Shock-induced time-dependent strength behavior in amorphous alloys from a microscopic view

Kaiguo Chen, Yuying Yu, Zugen Zhang, San-Qiang Shi

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)

Abstract

Shock-induced strength behavior and the corresponding microstructural evolution have remained unclear for decades. We propose a viscous-solid model from a microscopic view implied by simulations with non-equilibrium molecular dynamics. The model describes the shocked microstructure very well and shows time-dependent strength behavior upon shock-induced yielding in amorphous alloys. For the first time, we find that the Kohlrausch-Williams-Watts equation [φ(t) = e-(t/)β] is quantitatively applicable in the modelling of time-dependent strength behavior at the non-equilibrium shockwave front. The parameters in the Kohlrausch-Williams-Watts equation are found to agree well with several experimental facts.
Original languageEnglish
Pages (from-to)62-66
Number of pages5
JournalScripta Materialia
Volume120
DOIs
Publication statusPublished - 15 Jul 2016

Keywords

  • Amorphous alloy
  • Microstructure evolution
  • Shock
  • Strength relaxation

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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