Microstructures and mechanical properties of a Cu-Zn alloy subjected to cryogenic dynamic plastic deformation

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	Microstructures and mechanical properties of a Cu-Zn alloy subjected to cryogenic dynamic plastic deformation
	G. H. Xiao; N. R. Tao; K. Lu
	2009
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	513-14 页码:13-21
摘要	The microstructures and mechanical properties of a Cu-Zn alloy subjected to dynamic plastic deformation (DPD) at liquid nitrogen temperature (77 K) were investigated. The planar dislocation activities, deformation twinning and shear banding dominate the plastic deformation of samples with different strains, respectively. Twin boundary spacing decreases with strain and nearly saturates when the strain exceeds 1.2. Shear bands occur within high-density twin region at higher strains, inside which nano-sized grains are formed. Tensile tests show that the DPD brass exhibits a high strength and a limited tensile ductility. Deformation twins play an important role in the strengthening while the appearance of shear bands obviously reduces the ductility of materials. (C) 2009 Elsevier B.V. All rights reserved.
部门归属	[xiao, g. h.; tao, n. r.; lu, k.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;tao, nr (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;nrtao@imr.ac.cn
关键词	Cu-zn Alloy Dynamic Plastic Deformation Nano-scale Twins Shear Band Nanograin Stacking-fault Energy Shear-band Formation Nanostructure Formation Strain Compression Grained Cu Copper Strength Evolution Twins Nanocrystalline
URL	查看原文
WOS记录号	WOS:000266577400003
引用统计	被引频次：106[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/321006/32444
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. H. Xiao,N. R. Tao,K. Lu. Microstructures and mechanical properties of a Cu-Zn alloy subjected to cryogenic dynamic plastic deformation[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2009,513-14:13-21.
APA	G. H. Xiao,N. R. Tao,&K. Lu.(2009).Microstructures and mechanical properties of a Cu-Zn alloy subjected to cryogenic dynamic plastic deformation.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,513-14,13-21.
MLA	G. H. Xiao,et al."Microstructures and mechanical properties of a Cu-Zn alloy subjected to cryogenic dynamic plastic deformation".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 513-14(2009):13-21.