汽车发动机缸套断裂分析
Failure Analysis of the truck engine cylinder liner
李成明，谭莹，莫明珍
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作者单位：广东出入境检验检疫局检验检疫技术中心
中文关键字：疲劳断裂；微裂纹；失效分析;汽车发动机；缸套
英文关键字：fatigue fracture; micro cracks;failure analysis; truck engine;cylinder liner
中文摘要：运用宏观分析、显微组织检查、断口分析、化学成份与硬度测试等手段对汽车发动机缸套进行了失效分析，结果表明:汽车发动机缸套存在的微裂纹导致早期疲劳断裂。
英文摘要：By means of macroscopic and microstructure examination, fractography, Chemical composition testing,hardness testing and so on, the failure of the truck engine cylinder liner was analyzed. The results show that the early fatigue fracture of the truck engine cylinder liner was caused by the micro cracks.