Deformation twinning and plastic recovery in Cu/Ag nanolayers under uniaxial tensile straining

Ruizhi Li, Huck Beng Chew

Research output: Contribution to journalArticlepeer-review

Abstract

Molecular dynamics simulations of nanoscale multilayered Cu/Ag metals have been conducted under uniaxial tensile straining to elucidate the out-of-plane deformation behaviour relevant to tensile spallation experiments. In nanolayers with pristine architectures, plastic dissipation prior to crack nucleation is suppressed owing to the high hydrostatic tensile stress state. The presence of sources for micro-twinning partials, such as micro-cracks or columnar grain boundaries, result in abundant deformation twin lamellae across multiple Cu/Ag interlayers. Plastic recovery is observed during unloading of the nanolayers.

Original languageEnglish (US)
Pages (from-to)260-268
Number of pages9
JournalPhilosophical Magazine Letters
Volume94
Issue number5
DOIs
StatePublished - May 4 2014

Keywords

  • deformation twins
  • molecular dynamics simulations
  • nanolayered metals
  • plastic recovery

ASJC Scopus subject areas

  • Condensed Matter Physics

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