Effect of the attenuation of short-wavelength displacements on the formation of transformation twins in α-martensite crystals

Abstract

In terms of the dynamic theory, one of the possible scenarios of the formation of transformation twins in crystals of α martensite of thin-plate morphology characteristic of Fe–Ni–C alloys with low temperatures of the onset of the γ–α martensitic transformation has been discussed. It has been shown that, in the case of matched velocities of the propagation of relatively short s waves and relatively long l waves, the attenuation of s waves leads to the fragmentation of the twin structure with a monotonic decrease in the fraction of the main component of the twin structure inside fragments.