FORMATION OF STRUCTURE-PHASE STATES IN RAILS OF HIGH QUALITY CLASS
https://doi.org/10.17073/0368-0797-2016-4-256-260
Abstract
The quantitative parameters of structure phase states and dislocation substructure in volumetric quenched rails of high quality class were established by methods of transmission electron diffraction microscopy. In accordance with the morphological indication the following structure constituents of rail steel were selected: plate perlite, grains of ferrite-carbide mixture and grains of structure-free ferrite. The grains of perlite are main type of steel structure, their relative content is 0.68; relative content of ferrite-carbide grains is 0.28; the grains of structure free ferrite is rest. The analysis of curvature extinction contours was carried out and it was shown that interfaces of cementite plates of perlite grains; interfaces of perlite and ferrite grains; interfaces of globular particles of carbides – ferrite matrix are the sources of stress concentrators. It was established that interfaces of globular particles of carbides – ferrite matrix are the places with the highest value of stress concentrates. They were regarded as the places of possible crack formation.
About the Authors
O. A. Peregudov
Siberian State Industrial University, Novokuznetsk, Russia
Russian Federation
Russian Federation
Candidates for a degree of Cand. Sci. (Eng.) of the Chair of Physics named after V.M. Finkel
V. E. Gromov
Siberian State Industrial University, Novokuznetsk, Russia
Russian Federation
Russian Federation
Dr. Sci. (Phys.-math.), Professor, Head of the Chair of Physics named after V.M. Finkel
Yu. F. Ivanov
National Research Tomsk State University, Tomsk, Russia
Institute of High Current Electronics SB RAS, Tomsk, Russia
Russian Federation
Dr. Sci. (Phys.-math.), Leading Researcher, Professor
Russian Federation
Dr. Sci. (Phys.-math.), Leading Researcher, Professor
K. V. Morozov
Siberian State Industrial University, Novokuznetsk, Russia
Russian Federation
Russian Federation
Engineer, Candidates for a degree of Cand. Sci. (Eng.) of the Chair of Physics named after V.M. Finkel
S. V. Konovalov
Siberian State Industrial University, Novokuznetsk, Russia
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Professor of the Chair of Physics named after V.M. Finkel
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Review
For citations:
Peregudov O.A., Gromov V.E., Ivanov Yu.F., Morozov K.V., Konovalov S.V. FORMATION OF STRUCTURE-PHASE STATES IN RAILS OF HIGH QUALITY CLASS. Izvestiya. Ferrous Metallurgy. 2016;59(4):256-260. (In Russ.) https://doi.org/10.17073/0368-0797-2016-4-256-260
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