High tensile ductility via enhanced strain hardening in ultrafine-grained Cu

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	High tensile ductility via enhanced strain hardening in ultrafine-grained Cu
	P. Xue; B. L. Xiao; Z. Y. Ma
	2012
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	532 页码:106-110
摘要	Low tensile ductility owing to the insufficient strain hardening is the main drawback for ultrafine-grained (UFG) materials, which restricts their practical applications. Here, via a simple friction stir processing technique with additional cooling, we prepared UFG Cu with high strength and tensile ductility. Enhanced strain hardening capacity, which is effective in blocking and accumulating dislocations, was achieved in the present recrystallized UFG microstructure. The enhanced strain hardening capacity is attributed primarily to the low dislocation density, and the presence of large fraction of high angle grain boundaries and a certain amount of coherent twin boundaries. This work provides a strategy for designing UFG materials with good mechanical properties. (C) 2011 Elsevier B.V. All rights reserved.
部门归属	[xue, p.; xiao, b. l.; ma, z. y.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;ma, zy (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china.;zyma@imr.ac.cn
关键词	Copper Grain Boundaries Ductility Dynamic Recrystallization Friction Stir Processing Severe Plastic-deformation Bulk Nanostructured Materials Mechanical-behavior Aluminum-alloys Metals Nanocrystalline Strength Copper
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60378
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	P. Xue,B. L. Xiao,Z. Y. Ma. High tensile ductility via enhanced strain hardening in ultrafine-grained Cu[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2012,532:106-110.
APA	P. Xue,B. L. Xiao,&Z. Y. Ma.(2012).High tensile ductility via enhanced strain hardening in ultrafine-grained Cu.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,532,106-110.
MLA	P. Xue,et al."High tensile ductility via enhanced strain hardening in ultrafine-grained Cu".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 532(2012):106-110.