Investigation on mechanical properties and size effect of nanocrystalline twin copper

CORC > 力学研究所 > 中国科学院力学研究所 > 力学所知识产出(1956-2008)

	Investigation on mechanical properties and size effect of nanocrystalline twin copper
	Wu B(吴波); Wei YG(魏悦广); Wu B; Wu B
刊名	Acta Metallurgica Sinica
	2007
通讯作者邮箱	wubo@lnm.imech.ac.cn
卷号	43 期号:12 页码:1245-1250
关键词	Cu Nano-Twin Mechanical Property Size Effect Finite Element Simulation Strain Gradient Plasticity Ni Multilayer System Conventional Theory Ultrahigh-Strength Metals
ISSN号	0412-1961
通讯作者	Wu B
中文摘要	The stress-strain relations of nanocrystalline twin copper with variously sized grains and twins are studied by using FEM simulations based on the conventional theory of mechanism-based strain gradient plasticity (CMSG). A model of twin lamellae strengthening zone is proposed and a cohesive interface model is used to simulate grain-boundary sliding and separation. Effects of material parameters on stress-strain curves of polycrystalline twin copper are studied in detail. Furthermore, the effects of both twin lamellar spacing and twin lamellar distribution on the stress-strain relations are investigated under tension loading. The numerical simulations show that both the strain gradient effect and the material hardening increase with decreasing the grain size and twin lamellar spacing. The distribution of twin lamellae has a significant influence on the overall mechanical properties, and the effect is reduced as both the grain size and twin lamellar spacing decrease. Finally, the FEM prediction results are compared with the experimental data.
收录类别	SCI
语种	英语
WOS记录号	WOS:000252302000003
公开日期	2009-08-03 ; 2010-06-13
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/33857]
专题	力学研究所_力学所知识产出(1956-2008)
通讯作者	Wu B; Wu B
推荐引用方式 GB/T 7714	Wu B,Wei YG,Wu B,et al. Investigation on mechanical properties and size effect of nanocrystalline twin copper[J]. Acta Metallurgica Sinica,2007,43(12):1245-1250.
APA	Wu B,Wei YG,Wu B,&Wu B.(2007).Investigation on mechanical properties and size effect of nanocrystalline twin copper.Acta Metallurgica Sinica,43(12),1245-1250.
MLA	Wu B,et al."Investigation on mechanical properties and size effect of nanocrystalline twin copper".Acta Metallurgica Sinica 43.12(2007):1245-1250.