troscopy, hysteretic phenomena were found in the curves of temperature scanning of the number of
quanta in the range of the paramagnetic–antiferromagnetic phase transition. The width of the hysteresis loop depends on
alloying and additional thermomechanical treatment. Mössbauer spectroscopy, X-ray diffraction, and tensile
tests reveal time instability of the properties of these steels. Isothermal annealing in the antiferromagnetic state
changes the shape of the line of resonance absorption of
quanta, decreases the integrated intensity of the X
ray diffraction peak, and increases yield strength. These effects are suggested to be due to magnetic nonuniformities
arising in the antiferromagnetic state because of the development of a short-range order in the austenitic solid
solution and the relaxation of the related elastic stresses.