Simulation of effects of particle size and volume fraction on Al alloy strength, elongation, and toughness by using strain gradient plasticity concept

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	Simulation of effects of particle size and volume fraction on Al alloy strength, elongation, and toughness by using strain gradient plasticity concept
	L. Zhou; S. X. Li; S. T. Huang
	2011
发表期刊	Materials & Design
ISSN	0261-3069
卷号	32 期号:1 页码:353-360
摘要	By using the constitutive equation based on the mechanism-based strain gradient plasticity with finite element software, the yield strength, uniform elongation, and toughness of aluminum alloy 6063 with different grain sizes, different particle diameters and volume fractions were studied numerically. The toughness is defined as the product of yield strength and uniform elongation. The calculation results indicate that the grain refinement and particle refinement cannot substantially improve the uniform elongation but can increase the yield strength of Al alloy when the grain size is on the order of the micron and submicron scale. When the grain size less than 2 mu m, Al alloys usually exhibit high strength and low uniform elongation, and when the grain size greater than 5 mu m, the materials exhibit low strength and high elongation; in either case the toughness is low. However, in the grain size of several micrometers, the toughness of Al alloy is the highest. (C) 2010 Elsevier Ltd. All rights reserved.
部门归属	[zhou, li; li, shouxin; huang, shutao] shenyang ligong univ, dept mech engn, shenyang 110159, peoples r china. [zhou, li] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;zhou, l (reprint author), shenyang ligong univ, dept mech engn, shenyang 110159, peoples r china;lizhou@imr.ac.cn
关键词	Ultrafine-grained Aluminum Conventional Theory Matrix Composites Microbend Test Indentation Fracture Deformation
URL	查看原文
WOS记录号	WOS:000282242300042
引用统计	被引频次：22[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/321006/30985
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. Zhou,S. X. Li,S. T. Huang. Simulation of effects of particle size and volume fraction on Al alloy strength, elongation, and toughness by using strain gradient plasticity concept[J]. Materials & Design,2011,32(1):353-360.
APA	L. Zhou,S. X. Li,&S. T. Huang.(2011).Simulation of effects of particle size and volume fraction on Al alloy strength, elongation, and toughness by using strain gradient plasticity concept.Materials & Design,32(1),353-360.
MLA	L. Zhou,et al."Simulation of effects of particle size and volume fraction on Al alloy strength, elongation, and toughness by using strain gradient plasticity concept".Materials & Design 32.1(2011):353-360.