The behavior of autowaves of localized plastic flow in the Fe-Ni-Cr alloy at temperatures of 143≤ T≤ 420 K is considered. The temperature dependence of the propagation velocity of the autowave is studied. It was found that for the region of low temperatures the inverse proportionality of the autowave velocity to the strain hardening coefficient and the quadratic dispersion law are fulfilled. The temperature independence of the elastoplastic deformation invariant is established.

The behavior of the localized plastic flow autowaves characteristics is considered in the Fe-Ni-Cr alloy for the temperature range from 143 K to 420 K (420 K is the Debye temperature). It is shown that the multiplication of the autowave length and the velocity of its propagation, in the specified interval, decreases with temperature. At the same time, the ratio of this value to the viscosity of the phonon gas in the metal in the investigated temperature range remains practically constant. This indicates that the elastic-plastic invariant of deformation is independent of temperature.