Evolution of initial grain boundaries and shear bands in Cu bicrystals during one-pass equal-channel angular pressing

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	Evolution of initial grain boundaries and shear bands in Cu bicrystals during one-pass equal-channel angular pressing
	W. Z. Han; H. J. Yang; X. H. An; R. Q. Yang; S. X. Li; S. D. Wu; Z. F. Zhang
	2009
发表期刊	Acta Materialia
ISSN	1359-6454
卷号	57 期号:4 页码:1132-1146
摘要	The evolution of grain boundaries (GBs) and shear bands in Cu bicrystals during one-pass equal-channel angular pressing (ECAP) was systematically investigated by various techniques. Four Cu bicrystals were designed to make GBs with angles of 0 degrees, 45 degrees, 90 degrees and 135 degrees with respect to the intersection plane (IP) of the ECAP die. After ECAP, the shear bands and the GB orientations in the four bicrystals displayed distinct behaviors due to the difference in the initial GB directions and the special crystallographic orientation of the component grains. Based on the experimental results, it is suggested that the initial GBs have a remarkable influence on the shear deformation behaviors of the adjacent regions. and the deformation regions far from the GBs are mainly controlled by the crystallographic orientations. The present investigations further demonstrate that shear deformation along the normal of the IP plays an important role in the deformation of Cu bicrystals. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
部门归属	[han, w. z.; yang, h. j.; an, x. h.; yang, r. q.; li, s. x.; wu, s. d.; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;wu, sd (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;shdwu@imr.ac.cn zhfzhang@imr.ac.cn
关键词	Cu Bicrystals Equal-channel Angular Pressing (Ecap) Grain Boundary (Gb) Shear Bands Severe Plastic-deformation Low-carbon Steel Single-crystals Nanostructured Materials Aluminum Bicrystals Texture Evolution Refinement Ecap Copper Microstructure
URL	查看原文
WOS记录号	WOS:000264248700018
引用统计	被引频次：31[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/321006/31945
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. Z. Han,H. J. Yang,X. H. An,et al. Evolution of initial grain boundaries and shear bands in Cu bicrystals during one-pass equal-channel angular pressing[J]. Acta Materialia,2009,57(4):1132-1146.
APA	W. Z. Han.,H. J. Yang.,X. H. An.,R. Q. Yang.,S. X. Li.,...&Z. F. Zhang.(2009).Evolution of initial grain boundaries and shear bands in Cu bicrystals during one-pass equal-channel angular pressing.Acta Materialia,57(4),1132-1146.
MLA	W. Z. Han,et al."Evolution of initial grain boundaries and shear bands in Cu bicrystals during one-pass equal-channel angular pressing".Acta Materialia 57.4(2009):1132-1146.