| Plastic Deformation Of Nanocrystalline Nickel | |
Wu XL(武晓雷) ; Wu XL
| |
| Source Publication | Science in China Series E-Technological Sciences
 |
| 2009 | |
| Volume | 52Issue:8Pages:2216-2221 |
| ISSN | 1006-9321 |
| Abstract | A high-resolution electron microscopy study has uncovered the plastic behavior of accommodating large strains in nanocrystalline (NC) Ni subject to cold rolling at liquid nitrogen temperature. The activation of grain-boundary-mediated-plasticity is evidenced in NC-Ni, including twinning and formation of stacking fault via partial dislocation slips from the grain boundary. The formation and storage of 60A degrees full dislocations are observed inside NC-grains. The grain/twin boundaries act as the barriers of dislocation slips, leading to dislocation pile-up, severe lattice distortion, and formation of sub-grain boundary. The vicinity of grain/twin boundary is where defects preferentially accumulate and likely the favorable place for onset of plastic deformation. The present results indicate the heterogeneous and multiple natures of accommodating plastic strains in NC-grains. |
| Keyword | Nanocrystalline Metal Plastic Deformation Deformation Twinning Dislocation Microstructure Molecular-dynamics Simulation Ultrahigh Strength Copper Metals Aluminum Maximum |
| DOI | 10.1007/s11431-009-0224-z |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000267593200014 |
| WOS Keyword | MOLECULAR-DYNAMICS SIMULATION ; ULTRAHIGH STRENGTH ; COPPER ; METALS ; ALUMINUM ; MAXIMUM |
| WOS Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Multidisciplinary ; Materials Science, Multidisciplinary |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/26568 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Wu XL |
| Recommended Citation GB/T 7714 | Wu XL,Wu XL. Plastic Deformation Of Nanocrystalline Nickel[J]. Science in China Series E-Technological Sciences,2009,52,8,:2216-2221. |
| APA | 武晓雷,&Wu XL.(2009).Plastic Deformation Of Nanocrystalline Nickel.Science in China Series E-Technological Sciences,52(8),2216-2221. |
| MLA | 武晓雷,et al."Plastic Deformation Of Nanocrystalline Nickel".Science in China Series E-Technological Sciences 52.8(2009):2216-2221. |
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