Pure shear stress reversal on a Cu-based bulk metallic glass reveals a Bauschinger-type effect

Yong Hao Sun, D. V. Louzguine-Luzgin, S. Ketov, A. L. Greer

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

We have developed a torsion machine that can apply pure shear stress to small-diameter rod samples. We report preliminary results on Cu-based metallic glass samples held at constant torque in the elastic range. The inelastic angle of twist increases approximately linearly with the logarithm of time, interpreted as anelastic deformation. Reversal of torque reveals an effect analogous to the Bauschinger effect in polycrystalline metals. The relative deformation rate is increased by a factor of 4.5 on first reversal, an effect discussed in terms of the operation of shear transformation zones and related to structural change in the metallic glass.

Original languageEnglish
Pages (from-to)S75-S78
JournalJournal of Alloys and Compounds
Volume615
Issue numberS1
DOIs
Publication statusPublished - 2014 Dec 5

Keywords

  • Anelasticity
  • Bauschinger effect
  • Mechanical properties
  • Metallic glasses
  • Torsion

ASJC Scopus subject areas

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

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