This article is cited in 10 papers

Metals

Rail steel fracture analysis under conditions of railroad switch

S. A. Atroshenko^a, S. S. Maier^b, V. I. Smirnov<sup>b

a</sup> Institute of Problems of Mechanical Engineering, Russian Academy of Sciences, St. Petersburg
^b Emperor Alexander I St. Petersburg State Transport University

Abstract: The correlation between the mechanical properties of a material in microvolumes and the material under a load has been studied. A fractographic analysis is performed for the surface of fatigue failure of a railway rail with an internal cross crack. The correlation of the fractographic features with the material structure is discussed. A sample with an internal cross crack in the rail head had been withdrawn from service after severe cyclic loading in a turnout switch. For the metallographic study, the sample was subjected to a three-point bending. Three regions with different characters of the material fracture have been revealed at the surface of the fracture.

Keywords: rail, cross crack, fracture, fatigue failure.

Received: 21.04.2020
Revised: 21.04.2020
Accepted: 29.05.2020

DOI: 10.21883/FTT.2020.10.49898.094

 English version: Physics of the Solid State, 2020, 62:10, 1741–1745

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