Journal article
2D and 3D characterization of rolling contact fatigue cracks in manganese steel wing rails from a crossing
Department of Wind Energy, Technical University of Denmark1
Wind Turbine Structures and Component Design, Department of Wind Energy, Technical University of Denmark2
Composite Mechanics and Structures, Department of Wind Energy, Technical University of Denmark3
Banedanmark4
Manufacturing Engineering, Department of Mechanical Engineering, Technical University of Denmark5
Department of Mechanical Engineering, Technical University of Denmark6
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.
| Language: | English |
|---|---|
| Year: | 2019 |
| Pages: | 202959 |
| ISSN: | 18732577 and 00431648 |
| Types: | Journal article |
| DOI: | 10.1016/j.wear.2019.202959 |
| ORCIDs: | Dhar, S. , Danielsen, Hilmar Kjartansson , Fæster, Søren and Juul Jensen, Dorte |
