扭簧断裂分析  

Fracture Analysis of Turn-Spring

作　　者：王大为[1] 胡成江[1] 

机构地区：[1]成都飞机工业集团有限公司,成都610092

出　　处：《失效分析与预防》2006年第3期57-59,共3页Failure Analysis and Prevention

摘　　要：扭簧装配后36h内发生断裂,对扭簧断裂的宏观与微观形貌特征进行了观察与分析,并对断裂扭簧的氢含量、金相组织以及化学成分进行了分析,对扭簧进行了对比模拟试验。结果表明,扭簧断裂性质为氢致脆性断裂,扭簧中较高的氢含量是造成使用中发生断裂的主要原因。Certain turn-spring ruptured in 36 hours after assembly. Macro-morphology and micro morphology of the fracture surface and metallurgical structure were inspected. The content of hydrogen and chemical composition were also analysized. Analog test was carried out to compare and analyze the cause of fracture. The results show that the fracture mode is hydrogen brittle and the excessive hydrogen content is the main cause of fracture.

关 键 词：扭簧 断裂 热处理 氢脆 

分 类 号：TG111.91[金属学及工艺—物理冶金]