Dynamic Growth Mechanism of Crystal Faces of Surface Martensite with Habit Planes in Proximity to {112}

Abstract

The second formation stage of a surface martensite (SM) crystal is associated with a layer-by-layer extension of its faces. A dynamic pattern of every layer formation is similar to a rapid crystal growth in the first stage. The role of dislocation nucleation centers belongs to the dislocations framing the crystal-face surfaces. By the example of the (10-1) face it is shown that the proposed dynamic mechanism is compatible with the observed polar growth of the SM crystal trace on the (100) surface of the sample and the range of its visually observed growth.