Simulation of effects of grain scale on Al polycrystal strength using strain gradient plasticity concept

IMR OpenIR

	Simulation of effects of grain scale on Al polycrystal strength using strain gradient plasticity concept
	Zhou Li ; Li Shouxin ; Ke Wei
通讯作者	Zhou Li(lizhou@imr.ac.cn)
	2006-07-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	42 期号:7 页码:781-784
摘要	By using the classical plasticity theory and the micro-mechanism-based strain gradient (MSG) plasticity theory, the stress-strain relationships of Al polycrystals with different grain sizes were simulated. The results indicated that the work hardening in the stress strain curves predicted by the strain gradient constitutive equation evidently increases with the decrease of grain size. The stress-strain curve for the polycrystal with grain diameter d=20 mu m is slightly above that predicted by classical plasticity theory, showing further that with the increase of grain size the contribution of strain gradient is decreased. At the same time, the fitting curve of the yield strength vs grain size is comparatively consistent with the Hall-Petch ralationshop.
关键词	strain gradient plasticity classical plasticity finite element Al polycrystal scale effect
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000239402500019
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：2[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/321006/86663
专题	中国科学院金属研究所
通讯作者	Zhou Li
作者单位	1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Shenyang Ligong Univ, Dept Mech Engn, Shenyang 110168, Peoples R China 3.Chinese Acad Sci, State Key Lab Corros & Protect, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhou Li,Li Shouxin,Ke Wei. Simulation of effects of grain scale on Al polycrystal strength using strain gradient plasticity concept[J]. ACTA METALLURGICA SINICA,2006,42(7):781-784.
APA	Zhou Li,Li Shouxin,&Ke Wei.(2006).Simulation of effects of grain scale on Al polycrystal strength using strain gradient plasticity concept.ACTA METALLURGICA SINICA,42(7),781-784.
MLA	Zhou Li,et al."Simulation of effects of grain scale on Al polycrystal strength using strain gradient plasticity concept".ACTA METALLURGICA SINICA 42.7(2006):781-784.