Size effects of shear deformation response for nano-single crystals examined by the phase-field-crystal model

Wenquan Zhou, Jincheng Wang, Zhijun Wang, Qi Zhang, Can Guo, Junjie Li, Yaolin Guo

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Employing the modified phase-field-crystal (MPFC) model, we investigated the size effects of shear deformation response on nano-single crystals by examining the elastic strain distribution at atomistic scales. Here, three specimens with different aspect ratios are explored. Three types of shear deformation behavior have been found, namely, bending, simple shear and the mixed-mode based on the competition of bending and shearing. Further, a size scale analysis indicates that the slope of the shear strain response curve decreased dramatically as the aspect ratio changed from 1 to 0.125. However, when the ratio increased from 1 to 8, the slope increased slowly until saturated.

Original languageEnglish
Pages (from-to)121-127
Number of pages7
JournalComputational Materials Science
Volume127
DOIs
StatePublished - 1 Feb 2017

Keywords

  • Aspect ratios
  • Modified phase-field-crystal model
  • Nano-single crystal
  • Size effects
  • Strain distribution

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