National University of Science and Technology “MISiS” (Moscow, Russia):

A. Yu. Churyumov, Cand. Eng., Associate Prof., Dept. of Non-ferrous Metallurgy, e-mail: churyumov@misis.ru
A. V. Pozdnyakov, Cand. Eng., Associate Prof., Dept. of Non-ferrous Metallurgy
V. V. Cheverikin, Cand. Eng., Leading Resarcher

A. A. Bochvar High-technology Scientific Research Institute for Inorganic Materials (Moscow, Russia):
T. A. Churyumova, Researcher

Finite element simulation and experimental investigation of heat-resistant AISI 310S steel under high-temperature tensile and torsion with tension conditions was carried out using thermomechanical simulator Gleeble 3800. The tensile fracture of steel is preceded by significant plastic deformation, as evidenced by the developed fracture surface, charac terized by microdimples. The true deformation to failure, determined by the relative reduction of cross-section area in the strain localization zone, is mainly determined by the tension temperature and increases from 2.1–2.2 to 3.2–3.6 with increasing temperature from 900 to 1100 °C. It was shown that the critical values of the AISI 310S steel failure criterion during hot plastic deformation increase with decreasing of the Zener-Hollomon parameter. Verification of the constructed fracture model showed its high predictive ability and the potential possibility for application for the development of industrial technologies for plastic deformation of the AISI 310S steel using the finite element method.
This work was financially supported by the Russian Science Foundation (project No. 18-79-10153).

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