced metal matrix composites

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	An enhanced FEM model for particle size dependent flow strengthening and interface damage in particle reinforced metal matrix composites
	J. C. Shao; B. L. Xiao; Q. Z. Wang; Z. Y. Ma; K. Yang
	2011
发表期刊	Composites Science and Technology
ISSN	0266-3538
卷号	71 期号:1 页码:39-45
摘要	By incorporating the dislocation punched zone model, the Taylor-based nonlocal theory of plasticity, and the cohesive zone model into the axisymmetric unit cell model, an enhanced FEM model is proposed in this paper to investigate the particle size dependent flow strengthening and interface damage in the particle reinforced metal matrix composites. The dislocation punched zone around a particle in the composite matrix is defined to consider the effect of geometrically necessary dislocations developed through a mismatch in the coefficients of the thermal expansion. The Taylor-based nonlocal theory of plasticity is applied to account for the effect of plastic strain gradient which produces geometrically necessary dislocations due to the geometrical mismatch between the matrix and the particle. The cohesive zone model is used to consider the effect of interfacial debonding. Lloyd's experimental data are used to verify this enhanced FEM model. In order to demonstrate flow strengthening mechanisms of the present model, we present the computational results of other different models and evaluate the strengthening effects of those models by comparison. Finally, the limitations of present model are pointed out for further development. (C) 2010 Elsevier Ltd. All rights reserved.
部门归属	[shao, j. c.; xiao, b. l.; wang, q. z.; ma, z. y.; yang, k.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;ma, zy (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;zyma@imr.ac.cn
关键词	Particle-reinforced Composites Debonding Strength Modeling Strain-gradient Plasticity Conventional Theory Behavior Deformation Aluminum Mechanisms
URL	查看原文
WOS记录号	WOS:000285904100007
引用统计	被引频次：126[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30645
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. C. Shao,B. L. Xiao,Q. Z. Wang,et al. An enhanced FEM model for particle size dependent flow strengthening and interface damage in particle reinforced metal matrix composites[J]. Composites Science and Technology,2011,71(1):39-45.
APA	J. C. Shao,B. L. Xiao,Q. Z. Wang,Z. Y. Ma,&K. Yang.(2011).An enhanced FEM model for particle size dependent flow strengthening and interface damage in particle reinforced metal matrix composites.Composites Science and Technology,71(1),39-45.
MLA	J. C. Shao,et al."An enhanced FEM model for particle size dependent flow strengthening and interface damage in particle reinforced metal matrix composites".Composites Science and Technology 71.1(2011):39-45.

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