IMECH-IR  > 力学所知识产出(1956-2008)
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.
Source PublicationPhysical Review Letters
2008
ISSN0031-9007
AbstractA 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.
KeywordCrack-tip Deformation Twins Fcc Metals Nucleation Dislocations Mechanism Copper
DOI10.1103/PhysRevLett.101.025503
Indexed BySCI ; EI
Language英语
WOS IDWOS:000257553700033
WOS KeywordCRACK-TIP ; DEFORMATION TWINS ; FCC METALS ; NUCLEATION ; DISLOCATIONS ; MECHANISM ; COPPER
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
Citation statistics
Cited Times:153[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/25966
Collection力学所知识产出(1956-2008)
Corresponding AuthorWu, 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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