The High Temperature Deformation Mechanism in Solution Hardened Alloys

DOI HANDLE Open Access
  • Nakashima Hideharu
    Department of Materials Science and Technology, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
  • Yoshinaga Hideo
    Department of Materials Science and Technology, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University

Bibliographic Information

Other Title
  • 固溶硬化合金の高温変形機構

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Abstract

In general, the flow stress of metals and alloys is expressed as the sum of an internal stress and an effective stress. Here, the internal stress is athermal stress, which is based on long range interaction between dislocations or dislocations and dispersed particles, and does not depend on temperature and strain rate. On the other hand, the effective stress is thermal stress, which is based on short range interaction between dislocations or dislocation and solute atoms, and strongly depends on temperature and strain rate. In this paper, it is reviewed that the high temperature deformation of solution hardened alloy is controlled by the solute atmosphere dragging mechanism of dislocations, and that the effective and internal stresses respectively equal to the solute atmosphere dragging stress for dislocation motion and the athermal stress derived from the attractive junctions formed by dislocation interaction.

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Details 詳細情報について

  • CRID
    1390009224836817792
  • NII Article ID
    120002168761
  • NII Book ID
    AN00055101
  • DOI
    10.15017/17208
  • HANDLE
    2324/17208
  • Text Lang
    ja
  • Data Source
    • JaLC
    • IRDB
    • CiNii Articles
  • Abstract License Flag
    Allowed

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