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Multiple shear banding in a computational amorphous alloy model

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Abstract

The strain localized phenomenon, so called shear bands (SBs), in an amorphous alloy have received a lot of attention in recent years. In this study, we microscopically investigated the nature and dynamics of multiple SBs using molecular dynamics model. In the SB region, intense shear-induced structural change occurred, typified by the annihilation of pentagonal short-range order, and significant localized heating accompanied with the SB propagation was observed. Moreover, a large number of fine SBs operated simultaneously at a high strain rate, whereas, only a few SBs appeared and propagated abruptly at a low strain rate. These results were discussed with respect to brittle/ductile deformation of bulk metallic glasses.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Graduate School of Engineering, Osaka University, Yamadaoka, Suita, Osaka, 565-0871, Japan

    M. Wakeda & Y. Shibutani

  2. Center of Atomic and Molecular Technologies, Graduate School of Engineering, Osaka University, Yamadaoka, Suita, Osaka, 565-0871, Japan

    Y. Shibutani

  3. Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University, Machikaneyama, Toyonaka, Osaka, 560-8531, Japan

    S. Ogata

  4. POSCO, Technical Research Laboratories, Pohang, Korea

    J. Park

Authors
  1. M. Wakeda
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  2. Y. Shibutani
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  3. S. Ogata
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  4. J. Park
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Corresponding author

Correspondence to Y. Shibutani.

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PACS

31.15.xv; 62.20.F-; 81.05.Kf

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Wakeda, M., Shibutani, Y., Ogata, S. et al. Multiple shear banding in a computational amorphous alloy model. Appl. Phys. A 91, 281–285 (2008). https://doi.org/10.1007/s00339-008-4395-4

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  • DOI: https://doi.org/10.1007/s00339-008-4395-4

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