Application of Solidification Theory with Small-supercooling to Morphology of Dendritic Inclusions in Steel

Abstract

Tip shape of dendritic Type II manganese-sulfide is analysed based on the supercooling solidification theory which Lipton et al. proposed. The theory is derived from the marginal stability of dendrite tip, and needs several physical parameters and constants which are not necessarily known accurately for manganese-sulfide/enriched melt interface. The authors' approach took rough assessment to the figures of physical properties, but the results of calculation give a confidence to a theoretical method of evaluating tip radius of the inclusions.