IMECH-IR  > 力学所知识产出(1956-2008)
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.
Source PublicationPhysical Review Letters
2008
ISSN0031-9007
AbstractMacroscopic 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.
KeywordMolecular-dynamics Simulation Aluminum Twins Crystals
DOI10.1103/PhysRevLett.100.095701
Indexed BySCI ; EI
Language英语
WOS IDWOS:000253764500046
WOS KeywordMOLECULAR-DYNAMICS SIMULATION ; ALUMINUM ; TWINS ; CRYSTALS
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
Citation statistics
Cited Times:130[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/26116
Collection力学所知识产出(1956-2008)
Corresponding AuthorSrinivasan, 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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