This article is cited in 5 scientific papers (total in 5 papers)
International Conference ''Mechanisms and Nonlinear Problems of Nucleation, Growth of Crystals and Thin Films'' dedicated to the memory of the outstanding theoretical physicist Professor V.V. Slezov (Proceedings) St. Petersburg, July 1-5, 2019 Metals
Degenerate structure of transformation twins and estimation of dislocation density in martensite crystals
Abstract:
In the dynamic theory of martensitic transformations, the wave mechanism of controlling martensite crystal growth is determined by the superposition of wave beams of quasi-longitudinal (or longitudinal) waves carrying the “tensile–compression” deformation in the orthogonal directions. The wave beam formation is considered to be a result of the formation of excited (vibrational) states. The existence of transformation twins is interpreted as a result of a matched propagation with respect to long-wave ($l$ waves) and short-wave ($s$ waves) shifts. The matching condition is analyzed for the $\gamma$–$\alpha$ martensitic transformation in iron-base alloys. It is shown for the first time that the transition to a degenerate twin structure with the allowance for the medium discreteness enables one to estimate the dislocation density in crystals with habit $\{557\}$, which agrees with that observed experimentally.
Citation:
M. P. Kashchenko, N. M. Kashchenko, V. G. Chashchina, “Degenerate structure of transformation twins and estimation of dislocation density in martensite crystals”, Fizika Tverdogo Tela, 61:12 (2019), 2274–2279; Phys. Solid State, 61:12 (2019), 2254–2259