Abstract
One of the most dangerous defects leading to transverse fractures of rails is internal transverse cracks in the rail head. In this work, a fractographic analysis of the cross-sectional surface of a rail with a transverse fatigue crack is carried out. The rail sample was taken out of work after many years of service. Microstructural analysis of the crack surface and the surrounding material shows a significant degradation of the physical and mechanical properties of the rail steel.
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