A modified model for deformation via partial dislocations and stacking faults at the nanoscale

The partial dislocation model for the deformation mechanism of nanocrystalline materials is extended to consider the influence of non-uniform dislocation extension. The non-uniform partial dislocation extension model is more consistent with experimental data than the original partial dislocation mod...

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Bibliographic Details
Published inScripta materialia Vol. 62; no. 6; pp. 361 - 364
Main Authors Gu, Pei, Kad, Bimal K., Dao, Ming
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.03.2010
Subjects
Flow stress
Nanocrystalline material
Partial dislocation
Stacking fault
Stacking fault
Nanocrystalline material
Partial dislocation
Flow stress
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Summary:The partial dislocation model for the deformation mechanism of nanocrystalline materials is extended to consider the influence of non-uniform dislocation extension. The non-uniform partial dislocation extension model is more consistent with experimental data than the original partial dislocation model. Additionally, the flow stress obtained from the non-uniform extension model is compared with that from the Hall–Petch relation.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2009.10.035