Comparison of wear and rolling contact fatigue behaviours of bainitic and pearlitic rails under various rolling-sliding conditions
| Autor: | M. Maiorino, Liang Guo, Qiyue Liu, J.P. Liu, Yue Hu, Enrico Meli, W.J. Wang, Roger Lewis, Haohao Ding, Andrea Rindi |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Metallurgy Rolling contact fatigue Wear rolling contact fatigue railway vehicles 02 engineering and technology Surfaces and Interfaces 021001 nanoscience & nanotechnology Condensed Matter Physics Surfaces Coatings and Films Wear resistance 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Materials Chemistry Rolling sliding 0210 nano-technology |
| Zdroj: | Wear. :203455 |
| ISSN: | 0043-1648 |
| DOI: | 10.1016/j.wear.2020.203455 |
| Popis: | Rolling-sliding wear experiments were performed to investigate the wear and rolling contact fatigue (RCF) behaviours of a premium pearlitic rail (PH), a carbon-free bainitic rail (BH) and two standard pearlitic rails (U71Mn and U75V). The wear regime and RCF damage evolution of the PH and BH materials in terms of Tγ/A (i.e. creepages and contact pressures) were compared and analyzed. The high-hardness BH steel presented a wear resistance similar to U71Mn and U75V rail materials, whereas lower wear rate was shown by the PH steel. Concerning the RCF performance, the damage of BH steel (comparable to U75V) was more severe than that of PH steel (comparable to U71Mn). Finally, with the increase in creepages and pressures, the wear and RCF damage of both PH and BH steels increased. These information could provide a guide in choosing rail materials and in development of bainitic rails. |
| Databáze: | OpenAIRE |
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