INFLUENCE HOT PLASTIC DEFORMATION ON THE STRUCTURE AND PROPERTIES OF CARBON STEEL OF THE RAILWAY WHEEL
| Autor: | Igor VAKULENKO, Sergey PLITCHENKO, Dariy BOLOTOVA, Khangardash ASGAROV |
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| Jazyk: | English<br />Polish |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Scientific Journal of Silesian University of Technology. Series Transport, Vol 121, Iss 121, Pp 257-266 (2023) |
| Druh dokumentu: | article |
| ISSN: | 0209-3324 2450-1549 |
| DOI: | 10.20858/sjsutst.2023.121.16 |
| Popis: | 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. |
| Databáze: | Directory of Open Access Journals |
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