| 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
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| Source Publication | Materials Science and Technology
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| 2011 | |
| Volume | 27Issue:1Pages:320-324 |
| ISSN | 0267-0836 |
| Abstract | 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. |
| Keyword | 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 |
| Subject Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| DOI | 10.1179/026708309X12506933873224 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000285870400055 |
| WOS Keyword | TENSILE PLASTIC-DEFORMATION ; GRAIN-BOUNDARY ; TEMPERATURE ; NICKEL ; MICROSTRUCTURE ; GROWTH ; METALS ; COPPER ; COBALT ; CREEP |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Funding Organization | 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. |
| Department | LNM材料介观力学性能的表征 |
| Classification | Q3 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/44954 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Dai, PQ (reprint author), Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Peoples R China |
| Recommended Citation 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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