Analysis of crack on rail web after flash welding

被引：1
|
作者：
Li, Da [1 ]
Wang, Guiguo [2 ]
Chen, Yu [3 ]
Gou, Guoqing [1 ]
Liu, Yan [1 ]
Ji, Hua [1 ]
Chen, Hui [1 ]
机构：
[1] SW Jiaotong Univ, Sch Mat Sci & Engn, Chengdu 610031, Peoples R China
[2] CNR Tangshan Railway Vechicle Co Ltd, Tangshan 063035, Peoples R China
[3] Lanzhou Jiaotong Univ, Sch Mech & Elect Engn, Lanzhou 730000, Peoples R China
来源：
ADVANCED MANUFACTURING TECHNOLOGY, PTS 1-4 | 2012年 / 472-475卷
关键词：
rail web; fracture; inclusion; hole; BUTT-WELDS; STEEL; GROWTH;
D O I：
10.4028/www.scientific.net/AMR.472-475.1271
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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.
引用
收藏
页码：1271 / +
页数：2
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