Failure analysis of a cast steel railway wheel

被引:23
作者
Fuoco, R [1 ]
Ferreira, MM [1 ]
Azevedo, CRF [1 ]
机构
[1] Inst Pesquisas Tecnol Estado Sao Paulo SA, Div Met, BR-01064970 Sao Paulo, Brazil
基金
巴西圣保罗研究基金会;
关键词
failure analysis; fractography; cast steel; fatigue; railway engineering;
D O I
10.1016/j.engfailanal.2004.03.004
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The failure analysis of a broken railway pearlitic cast steel railway wheel, which was involved in a train derailment, has been investigated. The fractographic results near the fracture origin of the wheel have been compared to the regions of stable (fatigue) and unstable crack propagation of cast steel fracture toughness samples. The macro and microfractographic features of the broken wheel did not show any evidence of the occurrence of a fatigue mechanism, indicating that its fracture was caused by transgranular cleavage fracture, as a consequence of the train derailment. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码:817 / 828
页数:12
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