Effect of Heat Release on the Motion of Phase Boundaries

Abstract

The influence of heat generation accompanying the release of the latent energy during the motion of a phase boundary on its velocity has been considered. Both the temperature distribution around a stationarily moving phase boundary and its velocity have been analyzed self-consistently for the case of thermally activated phase boundary motion. It has been shown that at least one stationary regime of the phase boundary motion exists for any values of parameters characterizing the heat production and the heat removal rate. The conditions for the existence of two stationary regimes have been formulated and a possibility of transitions between the two regimes leading to jump-like velocity changes (jerky motion of phase boundaries) has been discussed.