Influence Hot Plastic Deformation on the Structure and Properties of Carbon Steel of the Railway Wheel
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Date
2023
Journal Title
Journal ISSN
Volume Title
Publisher
Politechnika Śląska
Abstract
ENG: The study is devoted to the explanation of the influence of hot plastic
deformation on the properties of railway wheels. The shape of individual elements
of the wheel provides for a different degree of hot compression, which determines
the mechanism for the development of the recrystallization at austenite. With a
decrease in the degree of the hot deformation, a certain proportion of grains with a
low energy of linear stretching are formed in austenite. As a result, of the low
mobility of such boundaries, the likelihood of preservation of part of the
substructural state of the austenite increases, which should affect the formation of
a colony of perlite during the cooling of the carbon steel. Against background
preservation and a dependence of strength properties on the dispersion of the
pearlite colony, the appearance in austenite of grain boundaries with a low energy
of linear tension leads to a qualitative change in the plastic properties of railway
wheel steel. The increase in plasticity of carbon steel with an increase in dispersion of the pearlite colony is due to a decrease in the effect of solid solution hardening
and an increase in the role of the ferrite-cementite interface in the development
processes of strain hardening carbon steel. The results obtained can be useful for
improving the technology of manufacturing all-rolled railway wheels.
Description
I. Vakulenko:ORCID 0000-0002-7353-1916;
S. Plitchenko: ORCID 0000-0002-0613-2544;
D. Bolotova: ORCID 0000-0002-7353-1916;
Kh. Asgarov: ORCID: 0000-0003-4771-3406
Keywords
railway wheel, carbon steel, mechanical properties, hot deformation, boundary, austenite, КІСЕ
Citation
Vakulenko I., Plitchenko S., Bolotova D., Asgarov K. Influence Hot Plastic Deformation on the Structure and Properties of Carbon Steel of the Railway Wheel. Scientific Journal of Silesian University of Technology. Series : Transport. 2023. Vol. 121. P. 257–266. DOI: https://doi.org/10.20858/sjsutst.2023.121.16.