Kinetics of precipitation of non-metallic inclusions during solidificationof steel

A numerical simulation which describes precipitation of non-metallic inclus ions during steel solidification is proposed. The model includes nucleation laws in the homogeneous phase, growth controlled by diffusion of solute el ements and kinetics of interfacial reaction, as well as microsegregation. T he calculated results, i.e., the total amount, size and number of inclusion s, were compared to experimental observations obtained in the laboratory on TiN precipitation by quenching during unidirectional solidification. Sulph ur content of the steel was observed to influence the kinetics of precipita tion. (C) 1999 Elsevier Science B.V. All rights reserved.