702 アモルファス金属の粘性と結晶化の時間-温度-変態 (T-T-T) 曲線の分子動力学法による評価

概要

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The possibility of calculation of intermaterial structure based on uniform nucleation-growth theory suggested by Unlmann and Davies is discussed. Molecular dynamics (MD) simulations are used to estimate material properties of the model amorphous metal which is obtained by heating-quenching simulation. Finnis-Sinclair potential for Fe is assumed as interatomic potential. At first, MD simulations of uni-axial tension for the model amorphous are performed to estimate rheological property. After that T-T-T curves are calculated. The crystallization times obtained by the T-T-T curves and MD simulation of deformation induced nanocrystallization process which is reported previously are compared each other. Both of them give almost same crystallization time. To get more accurate prospects, it is important to estimate the viscosity strictly.
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