[1] Numerical solution and comparison to experiment of solute drag models for binary alloy solidification with a planar phase interface

Shu Li et al

A generalized solute drag model for binary alloy solidification with a planar phase interface was proposed as an extension of Hillert-Sundman model [M. Hillert, B. Sundman, Acta Metall. 24 (1976) 731]. Using a new thermodynamic parameter set of Si-As system, the present model can, at the expense of the introduction of three new adjustable parameters, fit the available experimental data of Si-9at.%As alloy. In addition, non-solute-drag models with the new set of thermodynamic parameters can not reproduce the experimental data.

[2] Model for coarsening of intergranular precipitates in multicomponent systems

J Svoboda and F D Fischer

Based on the thermodynamic extremal principle a model for coarsening of intergranular precipitates in multicomponent systems is developed. The model provides the evolution equations for individual precipitates within the mean-field approach and generalizes the recent models applicable only to a special binary system. The simulations based on the model are performed for precipitates with the starting LSW size distribution which changes after a certain time to a quasistationary one with a t{1/4} growth law being in agreement with recent models.