Thermo-mechanical processing of a Zr62.5Cu22.5Fe5Al10 glassy alloy as a way to obtain tensile ductility

A. I. Bazlov, A. G. Igrevskaya, N. Yu Tabachkova, C. Chen, V. V. Cheverikin, A. V. Pozdniakov, J. Jiang, D. V. Louzguine-Luzgin

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5 Citations (Scopus)

Abstract

Low plasticity is a key drawback limiting the widespread use of bulk metallic glasses. Although heat treatment and thermo-mechanical processing techniques are not applied to metallic glasses (only to supercooled liquids), since heating leads to embrittlement either due to structural relaxation or thermal crystallization, in this paper, we demonstrate a strong positive effect of cold rolling and subsequent thermal annealing below the glass-transition temperature on room-temperature mechanical properties of a Zr62·5Cu22·5Fe5Al10 glassy alloy. As a result we observed mechanical softening and appearance of tensile ductility (up to 1.5%) in bulk samples and an increase in hardness by up to 25% in ribbon samples yet retaining good bending plasticity. We believe that the proposed method can be applied to a number of metallic glasses.

Original languageEnglish
Article number157138
JournalJournal of Alloys and Compounds
Volume853
DOIs
Publication statusPublished - 2021 Feb 5

Keywords

  • Metallic glasses
  • Microhardness
  • Microstructure
  • Phase separation
  • Tensile ductility
  • Thermo-mechanical treatment

ASJC Scopus subject areas

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

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