Microstructural evolution and mechanical properties of a two-phase Cu-Ag alloy processed by high-pressure torsion to ultrahigh strains

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	Microstructural evolution and mechanical properties of a two-phase Cu-Ag alloy processed by high-pressure torsion to ultrahigh strains
	Y. Z. Tian; S. D. Wu; Z. F. Zhang; R. B. Figueiredo; N. Gao; T. G. Langdon
	2011
发表期刊	Acta Materialia
ISSN	1359-6454
卷号	59 期号:7 页码:2783-2796
摘要	Disks of a coarse-grained Cu-28 wt.% Ag alloy were processed by high-pressure torsion up to 20 revolutions to reveal the microstructural evolution and mechanical properties. The eutectic shows a faster evolution process than the Cu matrix. A banded structure forms in the Cu matrix, and both the eutectic spacing and the band width decrease with increasing shear strain. After 20 revolutions, the substructure may even diminish in the Cu matrix. The microhardness increases with increasing revolutions, and a saturation microhardness is ultimately achieved. After 20 revolutions, the tensile strength was improved to similar to 1420 MPa, and the failure mode of the sample was transferred from necking to full shearing without plasticity. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
部门归属	[tian, y. z.; wu, s. d.; zhang, z. f.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [figueiredo, r. b.] univ fed minas gerais, dept met & mat engn, br-31270901 belo horizonte, mg, brazil. [gao, n.; langdon, t. g.] univ southampton, sch engn sci, mat res grp, 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, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;zhfzhang@imr.ac.cn
关键词	Cu-ag Alloy High-pressure Torsion Microstructure Hardness Fracture Severe Plastic-deformation Grain-refinement Nanostructured Materials Tensile Properties Aluminum-alloy Pure Aluminum Homogeneity Strength Composites Metals
URL	查看原文
WOS记录号	WOS:000289131100021
引用统计	被引频次：111[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/321006/30712
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Z. Tian,S. D. Wu,Z. F. Zhang,et al. Microstructural evolution and mechanical properties of a two-phase Cu-Ag alloy processed by high-pressure torsion to ultrahigh strains[J]. Acta Materialia,2011,59(7):2783-2796.
APA	Y. Z. Tian,S. D. Wu,Z. F. Zhang,R. B. Figueiredo,N. Gao,&T. G. Langdon.(2011).Microstructural evolution and mechanical properties of a two-phase Cu-Ag alloy processed by high-pressure torsion to ultrahigh strains.Acta Materialia,59(7),2783-2796.
MLA	Y. Z. Tian,et al."Microstructural evolution and mechanical properties of a two-phase Cu-Ag alloy processed by high-pressure torsion to ultrahigh strains".Acta Materialia 59.7(2011):2783-2796.

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