Some specific features of high-temperature deformation of materials

Experimental results for high-temperature deformation of an iron-based structural material in the temperature ranges including the points of the $\mathrm{Fe}_\alpha\to\mathrm{Fe}_\beta\to\mathrm{Fe}_\gamma$ transition are given. It is shown that the strain-strength properties of the material change nonmonotonically on the interval $700^\circ$C $<T<1000^\circ$C and that the internal phase-structural changes exert an effect on the thermal effects. Approximating dependences that permit one to describe deformation processes in the indicated temperature ranges upon uniaxial loading are proposed.