To understand the precipitation behavior and solidification process of micro-alloyed steel, abundant thermodynamic data of pure substances were incorporated in the coupled thermodynamic model of inclusions precipitation and solutes micro-segregation during the solidification of heat-resistant steel containing cerium. The liquid inclusions Ce2xAl2ySi1−x−yOz where 0 < x < 1, 0 < y < 1−x and z = 1−x−y and their generation Gibbs free energy were first introduced to the inclusions reactions according to the Al2O3-SiO2-Ce2O3 phase diagram. Then plant trials, lab experiments and published work in the literature were taken account to valid the established model. Also, the difference of calculated results between FactSage and this model were argued. Finally, the liquid inclusions were found in the samples from experiments in the tube furnace based on the calculations by this model.
Part of the book: Solidification