UDK 621.762:539.2 Doi: 10.31772/2587-6066-2019-20-2-268-276
THE PROCESS OF NANOMODIFYING CAST ALUMINUM ALLOY INGOTS FOR COMPONENTS OF AEROSPACE VEHICLES
Krushenko G. G., Nazarov V. P., Reshetnikova S. N., Dvirnyi G. V.
Institute of computational modeling SB RAS, 44, Akademgorodok, Krasnoyarsk, 660036, Russian Federation; Reshetnev Siberian State University of Science and Technology, 31, Krasnoyarsky Rabochy Av., Krasnoyarsk, 660037, Russian Federation
Currently, increasing attention has been paid to such a class of materials as nanopowders (NP) of chemical compounds, which are ultra-thin formations of not more than 100 nm in size. Such attitude to these materials is explained by the fact that they have unique physical, chemical and mechanical properties significantly different from the properties of materials of the same chemical composition in a massive state, and these properties can be transferred to some extent from them or with their participation to the products. The existing methods of introducing NP into metal melts could not be used due to their special properties in comparison with coarse powders, and therefore a new method of their introduction into the melt was developed, excluding direct contact of NP particles with oxygen and unhindered penetration of particles into the melt through the oxide layer. The essence of the method was as follows. In the aluminum container filled up with aluminum particles or deformable aluminum alloys D1 or D16 and various NP (nitrides, carbides, oxides, etc.), and this composition was pressed into the rod, with its help NP was introduced into the melt during casting of aluminum ingots and deformable aluminum alloys. The results of the study showed that this excludes the appearance of cracks in the ingots, as well as improves their technological and mechanical properties.
Keywords: aluminum alloys, ingots, nanopowders, improvement of technological and mechanical properties.
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Krushenko Genrikh Gavrilovich – Dr. Sc., Prof., Ch. Researcher, Institute of Computational Modeling SB RAS;
Professor, Reshetnev Siberian University of Science and Technology. E-mail: genry@icm.krasn.ru.

Nazarov Vladimir Pavlovich – Ph. D., Professor, Department of Aircraft Engines, Reshetnev Siberian State University
of Science and Technologies. E-mail: nazarov@mail.sibsau.ru.

Reshetnikova Svetlana Nikolaevna – Cand. Sc., Head of Methodical study of dissertation councils; Reshetnev
Siberian University of Science and Technology. E-mail: ambre2014650@yandex.ru.

Dvirnyy Guriy Valer'yevich – Cand. Sc., Associate Professor of the Department “Mechanical Engineering”;
Reshetnev Siberian University of Science and Technology. E-mail: dg1802@mail.ru.


  THE PROCESS OF NANOMODIFYING CAST ALUMINUM ALLOY INGOTS FOR COMPONENTS OF AEROSPACE VEHICLES