| Abstract Scope |
To accurately predict the spatial evolution of the inclusion composition within the bloom, it is essential to couple considerations of fluid flow, heat transfer and solidification, the thermodynamic transformation of inclusions, diffusion kinetics, and the segregation of key elements. The study employed an established multi-physics coupled model to systematically investigate effects of total aluminum and total magnesium content in the molten steel, as well as inclusion diameters, on inclusion composition. Simulation results revealed that as T.Al content increased from 20 ppm to 80 ppm, the MgO content in inclusions decreased while the Al2O3 content correspondingly increased. When T.Mg content rose from 1 ppm to 5 ppm, MgO content increased, whereas Al2O3 content decreased and exhibited enhanced fluctuations through the thickness direction. Furthermore, at the width centerline of the strand, an increase in inclusion diameter led to higher contents of CaO, MgO, Al2O3, and SiO2, but a decrease in CaS content. |