Theoretical Investigation of Coarsening Process of L1<SUB>0</SUB>-Ordered Domain Based on Phase Field Method and Cluster Variation Method

  • Ohno Munekazu
    Division of Material Science and Engineering, Graduate School of Engineering, Hokkaido University
  • Mohri Tetsuo
    Division of Material Science and Engineering, Graduate School of Engineering, Hokkaido University

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Other Title
  • Theoretical Investigation of Coarsening Process of L10-Ordered Domain Based on Phase Field Method and Cluster Variation Method

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Abstract

A hybridized calculation of Phase Field Method and Cluster Variation Method is applied to investigate the relaxation process of Long-Range-Order parameter (LRO) originating from competitive growth of ordered domains. It is shown that the coarsening process proceeds by both the curvature-driven growth and coalescence among in-phase ordered domains. In the early annealing period, an average radius of ordered domains increases proportional to t1⁄2 as predicted by the curvature-driven growth. In the later period, however, a deviation from this relation is manifested by coalescence process. The LRO relaxation kinetics largely depends on the frequency of coalescence event.

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 43 (9), 2189-2192, 2002

    The Japan Institute of Metals and Materials

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