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Critical fictive temperature for plasticity in metallic glasses

Author

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  • Golden Kumar

    (Texas Tech University, Box 41021, 7th and Boston, Lubbock, Texas 79409, USA)

  • Pascal Neibecker

    (Yale University)

  • Yan Hui Liu

    (Yale University)

  • Jan Schroers

    (Yale University)

Abstract

A long-sought goal in metallic glasses is to impart ductility without conceding their strength and elastic limit. The rational design of tough metallic glasses, however, remains challenging because of the inability of existing theories to capture the correlation between plasticity, composition and processing for a wide range of glass-forming alloys. Here we propose a phenomenological criterion based on a critical fictive temperature, Tfc, which can rationalize the effect of composition, cooling rate and annealing on room-temperature plasticity of metallic glasses. Such criterion helps in understanding the widespread mechanical behaviour of metallic glasses and reveals alloy-specific preparation conditions to circumvent brittleness.

Suggested Citation

  • Golden Kumar & Pascal Neibecker & Yan Hui Liu & Jan Schroers, 2013. "Critical fictive temperature for plasticity in metallic glasses," Nature Communications, Nature, vol. 4(1), pages 1-7, June.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms2546
    DOI: 10.1038/ncomms2546
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