Molecular Dynamics Simulation on Anelasticity under Tensile and Shearing Stresses in Single Component Amorphous Metal

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  • Fujita Kazutaka
    Department of Mechanical Engineering, Ube National College of Technology
  • Ohgi Junji
    Department of Mechanical Engineering, Yamaguchi University
  • Vitek Vasek
    Department of Materials Science and Engineering, University of Pennsylvania
  • Zhang Tao
    School of Material Science and Engineering, Beijing University of Aeronautics and Astronautics
  • Inoue Akihisa
    Institute of Materials Research, Tohoku University

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In this study, the nanoscopic deformation behavior in single amorphous during loading-unloading process under tensile and shearing stresses were analyzed by the molecular dynamics method and were compared with the earlier experimental results where an anelastic behavior was not shown in tensile stress but in shearing stress. In this study a clear anelastic deformation was shown in the shearing stress. However, it didn’t occur in the tensile stress. This corresponds to the earlier experimental result. When an abrupt strain increase in the stress–strain curve was exhibited, the potential energy and atomic volume has been increased suddenly. This result indicates that the anelastic response of the amorphous metal in the shearing stress was generated by local phase transformation.

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  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 46 (12), 2875-2879, 2005

    公益社団法人 日本金属学会

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