The role of dislocations, and the dynamic mechanisms which controlled structural reconstruction during the nucleation and growth of new phases in the martensitic transformations of metallic systems, were considered. It was established that, near to some straight dislocations having lines and Burgers vectors which were typical of the original phase, there were areas where an elastically deformed state was characterized by a number of characteristics which corresponded unambiguously to the well-defined morphological attributes of the martensite crystal. The importance of these volumes to martensite nucleation was due to the character of the strains; which reduced the magnitude of the interphase energy barrier. An elastic model was proposed for the dislocation-based nucleation of martensitic crystals. This permitted the selection of the dislocations which were most promising with regard to nucleation, and the identification of those martensitic crystals having the various morphological attributes that corresponded to a specific dislocation.

Conception of New Phase Dislocation-Based Nucleation at Reconstructive Martensitic Transformations. V.V.Letuchev, V.P.Vereshchagin, I.V.Alexina, M.P.Kashchenko: Journal de Physique IV, 1995, 5[C8], 151-6