Evaluation of Dendritic Growth Theories with Experimental Data

Abstract

A comparison of dendritic growth kinetics of various materials with the transport theories suggests that dendritic growth kinetics of materials might be dependent on microstructure of crystals. Also advective flow created during solidification seems to be taken into account when the growth kinetics of dendrites is determined, which has not been considered before. A plot of stability parameters, σ ^*, of different anisotropic materials as a function of anisotropy of interfacial energy, ε _m, indicates that relationship σ ^*-- ε _m^7/4 does not hold, which is the main prediction of microscopic solvability theory. This fact suggests that stability parameter seems to be determined not only by anisotropy of given material but also other factors which is not yet found.