Hardening kinetics of the stress-strain state of a cylinder made of steel 45

The stress-strain state of a material in hardening is calculated for a solid cylinder as an example on the basis of the theory of thermoplasticity with the use of the associated flow law and the Mises criterion. The microscopic inhomogeneity of the medium caused by structural and phase transformations is represented schematically by a structural model in correspondence with which each phase is considered as a continuous medium with boundaries moving in the course of the phase transformation or under the action of a force.