第35卷第5期 2014年10月
·失效分析·
热处理技术与装备
RECHULIJISHUYUZHUANCBEI
受电弓拉杆断裂失效分析涂建国，胡海丽，黄凤，司亚春（深圳市材料表面分析检测中心，广东深圳518117)
Vol.35,No.5 Oet,2014
摘要：采用微观扫描及金相检验等方法对受电弓拉杆断裂的原因进行了分析。结果表明，受电弓
拉杆断裂是由于承受着拉应力和焊接残余应力，导致拉杆过早的产生疲劳和应力腐蚀断裂。关键词：受电弓拉杆：残余应力；应力腐蚀
中图分类号：TC115
5文献标志码：A
文章编号：1673-4971(2014)05-0030-04
Fracture Failure Analysis of Pantograph Rod TU Jian-guo,HU Hai-li, Huang Feng, SI Ya-chun
(Shenzhen Center for Analysis and Measurement of Material Surface,Shenzhen Guangdong 518117,China) Abstract: The reason for fracture of pantograph rod was analyzed by SEM and metallographic testing.The results showed that the fracture of pantograph rod was due to under tensile stress and welding residual stress,which led to premature rod fatigue and stress corrosion cracking+
Keywords:pantograph rod;residual stress;stress corrosion 收搞日期：2014-07-13
作者简介：涂建国（1985-），男，高级化验员，从事材料方面的分析研究工作。
联系电话：13632760326;E-mail：TJG863@126.com
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