Научная электронная библиотека ULRICH'S Periodicals Directory

Сибирский государственный университет
науки и технологий имени академика М.Ф. Решетнева

Сибирский аэрокосмический журнал
ISSN 2712-8970 (Print) ISSN 2782-5760 (on-line)

Сведения об образовательной организации

UDK 621.771
STUDIES OF NONEQUILIBRIUM PHASES FORMED AT EXPLOSION WELDING OF TITANIUM AND ALUMINUM
F. M. Noskov 1, L. I. Kveglis 1, V. I. Mali 2, M. B. Leskov 1, E. V. Zakharova 1
1 Siberian Federal University 79g, Svobodny Av., Krasnoyarsk, 660041, Russian Federation 2 Institute of Hydrodynamics them. Lavrenteva SB RAS 15, Lavrentiev Av., Novosibirsk, 630090, Russian Federation
The work is devoted to the study of physical and chemical processes occurring in the contact zone of titanium and aluminum at the joint plastic deformation caused by explosion welding. One of the most effective ways to solve problems of materials science is the development of composite materials. An important advantage of the materials used in aircraft, is their low density, providing the possibility to receive the result composites with high specific strength. This study supports the development of composite materials based on Ti–Al, which can be used for the manufacture of gas turbine blades, and ribbed hollow weldments for the aircraft industry. Explosion welding is a high-energy process, allowing high quality joining dissimilar metal materials including various combinations of materials used for the composite metal–intermetallic compound. Ti–Al system was studied extensively enough, but there remain a number of unclear issues, namely which can form intermetallic phases with the explosion welding. conditions for the formation of a number of intermetallic phases Ti–Al: Al5Ti2, Al11Ti5, Al2Ti, AlTi3, Al3Ti, including in the framework of one formula unit of different types of structures (stable and metastable, virtual) can be implemented. During the mechano-chemical reactions in the contact zone between titanium and aluminum are formed during explosion welding nonequilibrium intermetallic phases: Al2Ti, Al5Ti3, Ti3.3Al. To study the transition zones of the samples structure used a scanning electron microscope JEOL 6390LV. The phase analysis was performed on the X-ray diffractometer company “Bruker” in the emission of copper. It is shown that the mass transfer titanium aluminum atomic clusters directional flow at a rate of at least 35 m / s occurs. Intermetallic phases formed in the contact zone during mechanochemical reactions occurring at the interface of Ti and Al. Processes of structure formation under explosion welding are explained from the standpoint of an abnormally rapid directional mass transfer under conditions of stress, creating a lattice curvature.
Keywords: explosion welding, mass transfer, Mechanochemistry, intermetallic phases, the curvature of the crystal lattice.
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Noskov Fedor Mikhailovich – Cand. Sc., Docent, Docent of Department of Materials and Materials Processing

Technologies, Polytechnic Institute, Siberian Federal University. Е-mail: yesoono@yandex.ru.

Kveglis Lyudmila Iosifovna – Dr. Sc., professor, Siberian Federal University. E-mail: kveglis@list.ru.

Mali Vyacheslav Iosifovich – Cand. Sc., leading researcher, Institute of Hydrodynamics, MA Hydrodynamics SB

RAS. E-mail: mali@hydro.nsc.ru

Leskov Mikhail Borisovich – postgraduate student, Siberian Federal University. E-mail: leskovmb@gmail.com.

Zakharova Elena Valerevna – postgraduate student, Siberian Federal University. E-mail: elena-guryanova@inbox.ru