Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia

M. A. Polyakova, Dr. Eng., Associate Prof., Prof., Dept. of Materials Processing Technologies, e-mail: m.polyakova@magtu.ru
E. M. Golubchik, Dr. Eng., Associate Prof., Prof., Dept. of Materials Processing Technologies, e-mail: e.golubchik@magtu.ru
E. V. Lopatina, Postgraduate Student, Dept. of Materials Processing Technologies, e-mail: lopatina.yekaterina2016@yandex.ru
N. A. Trubnikov, Master’s Student, Dept. of Materials Processing Technologies, e-mail: nik.trubnikov.2001@mail.ru

The contribution of G. S. Gun to solve scientific and practical problems related to the processes of production of metal products for various purposes is noted. A distinctive feature of his activities was the creation of scientific groups, which included famous scientists and young researchers. This guaranteed the successful achievement of the required result. The basis of this approach to the organization of scientific activity was the long-term traditions of the department of rolling and drawing production headed by G. E. Arkulis. The article proposes to use the basic principles of the theory of joint plastic deformation of dissimilar bodies in relation to pressure treatment processes of multiphase steels. A distinctive feature of the proposed approach is that it takes into account the type and quantitative ratio of the phases that make up the steel structure. To take into account the share of a particular phase in the total volume of the material, it is proposed to use the concept of “phase filling factor”. The hot rolling process of 09G2С steel was chosen as an example. The types and quantitative ratios of phases, as well as their properties at controlled hot rolling temperatures, were obtained using JMatPro software. The calculations performed showed good convergence of the results of the obtained analytical equations with the production modes of hot rolling of this steel. The developed approach can be used to develop technological regimes for pressure treatment of multiphase steels in the absence of statistical data on the features of changes in their structural-phase state.

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