Analysis of the Fatigue Failure of Rail Steel

被引：6

作者：

Atroshenko, S. A. ^{[1
]}

Mayer, S. S. ^{[2
]}

Smirnov, V. I. ^{[2
]}

机构：

[1] Russian Acad Sci, Inst Mech Engn, St Petersburg 199178, Russia

[2] Alexander First St Petersburg State Univ, St Petersburg 199034, Russia

来源：

PHYSICS OF THE SOLID STATE | 2020年 / 62卷 / 10期

关键词：

rail; cross crack; fracture; fatigue failure; FRACTURE; GROWTH;

D O I：

10.1134/S1063783420100029

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

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 A sample with an internal cross crack in the rail head had been withdrawn from service after severe cyclic loading in a turnout switch.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.

引用

页码：1741 / 1745

页数：5

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