Achieving homogeneity in a two-phase Cu-Ag composite during high-pressure torsion

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	Achieving homogeneity in a two-phase Cu-Ag composite during high-pressure torsion
	Y. Z. Tian; Z. F. Zhang; T. G. Langdon
	2013
发表期刊	Journal of Materials Science
ISSN	0022-2461
卷号	48 期号:13 页码:4606-4612
摘要	A Cu-8 wt%Ag alloy was processed at room temperature either by high-pressure torsion (HPT) or using a two-step deformation mode of equal-channel angular pressing (ECAP) and HPT. After HPT deformation, different flow patterns were observed on the disk surface without any post-deformation treatment thereby indicating an inhomogeneous shearing deformation. The microhardness distributions throughout the disks were compared after the two different processing routes. It is shown that the microhardness remains very low near the center of the disk although saturated in the outer regions after 10 revolutions. By contrast, an intrinsically homogeneous microhardness may be attained throughout the disk after the two-step deformation of ECAP and HPT. This study suggests a convenient procedure for achieving full homogeneity in high-strength materials during HPT processing.
部门归属	[tian, y. z. ; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [langdon, t. g.] univ southampton, mat res grp, fac engn & environm, southampton so17 1bj, hants, england. [langdon, t. g.] univ so calif, dept aerosp & mech engn, los angeles, ca 90089 usa. [langdon, t. g.] univ so calif, dept mat sci, los angeles, ca 90089 usa. ; zhang, zf (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china. ; yztian@alum.imr.ac.cn ; zhfzhang@imr.ac.cn
关键词	Severe Plastic-deformation Microstructural Evolution Mechanical-properties Refinement Patterns Behavior Alloys
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71506
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Z. Tian,Z. F. Zhang,T. G. Langdon. Achieving homogeneity in a two-phase Cu-Ag composite during high-pressure torsion[J]. Journal of Materials Science,2013,48(13):4606-4612.
APA	Y. Z. Tian,Z. F. Zhang,&T. G. Langdon.(2013).Achieving homogeneity in a two-phase Cu-Ag composite during high-pressure torsion.Journal of Materials Science,48(13),4606-4612.
MLA	Y. Z. Tian,et al."Achieving homogeneity in a two-phase Cu-Ag composite during high-pressure torsion".Journal of Materials Science 48.13(2013):4606-4612.