A Monte Carlo simulation of solidification structures of binary alloys

A Monte Carlo simulation of solidification structures from a binary alloy melt under isothermal conditions is presented. The model considers simultaneous diffusion of all atoms in the liquid, atom attachment kinetics at the solid–liquid interface depending on the local number and nature of bonds formed with the solid and a surface rearrangement process that mimics the effect of capillary. The influence of each of these parameters on the morphology of the solidification structure is identified. Morphological development of dendritic and massive structures under the influence of solvent supersaturation and the strength of the like and unlike bonds in the solid are investigated in detail.