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Research on the Degradation Process of Railway Rails Due to Lifespan Exceeding

Berbecaru Andrei-Constantin, Coman George, Ciucă Sorin, Gherghescu Ioana-Arina, Sohaciu Mirela, Grădinaru Catalin, Predescu Cristian

Archives of Metallurgy and Materials

2022

Vol. 67, iss. 2

535--540

The paper presents the impact of exceeding the railway rails lifespan which usually causes a railway structural failure, thus an accident. The research highlights the rails’s high degradation, especially on the running area, consisting in 60-70% weight loss by advanced wear of the rail, followed by fatigue fracture caused by alternating cyclic stresses that initiates the crack and also by tensile stresses resulting in the crack growth. The chemical composition, structural and mechanical properties were analyzed in order to establish the causes that led to the railway rails rupture.