발간논문

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Vol.39, No.2, 193 ~ 199, 2001
Title
An Analytical Model of Microsegregation in Alloy Solidification
김민석Min Suk Kim,신윤호Yun Ho Shin,오경식Kyung Shik Oh,홍준표Chun Pyo Hong
Abstract
Two main factors of microsegregation in secondary dendrite arms during solidification have been known as the back diffusion of solute atoms in the solid domain and the coarsening of dendrites during and after solidification. The effects of the back diffusion and the coarsening have not been considered simultaneously in most previous analytical solutions reported in the literature. In the present study, an analytical model, where both the back diffusion and the coarsening effects are included, has been developed to predict microsegregation in solidification of alloy. The present model was successfully applied to the prediction of eutectic fractions in directional solidification of an Al-4.9 wt%Cu alloy and concentration profiles of Mn in continuous casting of steels.
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