摘要
通过对某型柴油机活塞裙裂纹宏观观察、扫描电镜微观形貌分析和微区成分检测,分析了其开裂失效的原因。结果表明,材料中的缩松缺陷是引起活塞裙疲劳开裂的主要原因,并提出了改善措施。
The cause of cracking failure of a diesel engine piston skirt was analysed through the macroscopic observation of crack, SEM microscopic morphologies analysis and micro area composition detection. The results show that the main cause of fatigue cracking is shrinkage defect in the material, and the improved measurements were also put forward.
出处
《热加工工艺》
CSCD
北大核心
2017年第15期250-251,共2页
Hot Working Technology
关键词
铝合金
活塞裙
疲劳
缩松
aluminum alloy
piston skirt
fatigue
shrinkage
