理化检验-物理分册2011，Vol.47Issue(6)：388-391,4.
发动机曲轴早期疲劳开裂失效分析
Failure Analysis on Early Fatigue Cracking of Engine Crankshaft
王延荣 1刁占英 1迟绍宁 2侯岳 1侯晔星1
作者信息
- 1. 中国北方发动机研究所，大同037036
- 2. 济南柴油机股份有限公司，济南，250306
- 折叠
摘要
Abstract
Methods such as chemical compositions analysis, mechanical properties test, fracture analysis, metallographic examination and superficial nitration case verification were adopted to analyze the engine crankshaft which early fatigue cracked and didn't reach the required load accumulative total cycling times when fatigue test. The results show that the crankshaft was fatigue cracking. There were some large scale hard nonmetallic inclusions at the transition arc where the stress was rather higher, which was main reason for the early fatigue cracking of the crankshaft. The poor processing quality of crankshaft was also crucial reasons for the early fatigue cracking of the crankshaft关键词
曲轴；早期疲劳开裂；夹杂物；应力集中Key words
crankshaft/ early fatigue cracking/ inclusion/ stress concentration分类
交通工程引用本文复制引用
王延荣,刁占英,迟绍宁,侯岳,侯晔星..发动机曲轴早期疲劳开裂失效分析[J].理化检验-物理分册,2011,47(6):388-391,4.
