Khabarovsk Federal Research Center, Far Eastern Branch of the Russian Academy of Sciences, Institute of Mechanical Engineering and Metallurgy, Komsomolsk-on-Amur, Russia

O. N. Komarov, Cand. Eng., Associate Prof., Leading Researcher, e-mail: olegnikolaevitsch@rambler.ru
G. M. Sevastyanov, Cand. Phys.-Math., Leading Researcher, e-mail: akela.86@mail.ru
A. V. Popov, Junior Researcher, e-mail: popov.av@live.com

Amurmetall-Lityo, Komsomolsk-on-Amur, Russia.

V. V. Tarasov, Director, e-mail: TarasovVV@amurstal.com
S. A. Gakh, Head of Production Preparation Dept., e-mail: gakhsa@amurstal.com
A. E. Serdyukov, Deputy Director for Production, e-mail: serdyukovae@amurstal.com

The demand for industrial enterprises' products is directly determined by their competitiveness, which is a complex characteristic based on low production costs, high reliability and durability, multi-functionality and versatility, easy accessibility of the products, etc. Consumer interest in the products ensures an increase in the competitive and economic potential of the enterprises, which is supported by improving the above-mentioned characteristics of the products. In particular, various methods are used in foundry production to improve the quality characteristics of cast billets. These methods allow for the improvement of the physical, mechanical, technological, and operational properties of the resulting products, one of which is the introduction of refining and deoxidizing mixtures into the alloys during the melting process. This method allows for the production of alloys with high chemical purity, which determines the grain morphology and the presence of minor inclusions that affect the performance characteristics under various operating conditions, including the lowering of the visco-elastic transition temperature, which leads to an increase in low-temperature impact strength. This allows for the full realization of the potential of known alloys and their use as versatile materials that can replace more expensive and scarce materials in specific applications. In this regard, Amurmetall-Litye LLC has carried out work  toimprove the characteristics of Gadfield steel by using deoxidizing (DDA) mixtures at certain stages of smelting, the result of which improvement in the conditions for the implementation of technological operations for the production of alloys, as well as an increase in their characteristics, in particular in particular, a change in the morphology of the structural components, a decrease in the concentration of inclusions that determine the increase in the toughness of the alloy at temperature -60 °C to 77 % with an increase in strength characteristics and hardness in the required ranges according to regulatory documentation.
This work was carried out within the framework of the State Assignment of the Khabarovsk Federal Research Center, Far Eastern Branch of the Russian Academy of Sciences.

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