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Flash Joule heating for ductilization of metallic glasses

Author

Listed:
  • I. V. Okulov

    (IFW Dresden
    TU Dresden, Institut für Werkstoffwissenschaft)

  • I. V. Soldatov

    (IFW Dresden
    Institute of Natural Sciences, Ural Federal University)

  • M. F. Sarmanova

    (Leibniz-Institut für Oberflächenmodifizierung)

  • I. Kaban

    (IFW Dresden
    TU Dresden, Institut für Werkstoffwissenschaft)

  • T. Gemming

    (IFW Dresden)

  • K. Edström

    (Uppsala University)

  • J. Eckert

    (IFW Dresden
    TU Dresden, Institut für Werkstoffwissenschaft)

Abstract

Metallic glasses (MGs) inherit their amorphous structure from the liquid state, which predetermines their ability to withstand high loads approaching the theoretical limit. However, the absence of slip systems makes them very sensitive to the type of loading and extremely brittle in tension. The latter can be improved by precipitation of ductile crystals, which suppress a catastrophic propagation of shear bands in a glassy matrix. Here we report a novel approach to obtain MG-matrix composites with tensile ductility by flash Joule heating applied to Cu47.5Zr47.5Al5 (at.%) metallic glass. This homogeneous, volumetric and controllable rapid heat treatment allows achieving uniformly distributed metastable B2 CuZr crystals in the glassy matrix. It results in a significant tensile strain of 6.8±0.5%. Moreover, optimized adjustment of the heat-treatment conditions enables tuning of microstructure to achieve desired mechanical properties.

Suggested Citation

  • I. V. Okulov & I. V. Soldatov & M. F. Sarmanova & I. Kaban & T. Gemming & K. Edström & J. Eckert, 2015. "Flash Joule heating for ductilization of metallic glasses," Nature Communications, Nature, vol. 6(1), pages 1-6, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms8932
    DOI: 10.1038/ncomms8932
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    Cited by:

    1. Li Zhan & Zonghu Han & Qi Shao & Michael L. Etheridge & Thomas Hays & John C. Bischof, 2022. "Rapid joule heating improves vitrification based cryopreservation," Nature Communications, Nature, vol. 13(1), pages 1-15, December.

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