INVESTIGATION OF THE CARBON MONOXIDE OF E90AF RAIL STEEL WHEN HEATED FOR ROLLING
Aleksandr V. Pimakhin, 
Tat’yana N. Oskolkova,
Olga V. Kuznetsova,
Mikhail V. Temlyantsev,
Elena N. Temlyantseva,
Ekaterina M. Zapol’skaya
Tat’yana N. Oskolkova,
Olga V. Kuznetsova,
Mikhail V. Temlyantsev,
Elena N. Temlyantseva,
Ekaterina M. Zapol’skaya https://doi.org/10.57070/2304-4497-2024-2(48)-136-140
Abstract
The paper studies the regularities of structure formation in samples of titanium alloy Ti‒6Al‒4V obtained by additive wire-feed electron beam manufacturing and undergone to friction stir processing. The studies conducted show that during the processing there is an intensive interaction between the tool and the material, which leads to significant changes in the structure of the stir zone. The interaction between the nickel-base superalloy tool and the material is of an adhesive, mechanical, thermal and diffusion nature. Its characteristics determine the formation of the structure and material properties of the stir zone and, consequently, of the obtained parts. For this reason, in this study, the main defects and inhomogeneities formed in the stirred zone of the samples have been considered in comparison with the processes occurring in the area of contact between the tool and the material. The main changes in the structure of the titanium alloy Ti‒6Al‒4V after friction stir processing, caused by its interaction with the nickel tool, are formed in the areas of the stir zone with a composite structure with a high local volume fraction of intermetallic phases. During processing, the tool can be excessively penetrated in the material in such a way that it touches the substrate in the lower part of the plate. Even a slight penetration of the tool into the substrate leads to the penetration of steel particles into the stir zone due to the vertical flow of material in the stir zone. The described changes with the formation of a number of inhomogeneities and defects in the structure after processing lead to a decrease in the plasticity and strength of the samples in comparison with the material with a defect-free structure.
About the Authors
Aleksandr V. Pimakhin
Siberian State Industrial University
Russian Federation
Russian Federation
a leading specialist in additional professional education at the Center for Additional Professional Education
Tat’yana N. Oskolkova
Siberian State Industrial University
Dr. Sci. (Eng.), Prof. of the Departments of Ferrous Metallurgy and Chemical Technology
Olga V. Kuznetsova
Siberian State Industrial University
undergraduate student
Mikhail V. Temlyantsev
Siberian State Industrial University
Dr. Sci. (Eng.), Professor of the Department of Thermal Power Engineering and Ecology
Elena N. Temlyantseva
Siberian State Industrial University
Cand. Sci. (Eng.), Assist. Prof., Acting Head of the Chair “Thermal Power and Ecology”
Ekaterina M. Zapol’skaya
Siberian State Industrial University
Lecturer of the Department of Thermal Power Engineering and Ecology
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Review
For citations:
Pimakhin A., Oskolkova T., Kuznetsova O., Temlyantsev M., Temlyantseva E., Zapol’skaya E. INVESTIGATION OF THE CARBON MONOXIDE OF E90AF RAIL STEEL WHEN HEATED FOR ROLLING. Bulletin of the Siberian State Industrial University. 2024;(2):136-140. (In Russ.) https://doi.org/10.57070/2304-4497-2024-2(48)-136-140
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