We report on a multiscale modeling of steel solidification in a sample cooled
down homogeneously at a constant heat extraction rate. To this aim, we com-
bine (1) CalPhaD (CALculation PHAse Diagram) calculations to determine
thermodynamic properties of the alloy and the according phase-diagrams, (2)
macroscale simulations using the software SOLID to determine the temperature
profiles in the domain of interest, (3) microscale phase-field (PF) simulations to
calculate the dendrite tip parameters with high accuracy and (4) mesoscale grain
envelope model (GEM) to study the dendrite interactions at a local intermediate
scale (between micro and macro scales) in large ingots. The CalPhaD calcula-
tions allow to determine the suitable relevant pseudo-binary aproximation of an
industrial alloy, while SOLID calculations provide accurate temperature con-
figurations required in the PF simulations. With PF simulations, the effects
of one-sided [1] and two-sided [2] solute diffusion are investigated, and the tip
selection parameters are calculated accordingly. Those selection parameters are
used as inputs to perform GEM [3] simulations to investigate the mesoscale
dynamics of solidification.

References
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solidification involving diffusion in the solid. Phys. Rev. E, 79(3):031603,
2009.
[3] Youssef Souhar, Valerio F De Felice, Christoph Beckermann, Hervé
Combeau, and Miha Založnik. Three-dimensional mesoscopic modeling of
equiaxed dendritic solidification of a binary alloy. Comput. Mater. Sci.,
112:304–317, 2016.