Defect substructure change in 100-m differentially hardened rails in long-term operation

V. E. Gromov, A. A. Yuriev, Yu F. Ivanov, A. M. Glezer, S. V. Konovalov, A. P. Semin, R. V. Sundeev

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

By methods of optical and transmission electron diffraction microscopy the evolution in structural phase states of surface layers head of differentially hardened rails of DT 350 category to the depth up to 10 mm along the central axis after the passed tonnage of 691.8 mln. t brutto was studied. The formation of gradient substructure being expressed in regular change in scalar and excess density of dislocations, curvature-torsion amplitude of steel crystal lattice, degree of deformation transformation of lamellar pearlite structure was defected. The failure mechanisms of cementite plates were considered.

Original languageEnglish
Pages (from-to)224-227
Number of pages4
JournalMaterials Letters
Volume209
DOIs
Publication statusPublished - 15 Dec 2017

Keywords

  • Differentially hardened rails
  • Dislocation density
  • Long-term operation
  • Substructure

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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    Gromov, V. E., Yuriev, A. A., Ivanov, Y. F., Glezer, A. M., Konovalov, S. V., Semin, A. P., & Sundeev, R. V. (2017). Defect substructure change in 100-m differentially hardened rails in long-term operation. Materials Letters, 209, 224-227. https://doi.org/10.1016/j.matlet.2017.07.135