Three-dimensional phase-field simulation on the deformation of metallic glass nanowires

Guangping Zheng, H. Y. Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

It is very challenging to investigate the deformation mechanisms in micro- and nano-scale metallic glasses with diameters below several hundred nanometers using the atomistic simulation or the experimental approaches. In this work, we develop the fully three-dimensional phase-field model to bridge this gap and investigate the sample size effects on the deformation behaviors of metallic glass nanowires. The initial deformation defects on the surface are found to significantly affect the mechanical strength and deformation mode of nanowires. The improved ductility of metallic glass nanowires could be related with the multiple shear bands initiated from the nanowire surfaces.
Original languageEnglish
Pages (from-to)S102-S107
JournalJournal of Alloys and Compounds
Volume615
Issue numberS1
DOIs
Publication statusPublished - 15 Jan 2015

Keywords

  • Ductility
  • Metallic glasses
  • Nanowires
  • Phase-field modeling
  • Shear banding

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys

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