Modelling rail steel microstructure and its effect on crack initiation

FJ Franklin, John Garnham, DI Fletcher, Claire Davis, A Kapoor

Research output: Contribution to journalArticle

41 Citations (Scopus)


The quality of rail steel has improved greatly in recent years and the material is more resistant to wear, plastic deformation and crack initiation: but track forces have also increased,and cracking of rails is a major concern. Different steel microstructures have different wear and rolling contact fatigue (RCF) behaviours when subject to cyclic, rolling-sliding, compressive contact. In order to capture the differences, it is necessary to model these at a microstructural level. This paper describes the development of microstructural models for incorporation into a wear and crack initiation model. A new mechanism is introduced which distinguishes RCF lives of pearlitic microstructures with different percentage volumes of pio-eutectoid ferrite. (C) 2008 F.J. Franklin. Published by Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)1332-1341
Number of pages10
Issue number9-10
Publication statusPublished - 1 Jan 2008


  • ratcheting failure
  • crack initiation
  • rolling contact fatigue
  • pearlitic rail steel
  • computer simulation


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