PHYSICAL NATURE OF RAILS STRENGTHENING DURING LONG OPERATION
https://doi.org/10.17073/0368-0797-2016-6-414-419
Abstract
Rails operation (500 and 1000 mln. t. gross tonnage passed) leads to considerable enhancement of surface layer. The quantitative analysis of rails strengthening mechanisms at different distances from the rolling surface after the long-term operation was carried out using the results of transmission electron microscopy studies. It was shown that enhancement has multifactor character and depends on substructure strengthening caused by nanosize fragments formation; dispersion strengthening by carbide phase particles; strengthening caused by dislocation atmospheres formation; internal stress fields formed by intraand interface boundaries. Significant increase of surface layer strength of rail steel under long term operation (1000 mln tons gross passed tonnage) depends on far acting stress fields formed in material and material fragmentation with nanosize structure formation.
About the Authors
V. E. Gromov
Siberian State Industrial University, Novokuznetsk, Russia
Russian Federation
Russian Federation
Dr. Sci. (Phys.-math.), Professor, Head of Chair of Physics named after V.M. Finkel
Yu. F. Ivanov
Institute of High Current Electronics SB RAS, Tomsk, Russia
National Research Tomsk Polytechnical University, Tomsk, Russia
National Research Tomsk State University, Tomsk, Russia
Russian Federation
Russian Federation
Dr. Sci. (Phys.-math.), Professor, Leading Researcher
K. V. Morozov
Siberian State Industrial University, Novokuznetsk, Russia
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Engineer of the Chair of Physics named after V.M. Finkel
O. A. Peregudov
Siberian State Industrial University, Novokuznetsk, Russia
Russian Federation
Russian Federation
Engineer of Chair of Physics named after V.M. Finkel
A. B. Yur’ev
Siberian State Industrial University, Novokuznetsk, Russia
OJSC “EVRAZ - Joint West Siberian Metallurgical Plant”, Novo- kuznetsk, Russia
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Professor of Chair “Metal Forming and Metal Science”, Managing Director
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Review
For citations:
Gromov V.E., Ivanov Yu.F., Morozov K.V., Peregudov O.A., Yur’ev A.B. PHYSICAL NATURE OF RAILS STRENGTHENING DURING LONG OPERATION. Izvestiya. Ferrous Metallurgy. 2016;59(6):414-419. (In Russ.) https://doi.org/10.17073/0368-0797-2016-6-414-419
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