Recent Developments in Modeling Microstructural Evolution during Recrystallization

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  • Suwa Yoshihiro
    Sheet Product Lab., Steel Research Laboratories, Technical Development Bureau, Nippon Steel Corporation

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  • サブグレイン成長モデルを中心とした最近の再結晶挙動予測モデルの発展について
  • サブグレイン セイチョウ モデル オ チュウシン ト シタ サイキン ノ サイケッショウ キョドウ ヨソク モデル ノ ハッテン ニ ツイテ

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Abstract

In this study, recent developments regarding the modeling of microstructural evolution during recrystallization are reviewed, and this paper highlights a unified theory for continuous and discontinuous annealing phenomena by means of the subgrain growth mechanism. In Sec. 3.2, the mean field analysis based on the unified theory is reviewed. In the analysis, the possibility of abnormal subgrain and/or grain growth based on non-uniform grain boundary mobility and energy has been clearly shown. With the developments in the unified subgrain growth theory, a number of Monte Carlo, vertex, and phase-field simulations have been performed, in order to investigate the microstructural evolution during recrystallization by considering the local alignment of the subgrain structure. Then, in Sec. 3.3, the numerical simulation results based on the unified theory are outlined. Finally, in Chap. 4, the numerical simulation results of static recrystallization in two-dimensional polycrystalline structures by coupling the unified sub-grain growth theory with the phase-field methodology are reviewed. In particular, the effects of the microstructural inhomogeneities formed during the deformation state on the recrystallization kinetics are discussed.

Journal

  • Tetsu-to-Hagane

    Tetsu-to-Hagane 97 (4), 173-186, 2011

    The Iron and Steel Institute of Japan

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