Study on nanocrystalline dual phase Ni-Co alloy with high strength and excellent ductility

doi:10.1179/026708309X12506933873224

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	Study on nanocrystalline dual phase Ni-Co alloy with high strength and excellent ductility
	Xu WC; Dai PQ; Wu XL(武晓雷); Tang D; Dai, PQ (reprint author), Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Peoples R China
发表期刊	Materials Science and Technology
	2011
卷号	27 期号:1 页码:320-324
ISSN	0267-0836
摘要	In the present study, the room temperature mechanical properties of nanocrystalline Ni and Ni-75 wt-%Co alloy, prepared by pulse electrodeposition, were contrasted. Both higher strength and higher ductility were obtained for the Ni-75% Co alloy with a dual phase structure and an average grain size of 7.2 nm. By means of TEM observations of grain structures before and after tensile deformation for Ni and Ni-75% Co samples, a link between the ductility and the variation of stress induced grain growth during tensile deformation was established. Observations of TEM showed stress induced grain growth during tensile deformation, subjected to very high stresses and large strains, is very insignificant for the Ni-75% Co alloy in sharp contrast to the significant stress induced grain growth occurring in Ni. It was proposed that suppression of stress induced grain growth during tensile deformation can delay and even prohibit formation of shear banding plastic instability and thus enhances uniform strain leading to an enhanced ductility.
关键词	Nanocrystalline Ni-co Mechanical Property Tensile Ductility Grain Growth Dual Phase Structure Tensile Plastic-deformation Grain-boundary Temperature Nickel Microstructure Growth Metals Copper Cobalt Creep
学科领域	Materials Science ; Metallurgy & Metallurgical Engineering
DOI	10.1179/026708309X12506933873224
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000285870400055
关键词[WOS]	TENSILE PLASTIC-DEFORMATION ; GRAIN-BOUNDARY ; TEMPERATURE ; NICKEL ; MICROSTRUCTURE ; GROWTH ; METALS ; COPPER ; COBALT ; CREEP
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
项目资助者	The financial support provided by the Innovation Project of Fuzhou University, the Foundations of Fujian Provincial Natural Science Research Programme (project no. 2008J0145-E0810006) and the National 863 Projects of China (project no. 2007AA03Z325) is gratefully acknowledged.
课题组名称	LNM材料介观力学性能的表征
论文分区	Q3
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/44954
专题	非线性力学国家重点实验室
通讯作者	Dai, PQ (reprint author), Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Peoples R China
推荐引用方式 GB/T 7714	Xu WC,Dai PQ,Wu XL,et al. Study on nanocrystalline dual phase Ni-Co alloy with high strength and excellent ductility[J]. Materials Science and Technology,2011,27,1,:320-324.
APA	Xu WC,Dai PQ,武晓雷,Tang D,&Dai, PQ .(2011).Study on nanocrystalline dual phase Ni-Co alloy with high strength and excellent ductility.Materials Science and Technology,27(1),320-324.
MLA	Xu WC,et al."Study on nanocrystalline dual phase Ni-Co alloy with high strength and excellent ductility".Materials Science and Technology 27.1(2011):320-324.

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