Morphological instability of a solidification front
= Morphological instability of a solidification front
A morphological instability amplifies shape perturbations of a <solidification> interface. Protrusions may receive a larger diffusive supply or encounter larger undercooling, while <curvature-induced melting-temperature depression> suppresses fine corrugations. Solute rejection can produce <constitutional supercooling>, destabilizing a planar front and leading to cells or <crystal dendrites>.