Deformation behaviour of electrodeposited nanocrystalline Ni with broad grain size distribution
文献类型：期刊论文
| 作者 | Xu WC; Dai PQ; Wu XL(武晓雷)
|
| 刊名 | Materials Science and Technology
 |
| 出版日期 | 2010 |
| 卷号 | 26期号:5页码:591-596 |
| 通讯作者邮箱 | pqdai@126.com |
| ISSN号 | 0267-0836 |
| 通讯作者 | Dai PQ |
| 中文摘要 | In the present work, nanocrystalline Ni (nc-Ni) with a broad grain size distribution (BGSD) of 5-120 nm and an average grain size of 27.2 nm was prepared. The BGSD nc-Ni sample shows a similar strength and good ductility in comparison with electrodeposited nc-Ni with a narrow grain size distribution. The intracrystalline dislocation network was observed in the post-deformed microstructure confirming the conventional intracrystalline dislocation sliding mechanism in BGSD nc-Ni. The uniaxial tensile loading-unloading-loading deformation shows BGSD nc-Ni has the capability to store dislocations in the grain interior, which is very limited compared with that of coarse grained metals. For BGSD nc-Ni, the strain rate sensitivity of flow stress m enhances with decreasing strain rate. At the strain rate of 5 x 10(-6) s(-1), m was estimated to be 0.055. At the corresponding strain rate, the enhanced ductility along with the decreased strength was achievable, indicating activation of other deformation mechanisms, e. g. grain boundary sliding or diffusion. |
| 类目[WOS] | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 研究领域[WOS] | Materials Science ; Metallurgy & Metallurgical Engineering |
| 关键词[WOS] | NANOSTRUCTURED METAL ; TENSILE DUCTILITY ; COPPER ; MECHANISMS ; STRENGTH ; NICKEL ; CU |
| 收录类别 | SCI |
| 资助信息 | Fuzhou University; Foundation of Fujian [2008J0145-E0810006]; National 863 projects of China [2007AA032325] |
| 原文出处 | http://docserver.ingentaconnect.com/deliver/connect/maney/02670836/v26n5/s14.pdf?expires=1301046583&id=61919908&titleid=3774&accname=Institute+of+Mechanics%2C+CAS&checksum=E05E6C43E552EEFD3AB59970317E19B9 |
| 语种 | 英语 |
| WOS记录号 | WOS:000278470500014 |
| 公开日期 | 2011-03-01 ; 2011-03-30 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/43505]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Xu WC,Dai PQ,Wu XL. Deformation behaviour of electrodeposited nanocrystalline Ni with broad grain size distribution[J]. Materials Science and Technology,2010,26(5):591-596. |
| APA | Xu WC,Dai PQ,&武晓雷.(2010).Deformation behaviour of electrodeposited nanocrystalline Ni with broad grain size distribution.Materials Science and Technology,26(5),591-596. |
| MLA | Xu WC,et al."Deformation behaviour of electrodeposited nanocrystalline Ni with broad grain size distribution".Materials Science and Technology 26.5(2010):591-596. |
入库方式： OAI收割
来源：力学研究所
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