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Strengthening Mechanisms of Rail Metal during Continuous Operation

Authors
  • Gromov, V. E.1
  • Kormyshev, V. E.1
  • Ivanov, Yu. F.2
  • Yuriev, A. A.3
  • Glezer, A. M.4
  • Rubannikova, Yu. A.2
  • 1 Siberian State Industrial University, Novokuznetsk, 654007, Russia , Novokuznetsk (Russia)
  • 2 Institute of High Current Electronics , Siberian Branch, Russian Academy of Sciences, Tomsk, 634055, Russia , Tomsk (Russia)
  • 3 AO EVRAZ Consolidated West Siberian Metallurgical Plant, Novokuznetsk, 654043, Russia , Novokuznetsk (Russia)
  • 4 Institute of Metal Science and Physics, Bardin Central Research Institute of Iron and Steel Industry, Moscow, 105005, Russia , Moscow (Russia)
Type
Published Article
Journal
Inorganic Materials: Applied Research
Publisher
Pleiades Publishing
Publication Date
Nov 01, 2021
Volume
12
Issue
6
Pages
1540–1546
Identifiers
DOI: 10.1134/S2075113321060034
Source
Springer Nature
Keywords
Disciplines
  • Metal Sciences. Metallurgy
License
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Abstract

AbstractA quantitative comparative analysis of the strengthening mechanisms for the surface layers of rails is carried out. It is based on the regularities in forming structure, phase composition, defective substructure, and properties of differentially hardened 100-m rails at different depths (up to 10 mm) and performed in the rail head along the central axis and along the symmetry axis of the fillet in the initial state and after various periods of extreme operation (with the handled tonnage of 691.8 and 1411 million gross tons). These regularities are identified using the methods of modern physical materials science. Contributions to strengthening due to friction of the matrix lattice, intraphase boundaries, dislocation substructure, the presence of carbide particles, internal stress fields, and solid solution strengthening of the pearlite constituent in the steel structure are assessed.

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