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| New Deformation Twinning Mechanism Generates Zero Macroscopic Strain In Nanocrystalline Metals | |
Wu XL(武晓雷) ; Liao XZ; Srinivasan SG; Zhou F; Lavernia EJ; Valiev RZ; Zhu YT; Srinivasan, SG (reprint author), Los Alamos Natl Lab, Mat Sci & Technol Div, POB 1663, Los Alamos, NM 87544 USA.
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| Source Publication | Physical Review Letters
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| 2008 | |
| ISSN | 0031-9007 |
| Abstract | Macroscopic strain was hitherto considered a necessary corollary of deformation twinning in coarse-grained metals. Recently, twinning has been found to be a preeminent deformation mechanism in nanocrystalline face-centered-cubic (fcc) metals with medium-to-high stacking fault energies. Here we report a surprising discovery that the vast majority of deformation twins in nanocrystalline Al, Ni, and Cu, contrary to popular belief, yield zero net macroscopic strain. We propose a new twinning mechanism, random activation of partials, to explain this unusual phenomenon. The random activation of partials mechanism appears to be the most plausible mechanism and may be unique to nanocrystalline fcc metals with implications for their deformation behavior and mechanical properties. |
| Keyword | Molecular-dynamics Simulation Aluminum Twins Crystals |
| DOI | 10.1103/PhysRevLett.100.095701 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000253764500046 |
| WOS Keyword | MOLECULAR-DYNAMICS SIMULATION ; ALUMINUM ; TWINS ; CRYSTALS |
| WOS Research Area | Physics |
| WOS Subject | Physics, Multidisciplinary |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/26116 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Srinivasan, SG (reprint author), Los Alamos Natl Lab, Mat Sci & Technol Div, POB 1663, Los Alamos, NM 87544 USA. |
| Recommended Citation GB/T 7714 | Wu XL,Liao XZ,Srinivasan SG,et al. New Deformation Twinning Mechanism Generates Zero Macroscopic Strain In Nanocrystalline Metals[J]. Physical Review Letters,2008. |
| APA | 武晓雷.,Liao XZ.,Srinivasan SG.,Zhou F.,Lavernia EJ.,...&Srinivasan, SG .(2008).New Deformation Twinning Mechanism Generates Zero Macroscopic Strain In Nanocrystalline Metals.Physical Review Letters. |
| MLA | 武晓雷,et al."New Deformation Twinning Mechanism Generates Zero Macroscopic Strain In Nanocrystalline Metals".Physical Review Letters (2008). |
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