Won Y-M, Thomas B G

Abstract: A simple analytical mode of microsegregation for the solidification of multicomponent steel alloys is presented. This model is based in the Clyne-Kurz model and is extended to take into account the effects of multiple components, a columnar dendrite microstructure, coarsening and the delta/gamma transformation. A new empirical equation to predict secondary dendrite arm spacing as a function of cooling rate and carbon content is presented based on experimental data measured by several different researchers. The predictions agree well with a range of measured data and the results of a complete finite-difference model.

Keywords:Analytical mode, Finite-difference model, Micro segregation, Solidification.