Knowledge Management System of Institue of Mechanics, CAS
| Inverse Grain-Size Effect On Twinning In Nanocrystalline Ni | |
Wu XL(武晓雷) ; Zhu YT; Wu, XL (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
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| Source Publication | Physical Review Letters
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| 2008 | |
| ISSN | 0031-9007 |
| Abstract | A long-standing controversy exists between molecular dynamics simulations and experiments on the twinning propensity of nanocrystalline (NC) face-centered-cubic metals. For example, three-dimensional molecular dynamics simulations rarely observed twins in NC Ni, whereas experiments readily observed them. Here this discrepancy is resolved by experimental observation of an inverse grain-size effect on twinning. Specifically, decreasing the grain size first promotes twinning in NC Ni and then hinders twinning due to the inverse grain-size effect. Interestingly, no inverse grain-size effect exists on stacking fault formation. These observations are explained by generalized planar fault energies and grain-size effect on partial emissions. |
| Keyword | Crack-tip Deformation Twins Fcc Metals Nucleation Dislocations Mechanism Copper |
| DOI | 10.1103/PhysRevLett.101.025503 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000257553700033 |
| WOS Keyword | CRACK-TIP ; DEFORMATION TWINS ; FCC METALS ; NUCLEATION ; DISLOCATIONS ; MECHANISM ; COPPER |
| WOS Research Area | Physics |
| WOS Subject | Physics, Multidisciplinary |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/25966 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Wu, XL (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| Recommended Citation GB/T 7714 | Wu XL,Zhu YT,Wu, XL . Inverse Grain-Size Effect On Twinning In Nanocrystalline Ni[J]. Physical Review Letters,2008. |
| APA | 武晓雷,Zhu YT,&Wu, XL .(2008).Inverse Grain-Size Effect On Twinning In Nanocrystalline Ni.Physical Review Letters. |
| MLA | 武晓雷,et al."Inverse Grain-Size Effect On Twinning In Nanocrystalline Ni".Physical Review Letters (2008). |
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