Rail Strengthening Nature in the Course of Long-Term Operation

V. E. Gromov, O. A. Peregudov, A. M. Glezer, K. V. Morozov, Yu F. Ivanov, A. B. Yur’ev

Research output: Contribution to journalArticle

1 Citation (Scopus)

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.

Original languageEnglish
Pages (from-to)26-31
Number of pages6
JournalInorganic Materials: Applied Research
Volume9
Issue number1
DOIs
Publication statusPublished - 1 Jan 2018

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Rails
Electron diffraction
Microhardness
Carbides
Residual stresses
Microscopic examination
Chemical analysis

Keywords

  • defective substructure
  • operation
  • phase composition
  • rails
  • strengthening mechanisms
  • structure
  • surface

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

Cite this

Gromov, V. E., Peregudov, O. A., Glezer, A. M., Morozov, K. V., Ivanov, Y. F., & Yur’ev, A. B. (2018). Rail Strengthening Nature in the Course of Long-Term Operation. Inorganic Materials: Applied Research, 9(1), 26-31. https://doi.org/10.1134/S2075113318010148

Rail Strengthening Nature in the Course of Long-Term Operation. / Gromov, V. E.; Peregudov, O. A.; Glezer, A. M.; Morozov, K. V.; Ivanov, Yu F.; Yur’ev, A. B.

In: Inorganic Materials: Applied Research, Vol. 9, No. 1, 01.01.2018, p. 26-31.

Research output: Contribution to journalArticle

Gromov, VE, Peregudov, OA, Glezer, AM, Morozov, KV, Ivanov, YF & Yur’ev, AB 2018, 'Rail Strengthening Nature in the Course of Long-Term Operation', Inorganic Materials: Applied Research, vol. 9, no. 1, pp. 26-31. https://doi.org/10.1134/S2075113318010148
Gromov, V. E. ; Peregudov, O. A. ; Glezer, A. M. ; Morozov, K. V. ; Ivanov, Yu F. ; Yur’ev, A. B. / Rail Strengthening Nature in the Course of Long-Term Operation. In: Inorganic Materials: Applied Research. 2018 ; Vol. 9, No. 1. pp. 26-31.
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