Analysis of crack on rail web after flash welding

作者：Li Da^*; Wang Guiguo; Chen Yu; Gou Guoqing; Liu Yan; Ji Hua; Chen Hui

来源：3rd International Conference on Manufacturing Science and Engineering (ICMSE 2012), 2012-03-27 to 2012-03-29.

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

• rail web
• fracture
• inclusion
• hole

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 64.1 mu m.

• 出版日期2012
• 单位西南交通大学