Formation of fine structure of differentially hardened rails

V. E. Gromov, Yu F. Ivanov, K. V. Morozov, K. V. Alsaraeva

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Differential hardening of rails by compressed air at different regimes is accompanied by formation of morphologically different structure, being formed according to the diffusion mechanism of γ ↔ α transformation and consisting of grains of lamellar pearlite, free ferrite and grains of ferrite-carbide mixture.

By methods of transmission electron microscopy the layer by layer analysis of differentially hardened rails has been carried out, the quantitative parameters of the structure, phase composition and dislocation substructure have been established and their comparison has been made for different regimes of hardening. It has been found that the structure-phase states being formed have gradient character, defined by the hardening regime, direction of study from the tread contact surface and by depth of location of layer under study.

Original languageEnglish
Title of host publicationApplied Mechanics and Materials
PublisherTrans Tech Publications Ltd
Pages41-45
Number of pages5
Volume682
ISBN (Print)9783038352815
DOIs
Publication statusPublished - 2014
Event5th International Scientific Practical Conference on Innovative Technologies and Economics in Engineering, 2014 - Yurga, Russian Federation
Duration: 22 May 201423 May 2014

Publication series

NameApplied Mechanics and Materials
Volume682
ISSN (Print)16609336
ISSN (Electronic)16627482

Other

Other5th International Scientific Practical Conference on Innovative Technologies and Economics in Engineering, 2014
CountryRussian Federation
CityYurga
Period22.5.1423.5.14

Keywords

  • Dislocation substructure
  • Electron microscopy
  • Phase composition
  • Rails
  • Steel
  • Structure

ASJC Scopus subject areas

  • Engineering(all)

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