Phase Transformations Induced by Severe Plastic Deformation

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  • Mazilkin Andrey
    Institute of Solid State Physics, Russian Academy of Sciences Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology
  • Straumal Boris
    Institute of Solid State Physics, Russian Academy of Sciences Chernogolovka Scientific Center of Russian Academy of Sciences Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology National University of Science and Technology (MISIS)
  • Kilmametov Askar
    Chernogolovka Scientific Center of Russian Academy of Sciences Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology
  • Straumal Petr
    National University of Science and Technology (MISIS)
  • Baretzky Brigitte
    Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology

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Abstract

<p>Severe plastic deformation (SPD) can induce various phase transformations. After a certain strain, the dynamic equilibrium establishes between defects production by an external force and their relaxation (annihilation). The grain size, hardness, phase composition etc. in this steady-state does not depend on the initial state of a material and is, therefore, equifinal. In this review we discuss the competition between precipitation and dissolution of precipitates, amorphization and (nano)crystallization, SPD-induced accelerated mass-transfer, allotropic and martensitic transitions and formation of grain boundary phases.</p>

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 60 (8), 1489-1499, 2019-08-01

    The Japan Institute of Metals and Materials

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