Using the methods of transmission electron microscopy, the structure, phase composition and defect substructure of the surface fluting layers of special-purpose rails is studied after their long-term operation. It is shown that the ferrite and cementite plates contain defects and dislocations chaotically distributed in the material or forming a network substructure. The formation of regions with submicro- and nanocrystalline multiphase structure is observed, where the sizes of the α-phase and cementite crystallites are found to be 50–75 and 3–8 nm, respectively. There are regions with globular cementite inclusions measuring 150–200nm.
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Gromov, V.E., Potekaev, A.I., Porfiriev, M.A. et al. Formation of Fine Structure of Fluting Surfaces of Special-Purpose Rails After Their Long-Term Operation. Russ Phys J 66, 321–327 (2023). https://doi.org/10.1007/s11182-023-02942-z
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DOI: https://doi.org/10.1007/s11182-023-02942-z