1117 FePdの規則-不規則変態に及ぼす磁気エネルギー効果の解析(OS11.フェーズフィールド法とその応用(5),オーガナイズドセッション)

概要

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Magnetic energy dependence of order-disorder transition in FePd has been investigated by multi phase field model. In this study, interface energy and magnetic crystalline anisotropy energy were taken into account in an approximate manner. A disorder state at 50 [K] below transition temperature was set as an initial state. Volume fraction of variants was calculated under no magnetic field or under magnetic field of 5 [T] until ordering is completed. In this magnetic field, magnetic anisotropy energy is about 0.028% of the latent heat of order-disorder transition. The results of calculations suggested that magnetic crystalline anisotropy energy is effective for grain alignment, increasing volume fraction of the variant with magnetically favorable orientation under magnetic field even during order-disorder transition only, followed by further increase driven by inetrface energy.
一般社団法人日本機械学会の論文
2009-10-10