Mechanisms of relaxation of internal elastic stress arising during the reverse α → γ transformation upon slow heating of Fe–32 at % Ni alloy

The evolution of structural-phase states during the α → γ transformation upon slow heating of metastable Fe–32 at % Ni alloy has been studied. Experimental evidences in favor of the mechanism of dynamic γ → α → γ transformations as plastic relaxation of internal elastic stress, providing lattice reorientation and leading to the formation of a fine-grained structure, are found.