Mechanical properties and rolling behaviors of nano-grained copper with embedded nano-twin bundles

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	Mechanical properties and rolling behaviors of nano-grained copper with embedded nano-twin bundles; Mechanical properties and rolling behaviors of nano-grained copper with embedded nano-twin bundles
	Y. Zhang; N. R. Tao; K. Lu
	2008 ; 2008
发表期刊	Acta Materialia ; Acta Materialia
ISSN	1359-6454 ; 1359-6454
卷号	56 期号:11 页码:2429-2440
摘要	By means of dynamic plastic deformation (DPD) at liquid nitrogen temperature (LNT), bulk nano-grained copper samples with embedded nano-twin bundles were prepared. Subsequent cold rolling (CR) of the LNT-DPD Cu led to a reduction in quantity of 2 nano-twin bundles and a slight grain coarsening, accompanied by a decrease in grain boundary (GB) energy from 0.34 to 0.22 J m(-2). increasing CR strain leads to a saturation grain size of similar to 110 nm, which is less than half of that in the severely deformed Cu from the coarse-grained form. Decreased strength and enhanced ductility were induced by CR in the LNT-DPD sample. The saturation yield strength in the LNT-DPD Cu during CR was similar to 105 MPa higher than that in conventional severely deformed Cu, which originates from the finer grains as well as the nano-scale twins in the LNT-DPD sample. The enhanced ductility is primarily attributed to CR induced GB relaxation. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.; By means of dynamic plastic deformation (DPD) at liquid nitrogen temperature (LNT), bulk nano-grained copper samples with embedded nano-twin bundles were prepared. Subsequent cold rolling (CR) of the LNT-DPD Cu led to a reduction in quantity of 2 nano-twin bundles and a slight grain coarsening, accompanied by a decrease in grain boundary (GB) energy from 0.34 to 0.22 J m(-2). increasing CR strain leads to a saturation grain size of similar to 110 nm, which is less than half of that in the severely deformed Cu from the coarse-grained form. Decreased strength and enhanced ductility were induced by CR in the LNT-DPD sample. The saturation yield strength in the LNT-DPD Cu during CR was similar to 105 MPa higher than that in conventional severely deformed Cu, which originates from the finer grains as well as the nano-scale twins in the LNT-DPD sample. The enhanced ductility is primarily attributed to CR induced GB relaxation. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
部门归属	[zhang, y.; 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, wenhua rd 72, shenyang 110016, peoples r china;nrtao@imr.ac.cn lu@imr.ac.cn ; [zhang, y.; 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, wenhua rd 72, shenyang 110016, peoples r china;nrtao@imr.ac.cn lu@imr.ac.cn
关键词	Nanostructured Materials Nanostructured Materials Nano-scale Twins Nano-scale Twins Dynamic Plastic Deformation Dynamic Plastic Deformation Grain Boundary Energy Grain Boundary Energy Mechanical Properties Mechanical Properties Severe Plastic-deformation Severe Plastic-deformation High Electrical-conductivity High Electrical-conductivity Stacking-fault Stacking-fault Energy Energy Microstructural Evolution Microstructural Evolution Nanocrystalline Metals Nanocrystalline Metals Nanostructured Metals Nanostructured Metals Nanoscale Twins Nanoscale Twins Scale Twins Scale Twins Ductility Ductility Strength Strength
URL	查看原文 ; 查看原文
WOS记录号	WOS:000257367800002 ; WOS:000257367800002
引用统计	被引频次：220[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/321006/33347
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Zhang,N. R. Tao,K. Lu. Mechanical properties and rolling behaviors of nano-grained copper with embedded nano-twin bundles, Mechanical properties and rolling behaviors of nano-grained copper with embedded nano-twin bundles[J]. Acta Materialia, Acta Materialia,2008, 2008,56, 56(11):2429-2440, 2429-2440.
APA	Y. Zhang,N. R. Tao,&K. Lu.(2008).Mechanical properties and rolling behaviors of nano-grained copper with embedded nano-twin bundles.Acta Materialia,56(11),2429-2440.
MLA	Y. Zhang,et al."Mechanical properties and rolling behaviors of nano-grained copper with embedded nano-twin bundles".Acta Materialia 56.11(2008):2429-2440.