Research on the Degradation Process of Railway Rails Dueto Lifespan Exceeding

Archives of Metallurgy and Materials

article

A.C. Berbecaru¹  G. Coman¹  S. Ciucă¹  I.A. Gherghescu¹  M.G. Sohaciu¹  C. Grădinaru¹  C. Predescu¹ 

[1] Politehnica University of Bucharest, Faculty of Materials Science and Engineering

关键词: Degradation;    Advanced wear;    Fatigue fracture;    Railway rails lifespan;   

DOI  :  10.24425/amm.2022.137787

学科分类：物理（综合）

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

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

【 授权许可】

CC BY-NC