Computer simulation of the strong surface effects on deformation behaviors of metallic glass nanowires

Guangping Zheng, H. Y. Zhang, J. H. Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)

Abstract

Size effects on deformation behaviors of metallic glass (MG) nanowires are found to be associated with their surface imperfections from phase-field modeling. Necking instead of shear banding is the dominant deformation mode in MG nanowire with diameter d < 100 nm, suggesting that nucleation and growth of the flow defects at the nanowire surface could be the deformation mechanism. The surface effect manifests itself by the finite-size scaling for the fracture strength and the critical intrinsic surface defect density.
Original languageEnglish
Pages (from-to)57-60
Number of pages4
JournalScripta Materialia
Volume90
Issue number1
DOIs
Publication statusPublished - 1 Jan 2014

Keywords

  • Fracture
  • Hall-Petch effect
  • Metallic glass
  • Phase-field model
  • Shear bands

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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