Single shear-band plasticity in a bulk metallic glass at cryogenic temperatures

R. Maaß, D. Klaumünzer, E. I. Preiß, P. M. Derlet, J. F. Löffler

Research output: Contribution to journalArticlepeer-review

Abstract

At cryogenic temperatures bulk metallic glasses can sustain higher plastic strains than at room temperature. This is generally believed to result from an intrinsic shear-band nucleation rate that increases with decreasing temperature. Here we report on inhomogeneous flow operating via a single shear band even at cryogenic temperatures, challenging the presupposition of increased shear-band activity. The results provide a new interpretation of non-serrated flow and explain, via a simple viscosity law, the correspondingly observed strength increase with decreasing temperature.

Original languageEnglish (US)
Pages (from-to)231-234
Number of pages4
JournalScripta Materialia
Volume66
Issue number5
DOIs
StatePublished - Mar 2012
Externally publishedYes

Keywords

  • Low temperature
  • Metallic glass
  • Plasticity
  • Shear band

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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