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
刊名	Acta Materialia
	2011
卷号	59 期号:7 页码:2783-2796
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
ISSN号	1359-6454
中文摘要	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.
原文出处	://WOS:000289131100021
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/30712]
专题	金属研究所_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.