Dynamic Theory of - Martensitic Transformation in Iron-Based Alloys : Solving the problem of the formation of twinned martensite crystals

A consideration has been given to dynamic models of formation of martensite plates with a fine structure of transformation twins, which are compatible with the supersonic growth rate of martensite crystals. Along with relatively long quasi-longitudinal waves, which determine the orientation of the habit plane, the control wave process includes relatively short longitudinal waves, which act in synchronism and control the growth of the main component of a regular twin structure. Preference is given to a model containing, at the initial moment of time, the only active dynamic cell capable of periodic reproduction in the interphase region at the stage of the martensite crystal growth. The calculated macroscopic morphological attributes, which were deduced from dynamic considerations, have been compared with the experimental data and crystallogeometrical calculation. Discussion of results and conclusions in a final part of the monography represent the independent interest. For scientific employees and experts in the field of metallography and physics of metals and alloys, as well as teachers, post-graduate students and the students who are specializing in materials technology.