<紀要論文>
時間依存型ギンツブルグ・ランダウモデルによる規則‐不規則相転移過程の計算機シュミレーション

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概要 The phase transformation process has been investigated by using the time dependent Ginzburg-Landau (TDGL) model with conservative and non-conservative variables. The Ginzburg-Landau type free energy c...ontains a term of \xi3 in order to describe a first kind of transition, where \xi is the order-parameter. The kinetic equations were formulated with the composition and the order-parameter which are the conservative and the non-conservative variables, respectively. The changes in microstructure were simulated by using the, kinetic equations, and they were found to be in good coincidence with those in Cu3Pt observed with a transmissiona electron microscope. The simulation revealed that the degree of order averaged over the system changes with the annealing time in a different way depending on the annealing temperature. The changes in the degree of order can be divided into several processes which are strongly related to the behaviors of APBs.続きを見る

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登録日 2010.06.12
更新日 2020.11.17

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