Analysis of Crack on Rail Web after Flash Welding

Da Li; Gui Guo Wang; Yu Chen; Guo Qing Gou; Yan Liu; Hua Ji; Hui Chen

doi:10.4028/www.scientific.net/AMR.472-475.1271

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 472-475Analysis of Crack on Rail Web after Flash Welding

Analysis of Crack on Rail Web after Flash Welding

Abstract:

A failure U71Mn rail steel was investigated by stereomicroscopic, scanning electron microscopy (SEM), energy dispersive spectrometer (EDS) and laser scanning confocal microscope (LSCM). The results show that, the crack is initiated from heat affected zone (HAZ) of the rail web. The inclusions (Al2O3, SiO2) and the holes in the rail web are the main reasons for the fracture. The deepest of the hole is 64.1μm.

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Periodical:

Advanced Materials Research (Volumes 472-475)

Pages:

1271-1274

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.472-475.1271

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Online since:

February 2012

Authors:

Da Li, Gui Guo Wang, Yu Chen, Guo Qing Gou, Yan Liu, Hua Ji, Hui Chen

Keywords:

Fracture, Hole, Inclusion, Rail Web

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