NONISOTHERMAL EUTECTIC CRYSTALLIZATION

A model for the dynamics of nonisothermal eutectic growth is examined in the limit of a spatially uniform but time dependent temperature fie ld. The simpler case of nonisothermal growth is first considered, and approximate solutions are obtained for the crystallization rate for th e growth of a single crystallite and for homogeneous nucleation. For e utectic transformation the latent heat generated during invasion of a eutectic crystal into an amorphous background is shown to increase the lamella wavelength. For homogeneous eutectic growth, the latent heat is shown to alter significantly the growth mechanisms observed under i sothermal conditions.