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| Research Progress on Corrosion of Heavy Rail Steel |
| Received:January 10, 2020 Revised:March 20, 2020 |
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| DOI：10.7643/issn.1672-9242.2020.08.008 |
| KeyWord:heavy rail steel atmospheric corrosion corrosion mechanism electrochemical microstructure alloying elements |
| Author | Institution |
| WU Shi-jie |
School of Materials and Metallurgy, Baotou , China |
| LIU Li-xia |
School of Materials and Metallurgy, Baotou , China;Inner Mongolia Key Laboratory of Advanced Ceramic Materials and Devices, Inner Mongolia University of Science and Technology, Baotou , China |
| PENG Jun |
School of Materials and Metallurgy, Baotou , China;Inner Mongolia Key Laboratory of Advanced Ceramic Materials and Devices, Inner Mongolia University of Science and Technology, Baotou , China |
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| Abstract: |
| The corrosion of steel rails is related to many major problems such as railway operation efficiency and safety of transportation systems, so the corrosion resistance of heavy rail steel is as important as the strength, hardness and wear resistance. At present, there is little research on the corrosion of heavy rail steel, and the research on the corrosion resistance of heavy rail steel should be highly valued. The research on heavy rail steel at home and abroad was introduced and the effects of different alloying elements such as Cr, Nb, Cu, Si, Mn, Ti, Al, Cr or Ni on the corrosion resistance of heavy rail steel were summarized. The heavy rail steel with different microstructures (pearlite, Bayesian, martensite and austenite) was described and the influence of these microstructures on the corrosion resistance of the heavy rail steel was analyzed. Moreover, the influence of different heat treatment or processing technologies on the corrosion resistance of heavy rail steel was also clarified. Finally, combining the corrosion mechanism of heavy rail steel, the formation mechanism of rust layer and the electrochemical process, as well as the main factors affecting metal atmospheric corrosion, several research directions to improve the corrosion resistance of heavy rail steel were put forward. |
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