0Cr18Ni9钢连接螺栓断裂分析  

Fracture Failure Analysis on Connecting Bolts of 0Cr18Ni9 Steel

作　　者：张培训[1] 韩文静[1] 

机构地区：[1]永城职业学院,河南永城476600

出　　处：《铸造技术》2013年第7期842-844,共3页Foundry Technology

摘　　要：针对现场发生的连接螺栓断裂失效事故,借助扫描电子显微镜对断口形貌及显微组织进行观察分析。结果表明,显微组织为奥氏体,其断裂失效是在S离子和Cl离子环境作用下发生的应力腐蚀断裂。in view of the failture accidence of connecting bolt fracture happening in site, the rupture appearance and microstructure were observed and analyzed by means of SEM. The results show that the microstructure of the connecting bolt is made of austenitic, and the rupturing failture of the bolt is belong to the stress corrosion fracture under the combining effects of S- ions and Cl^- ions.

关 键 词：连接螺栓 Cl离子 S离子 应力腐蚀 裂纹 

分 类 号：TH131.3[机械工程—机械制造及自动化]