2D and 3D characterization of rolling contact fatigue cracks in manganese steel wing rails from a crossing

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Rail wheel contact at switches and crossings (S&Cs) induces impact stresses along with rolling contact stresses,resulting in plastic deformation and eventually crack formation. Damaged and deformed wing rails of a man-ganese steel crossing are studied and the microstructure, hardness and 3D crack network within the steel arecharacterized. It is found that the surface of the rail receives the maximum deformation resulting in a hardenedtop layer. The deformation is manifested by a high density of twins and dislocation boundaries in the micro-structure. A complex crack network is revealed in high resolution by X-ray tomography.
Original languageEnglish
Article number202959
JournalWear
Volume436-437
ISSN0043-1648
DOIs
Publication statusPublished - 2019

Keywords

  • Switches and crossings (S&Cs)
  • Deformation
  • 3D X-Ray tomography
  • 2D & 3D crack network
  • Rolling contact fatigue (RCF)
  • Manganese steel

Cite this

@article{5dfb4a1014b64597b3b9c5df5301aabe,
title = "2D and 3D characterization of rolling contact fatigue cracks in manganese steel wing rails from a crossing",
abstract = "Rail wheel contact at switches and crossings (S&Cs) induces impact stresses along with rolling contact stresses,resulting in plastic deformation and eventually crack formation. Damaged and deformed wing rails of a man-ganese steel crossing are studied and the microstructure, hardness and 3D crack network within the steel arecharacterized. It is found that the surface of the rail receives the maximum deformation resulting in a hardenedtop layer. The deformation is manifested by a high density of twins and dislocation boundaries in the micro-structure. A complex crack network is revealed in high resolution by X-ray tomography.",
keywords = "Switches and crossings (S&Cs), Deformation, 3D X-Ray tomography, 2D & 3D crack network, Rolling contact fatigue (RCF), Manganese steel",
author = "S. Dhar and Danielsen, {Hilmar Kjartansson} and S{\o}ren F{\ae}ster and Rasmussen, {Christian J{\o}rgen} and {Juul Jensen}, Dorte",
year = "2019",
doi = "10.1016/j.wear.2019.202959",
language = "English",
volume = "436-437",
journal = "Wear",
issn = "0043-1648",
publisher = "Elsevier",

}

2D and 3D characterization of rolling contact fatigue cracks in manganese steel wing rails from a crossing. / Dhar, S.; Danielsen, Hilmar Kjartansson; Fæster, Søren; Rasmussen, Christian Jørgen; Juul Jensen, Dorte.

In: Wear, Vol. 436-437, 202959, 2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - 2D and 3D characterization of rolling contact fatigue cracks in manganese steel wing rails from a crossing

AU - Dhar, S.

AU - Danielsen, Hilmar Kjartansson

AU - Fæster, Søren

AU - Rasmussen, Christian Jørgen

AU - Juul Jensen, Dorte

PY - 2019

Y1 - 2019

N2 - Rail wheel contact at switches and crossings (S&Cs) induces impact stresses along with rolling contact stresses,resulting in plastic deformation and eventually crack formation. Damaged and deformed wing rails of a man-ganese steel crossing are studied and the microstructure, hardness and 3D crack network within the steel arecharacterized. It is found that the surface of the rail receives the maximum deformation resulting in a hardenedtop layer. The deformation is manifested by a high density of twins and dislocation boundaries in the micro-structure. A complex crack network is revealed in high resolution by X-ray tomography.

AB - Rail wheel contact at switches and crossings (S&Cs) induces impact stresses along with rolling contact stresses,resulting in plastic deformation and eventually crack formation. Damaged and deformed wing rails of a man-ganese steel crossing are studied and the microstructure, hardness and 3D crack network within the steel arecharacterized. It is found that the surface of the rail receives the maximum deformation resulting in a hardenedtop layer. The deformation is manifested by a high density of twins and dislocation boundaries in the micro-structure. A complex crack network is revealed in high resolution by X-ray tomography.

KW - Switches and crossings (S&Cs)

KW - Deformation

KW - 3D X-Ray tomography

KW - 2D & 3D crack network

KW - Rolling contact fatigue (RCF)

KW - Manganese steel

U2 - 10.1016/j.wear.2019.202959

DO - 10.1016/j.wear.2019.202959

M3 - Journal article

VL - 436-437

JO - Wear

JF - Wear

SN - 0043-1648

M1 - 202959

ER -