Contributions of Various Mechanisms to the Hardening of Differentially Quenched Rails during Long-Term Operation

Yu. F. Ivanov; V. E. Gromov; A. A. Yur’ev; A. M. Glezer; N. A. Popova; O. A. Peregudov; S. V. Konovalov

doi:10.1134/S0036029518100099

Contributions of Various Mechanisms to the Hardening of Differentially Quenched Rails during Long-Term Operation

Autores: Ivanov Y.¹^,2, Gromov V.³, Yur’ev A.³, Glezer A.⁴, Popova N.⁵, Peregudov O.⁶, Konovalov S.⁷
Afiliações:
1. Institute of High-Current Electronics, Siberian Branch, Russian Academy of Sciences
2. Tomsk Polytechnic University
3. Siberian State Industrial University
4. Bardin Central Research Institute for Ferrous Metallurgy
5. Tomsk State University of Architecture and Building
6. Omsk State Technical University
7. Samara National Research University
Edição: Volume 2018, Nº 10 (2018)
Páginas: 985-989
Seção: Applied Problems of Strength and Plasticity
URL: https://journals.rcsi.science/0036-0295/article/view/172668
DOI: https://doi.org/10.1134/S0036029518100099
ID: 172668

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The contributions of the mechanisms of strain hardening of differentially quenched rails are quantitatively analyzed as functions of the distance from the roll surface. The carbon distribution in the structure of rails after ground tests is studied. The main contribution to the hardening of rail steel is shown to be made by long-range stress fields and the dislocation substructure that forms during deformation. Substantial carbon redistribution is detected in rails during operation.