金属加工（热加工）Issue(4)：61-65,5.
汽车用30CrMnSiA钢零件腐蚀断裂的研究
Study on the corrosion fracture of 30CrMnSiA steel components in automobiles
刘琪 1董玲玲 2胡智 1王莉 1丁小艳 1庞会霞1
作者信息
- 1. 贵州省材料产业技术研究院 贵州贵阳 550025
- 2. 贵州省环境工程评估中心 贵州贵阳 550025
- 折叠
摘要
Abstract
A certain 30CrMnSiA component was stored in a warehouse in Southwest China.During the process of being taken out from the warehouse,it suddenly fractured.In order to analyze the failure of this fracture,various methods such as macroscopic observation,fracture surface morphology analysis,chemical composition analysis,and microscopic structure analysis were employed.The results indicate that the corrosion gap width of the component is approximately 0.089mm,with a large area of dark brown deposits adhering to the gap surface.Energy-dispersive X-ray spectroscopy(EDS)reveals the presence of corrosive media Cl and F near the fracture surface,and X-ray diffraction(XRD)phase analysis indicates the presence of NaCl and Fe3O4.The analysis suggests that the failure is attributed to the coupled effect of gap corrosion and stress.关键词
失效分析/缝隙腐蚀/应力腐蚀/腐蚀产物Key words
failure analysis/gap corrosion/stress corrosion/corrosion products引用本文复制引用
刘琪,董玲玲,胡智,王莉,丁小艳,庞会霞..汽车用30CrMnSiA钢零件腐蚀断裂的研究[J].金属加工（热加工）,2024,(4):61-65,5.
