ULTRAFINE-GRAINED STRUCTURE FORMATION IN CARBON STEEL BY HIGH-SPEED COMPRESSION DEFORMATION AT INCREASED TEMPERATURES
https://doi.org/10.17073/0368-0797-2016-2-123-127
Abstract
The velocity increase of plastic deformation leads to significant changes in the microstructure of metallic materials. The structure and properties of the metal defi ne such factors as pressure value (or impulse), deformation velocity (or the duration of the process) and temperature. The work is devoted to the research of the influence of high-velocity deformation on the microstructure of materials. Using research complex Gleeble 3500 high-speed deformation of steel grade 20 at temperatures of 800, 900, 1000 and 1200 °C was carried out. The microstructure was studied and the microhardness of samples was determined. The principal possibility to provide strain refi nement of low-carbon steel structure up to a grain size of about 400 nanometers during high-speed deformation at temperatures of 800–1000 °C is shown, just as it is achieved at a severe plastic deformation without heating or with a slight heating which doesn’t exceed the recrystallization temperature.
About the Authors
N. V. Koptseva
Magnitogorsk State Technical University named after G.I. Nosov, Magnitogorsk, Russia
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Professor of the Chair “Foundry and Materials Science”
Yu. Yu. Efi mova
Magnitogorsk State Technical University named after G.I. Nosov, Magnitogorsk, Russia
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Assist. Professor of the Chair “Engineering and Metallurgical Technology”
O. A. Nikitenko
Magnitogorsk State Technical University named after G.I. Nosov, Magnitogorsk, Russia
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Senior Lecturer of the Chair “Engineering and Metallurgical Technology”
M. P. Baryshnikov
Magnitogorsk State Technical University named after G.I. Nosov, Magnitogorsk, Russia
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Assist. Professor of the Chair “Engineering and Metallurgical Technology”
M. S. Zherebtsov
Magnitogorsk State Technical University named after G.I. Nosov, Magnitogorsk, Russia
Russian Federation
Postgraduate
Russian Federation
Postgraduate
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Review
For citations:
Koptseva N.V., Efi mova Yu.Yu., Nikitenko O.A., Baryshnikov M.P., Zherebtsov M.S. ULTRAFINE-GRAINED STRUCTURE FORMATION IN CARBON STEEL BY HIGH-SPEED COMPRESSION DEFORMATION AT INCREASED TEMPERATURES. Izvestiya. Ferrous Metallurgy. 2016;59(2):123-127. (In Russ.) https://doi.org/10.17073/0368-0797-2016-2-123-127
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