International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

The development of metal physics and physical materials science in the coming decades is one of the main driving forces of the new scientific and technological revolution, which will cause significant changes in many sectors of industry and energy, construction and agriculture, military equipment and everyday life. In the work using the principles of nonequilibrium thermodynamics develop new models of solid-phase transformations in iron-carbon alloys: annealing, tempering, γ→α – transformation, graphite formation, carbides transformation. Developed models of solid-phase transformations applied to the management of the structure formation of iron-carbon alloys and optimization of their thermal treatment and identifying the conditions of formation of dispersed (nano) particles of carbides in some of the investigated alloys and possibilities of their transformation.

The non-equilibrium thermodynamics analysis of the eutectoid transformation is executed into carbon steel. Onsager’s equations of motion are built for the model thermodynamics system describing eutectoid transformation. Dependences of basic kinetic pa-rameters of process are expected are speeds of height of pearlite and inter-plates distance from the size of subcooling became for the sta-tionary process of eutectoid transformation.