Effects of local non-equilibrium in rapid eutectic solidification. Part
2: modeling versus experimental data
Abstract
The developed model of diffusion-limited and diffusionless
solidification of eutectic alloy describes the relation “undercooling
(ΔT)–velocity(V)–interlamellar spacing (λ)” for two cases. Namely, if
the lamellar velocity V is smaller than the solute diffusion speed in
bulk liquid VD, VVD, the solidification is mainly controlled by kinetic
and thermal undercoolings. We show an influence of model parameters on
the growth kinetics of eutectic solidification. Comparison of the model
predictions with experimental data obtained on Fe-B samples processed in
melt-glass fluxing is given.