Structural-and-Phase Transformations in Fe-4.10 and 7.25 at.% Mn Alloys under Intensity External Actions

The effect of high-pressure torsion (HPT) (P = 8 GPa, e 5.9) and irradiation with continuous beams Ar+ ions energy E 15 keV on the atomic structure phase composition initially quenched iron alloys 4.10 7.25 at.% Mn was studied by method Mössbauer spectroscopy. supersaturated α-solid solution Fe-7.25 Mn, in contrast to stable Fe-4.10 which passes into a highly nonequilibrium metastable state as result HPT deformation, is transformed under influence ion at an abnormally low temperature 280 °C two-phase α + γ-state enriched γ-phase (austenite) (38.4 Mn) depleted 5.76 Mn. rapid processes formation concentration close extrapolation estimate using equilibrium diagram are explained cascade radiation shaking material post-cascade powerful elastic shock waves. Cascade plays role opens up possibility achieving states absence thermally activated record temperatures.