Phase-field Modeling of Structural Elongation and Alignment of (α+γ) Microstructure in Fe-0.4C Alloy during Thermomagnetic Treatment

概要

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During last decade, the phase-field method has emerged across many fields in materials science as the powerful tool to simulate and predict the complex microstructure developments. In this study, the microstructure changes of γ precipitation in polycrystalline α phase during thermomagnetic treatment in Fe–0.4C alloy are modeled using the phase-field method. Using phase-field simulation, the model reasonably represents microstructure changes in Fe–0.4C system quantitatively. In particular, it is shown that the structural elongation and alignment of the (α+γ) two-phase microstructure is influenced by the anisotropic carbon diffusion induced by the magnetic energy at the initial stage of the γ phase formation. Modeling of microstructure developments with the framework of the phase-field method is shown to be a very effective strategy to predict and analyze complex microstructure formation.
社団法人日本鉄鋼協会の論文
2006-09-15