Dynamic model of the formation of twinned martensite crystals: II. Pretransition states and relationships between the volumes of the twin components

Dynamic models of the pretransition state of austenite that are compatible with the supersonic formation of internally twinned martensite crystals due to the concerted action of short-wavelength and long-wavelength displacements have been considered. The preference has been given to the model of a single starting dynamic cell capable of being periodically replicated in the region of the front of a control wave process. For the level of threshold deformations, an algorithm of determining fractions of the main and additional (twin) components has been put forward. © 2010 Pleiades Publishing, Ltd