Rail Strengthening Nature in the Course of Long-Term Operation
- Authors: Gromov V.E.1, Peregudov O.A.1, Glezer A.M.2, Morozov K.V.1, Ivanov Y.F.3,4, Yur’ev A.B.5
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Affiliations:
- Siberian State Industrial University
- Bardin Central Scientific Research Institute of Ferrous Metallurgy
- Institute of High Current Electronics, Siberian Branch
- National Research Tomsk Polytechnic University
- Evraz—United West Siberian Metallurgical Combine LLC
- Issue: Vol 9, No 1 (2018)
- Pages: 26-31
- Section: Article
- URL: https://journals.rcsi.science/2075-1133/article/view/207055
- DOI: https://doi.org/10.1134/S2075113318010148
- ID: 207055
Cite item
Abstract
Using the methods of transmission electron diffraction microscopy and measurement of microhardness, the regularities of the change in the structural-phase states and defective substructure of the surface layers of rails up to 10 mm by fillet after long-term operation (the passed tonnage of 1000 million tons gross) are established. The possible causes of the observed regularities are discussed. A quantitative analysis of the mechanisms of strengthening of rails at different distance from the rolling surface by fillet after long-term operation is carried out. It is shown that strengthening is multifactorial in nature and is due to substructural strengthening caused by the formation of nanoscale fragments; dispersion strengthening by carbide phase particles; strengthening caused by the formation of Cottrell and Suzuki atmospheres on dislocations; internal stress fields, formed inside; and interphase boundaries.
About the authors
V. E. Gromov
Siberian State Industrial University
Author for correspondence.
Email: gromov@physics.sibsiu.ru
Russian Federation, Novokuznetsk
O. A. Peregudov
Siberian State Industrial University
Email: gromov@physics.sibsiu.ru
Russian Federation, Novokuznetsk
A. M. Glezer
Bardin Central Scientific Research Institute of Ferrous Metallurgy
Email: gromov@physics.sibsiu.ru
Russian Federation, Moscow
K. V. Morozov
Siberian State Industrial University
Email: gromov@physics.sibsiu.ru
Russian Federation, Novokuznetsk
Yu. F. Ivanov
Institute of High Current Electronics, Siberian Branch; National Research Tomsk Polytechnic University
Email: gromov@physics.sibsiu.ru
Russian Federation, Tomsk; Tomsk
A. B. Yur’ev
Evraz—United West Siberian Metallurgical Combine LLC
Email: gromov@physics.sibsiu.ru
Russian Federation, Novokuznetsk