Effects of local nonequilibrium in rapid eutectic solidification—Part 2: Analysis of effects and comparison to experiment

The developed model of diffusion‐limited and diffusionless solidification a eutectic alloy describes the relation “undercooling (Δ T )‐velocity ( V )‐interlamellar spacing (λ)” for two cases. Namely, when front velocity is smaller than solute diffusion speed in bulk liquid D , < predicts regime similarly to known classical models. If higher speed, > mainly controlled by kinetic thermal undercoolings. New expressions distribution coefficient slope liquidus lines are supplied. influence parameters on growth kinetics during discussed. Model predictions compared with experimental data an Fe–B composition. Computational results show that agrees well especially low high undercoolings, extending undercooling range can be covered sharp interface modeling.