Ideal elasto-plastic behavior in torsional deformation of Zr 44Ti 11Cu 10Ni 10Be 25 bulk metallic glass

Zs Kovács, L. S. Tóth, J. Lendvai

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Large plastic strain can be attained in Zr 44Ti 11Cu 10Ni 10Be 25 bulk metallic glass below the glass transition temperature by applying the free-end torsion method. The initial part of the deformation of the metallic glass can be accurately described by a homogeneous ideal elasto-plastic model. Deviation from the ideal behavior occurs when plastic shear deformation becomes macroscopically inhomogeneous and longitudinal shear bands appear on the surface in addition to shear bands perpendicular to the torsion axis. Samples with multiple sets of shear bands fracture after substantially higher macroscopic shear deformation.

Original languageEnglish
Pages (from-to)85-89
Number of pages5
JournalJournal of Alloys and Compounds
Volume542
DOIs
Publication statusPublished - Nov 25 2012

Keywords

  • Bulk metallic glass
  • Plastic deformation
  • Shear bands
  • Torsion

ASJC Scopus subject areas

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

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