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1 results

  • 3 - Dislocation Substructures

  • from Part I - Fundamentals
  • Tadashi Hasebe, Kobe University, Japan
  • Book:
    Field Theory of Multiscale Plasticity
    Published online:
    14 December 2023
    Print publication:
    04 January 2024, pp 139-231

  • Summary

    Metallic materials are known to be strongly rate and history dependent, where the history includes strain, strain rate, strain path, and temperature. The history effects manifest themselves as, for example, additional hardening and softening in terms of the stress response. Since the materials inevitably experience various histories both during forming/working processes into desired shapes or structures and during operations, modeling of these history effects has been one of the most challenging and difficult problems in the field of mechanics of materials. Most of these histories are brought about by the dislocation substructures with cellular morphology evolving during plastic deformation. In other words, the information about the loading “history” is stored in the evolved/evolving dislocation cells.