Nosov Magnitogorsk State Technical University (Magnitogorsk, Russia):

K. N. Vdovin, Dr. Eng., Prof., Head of the Chair of Metallurgy and Casting Processes, kn.vdovin@gmail.com
N. A. Feoktistov, Cand. Eng., Acting Associate Prof., Chair of Metallurgy and Casting Processes,
D. A. Gorlenko, Cand. Eng., Assistant of Dept. of Foundry and Materials, gorldima@yandex.ru
O. A. Nikitenko, Cand. Eng., Senior Lecturer, Chair of Material Science and Heat Treatment

The paper presents the results of investigation of micro structural parameters of cast and quenched high-manganese steel depending on the amount of introduced titanium oxycarbonitride as well as on cast steel cooling rate. The main part of the work contains the experimental data in the effect of modification on average size and microhardness of austenite grain, on amount, average size and density of distribution of the excessive phase as well as its qualitative chemical composition. Generalization of the obtained experimental data allowed to reveal regularities of structure forming for high-manganese steel modified by titanium oxycarbonitride. The final part of the paper includes formulated conclusions as well as recommendations on the most rational amount of introducing modifier.

The study was financially supported by the grant of Russian Scientific Fund (the project No. 15-19-10020).

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