TY - JOUR

T1 - Computer simulation of phase decomposition in the regular solid solution based upon the non-linear diffusion equation

AU - Takeuchi, Akira

AU - Koyama, Toshiyuki

AU - Kozakai, Takao

AU - Miyazaki, Toru

N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.

PY - 1990

Y1 - 1990

N2 - A new Fourier expression of the Cahn-Hilliard's flux equation is proposed, where the regular solution approximation is adopted as the chemical free energy of solid solution and the mobility is defined as a function of solute composition. The results of the computer simulation of phase decomposition, derived on the basis of the new method, are in accord with the prediction from the phase diagram which is theoretically given by the free energy of the regular solution approximation. This calculation method is applicable to the actual alloy systems, because the phase diagrams have usually been evaluated, based on the regular solution or the modified regular solution model.

AB - A new Fourier expression of the Cahn-Hilliard's flux equation is proposed, where the regular solution approximation is adopted as the chemical free energy of solid solution and the mobility is defined as a function of solute composition. The results of the computer simulation of phase decomposition, derived on the basis of the new method, are in accord with the prediction from the phase diagram which is theoretically given by the free energy of the regular solution approximation. This calculation method is applicable to the actual alloy systems, because the phase diagrams have usually been evaluated, based on the regular solution or the modified regular solution model.

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U2 - 10.2320/jinstmet1952.54.11_1177

DO - 10.2320/jinstmet1952.54.11_1177

M3 - Article

AN - SCOPUS:0025510503

VL - 54

SP - 1177

EP - 1182

JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals

JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals

SN - 0021-4876

IS - 11

ER -