The effect of particle shape on ductility of SiCp reinforced 6061 Al matrix composites

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	The effect of particle shape on ductility of SiCp reinforced 6061 Al matrix composites; The effect of particle shape on ductility of SiCp reinforced 6061 Al matrix composites
	S. Y. Qin; C. R. Chen; G. D. Zhang; W. L. Wang; Z. G. Wang
	1999 ; 1999
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing ; Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093 ; 0921-5093
卷号	272 期号:2 页码:363-370
摘要	To study the effect of particle shape on thermal residual stress and strain distributions in composites, five two-dimension SiCp/6061Al model composites reinforced with spherical, hexagon, square, triangle and shuttle-shaped particles, respectively were analyzed by finite element method (FEM). The results showed that the particle shape has a great effect on thermal residual stress and strain fields in composites. There are a residual plastic strain concentration in the matrix around a pointed particle corner and a serious residual stress concentration in the pointed particle corner. The two concentrations increase with decreasing pointed corner degree. When an external stress is applied, the plastic strain concentration in the matrix around the pointed particle corner and the serious stress concentration in the pointed particle corner which will fracture on a relative low level of applied stress can decrease ductility of the composite. Two 6061 aluminium alloy matrix composites reinforced with general SiC particles and blunted SiC particles were studied on the basis of the FEM analyses. It was found that most very pointed particle corners are eliminated after SiC particles being blunted. Replacing general SiC particles with blunted ones can reduce residual plastic strain concentrations in the matrix and serious residual stress concentration in the particle. Therefore, blunted SiC particles reinforced composite shows a higher ductility than general one. (C) 1999 Elsevier Science S.A. All rights reserved.; To study the effect of particle shape on thermal residual stress and strain distributions in composites, five two-dimension SiCp/6061Al model composites reinforced with spherical, hexagon, square, triangle and shuttle-shaped particles, respectively were analyzed by finite element method (FEM). The results showed that the particle shape has a great effect on thermal residual stress and strain fields in composites. There are a residual plastic strain concentration in the matrix around a pointed particle corner and a serious residual stress concentration in the pointed particle corner. The two concentrations increase with decreasing pointed corner degree. When an external stress is applied, the plastic strain concentration in the matrix around the pointed particle corner and the serious stress concentration in the pointed particle corner which will fracture on a relative low level of applied stress can decrease ductility of the composite. Two 6061 aluminium alloy matrix composites reinforced with general SiC particles and blunted SiC particles were studied on the basis of the FEM analyses. It was found that most very pointed particle corners are eliminated after SiC particles being blunted. Replacing general SiC particles with blunted ones can reduce residual plastic strain concentrations in the matrix and serious residual stress concentration in the particle. Therefore, blunted SiC particles reinforced composite shows a higher ductility than general one. (C) 1999 Elsevier Science S.A. All rights reserved.
部门归属	shanghai jiao tong univ, state key lab met matrix composites, shanghai 200030, peoples r china. acad sinica, inst met res, state key lab fatigue & fracture mat, shenyang 110015, peoples r china.;qin, sy (reprint author), shanghai jiao tong univ, state key lab met matrix composites, 1954 huashan rd, shanghai 200030, peoples r china ; shanghai jiao tong univ, state key lab met matrix composites, shanghai 200030, peoples r china. acad sinica, inst met res, state key lab fatigue & fracture mat, shenyang 110015, peoples r china.;qin, sy (reprint author), shanghai jiao tong univ, state key lab met matrix composites, 1954 huashan rd, shanghai 200030, peoples r china
关键词	Metal Matrix Composite Metal Matrix Composite Ductility Ductility Particle Shape Particle Shape Finite Element Finite Element Method Method Thermal Residual Stress Thermal Residual Stress Mechanical-properties Mechanical-properties Fracture-toughness Fracture-toughness Stress-strain Stress-strain Particulate Particulate Microstructure Microstructure Behavior Behavior Deformation Deformation Alloy Alloy Size Size
URL	查看原文 ; 查看原文
WOS记录号	WOS:000083785900016 ; WOS:000083785900016
引用统计	被引频次：122[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/321006/37476
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. Y. Qin,C. R. Chen,G. D. Zhang,et al. The effect of particle shape on ductility of SiCp reinforced 6061 Al matrix composites, The effect of particle shape on ductility of SiCp reinforced 6061 Al matrix composites[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing, Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,1999, 1999,272, 272(2):363-370, 363-370.
APA	S. Y. Qin,C. R. Chen,G. D. Zhang,W. L. Wang,&Z. G. Wang.(1999).The effect of particle shape on ductility of SiCp reinforced 6061 Al matrix composites.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,272(2),363-370.
MLA	S. Y. Qin,et al."The effect of particle shape on ductility of SiCp reinforced 6061 Al matrix composites".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 272.2(1999):363-370.