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Metals
Failure of a pearlitic rail steel with an internal macrocrack
S. A. Atroshenkoa, S. S. Maierb, V. I. Smirnovb a Institute of Problems of Mechanical Engineering, Russian Academy of Sciences, St. Petersburg, Russia
b Emperor Alexander I St. Petersburg State Transport University, St. Petersburg, Russia
Abstract:
One of most dangerous defects which lead to transverse fractures of rails, namely, internal transverse cracks in a rail head are considered. A rail cross-section surface with a transverse fatigue crack is subjected to a fractographic analysis. The rail sample is taken from the service after many-year service life. The microstructural analysis of the surfaces of the crack and the ambient material shows a substantial degradation of physicochemical properties of rail steel.
Keywords:
rail steel, metallography, fatigue crack, metal microstructure, fracture surface.
Received: 28.11.2020 Revised: 28.11.2020 Accepted: 02.12.2020
Citation:
S. A. Atroshenko, S. S. Maier, V. I. Smirnov, “Failure of a pearlitic rail steel with an internal macrocrack”, Fizika Tverdogo Tela, 63:5 (2021), 575–581; Phys. Solid State, 63:5 (2021), 680–686
Linking options:
https://www.mathnet.ru/eng/ftt8123 https://www.mathnet.ru/eng/ftt/v63/i5/p575
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Abstract page: | 52 | Full-text PDF : | 23 |
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