GH4169弹簧片失效分析  

Failure Analysis of GH4169 Spring Piece

作　　者：杨建菊[1] 阎光宗[1] 孙澎[1] 赵纪峰[1] 

机构地区：[1]河北省电力研究院,河北石家庄050021

出　　处：《热加工工艺》2012年第10期222-223,226,共3页Hot Working Technology

摘　　要：对某电厂中压缸汽封弹簧片断裂试样进行宏观形貌、化学成分、显微组织和断口形貌分析。结果表明,显微组织中存在的较多碳化物、析出物是弹簧片断裂的内在因素,运行时高温氧化和疲劳最终导致了弹簧片脆性断裂。The failure spring piece in intermediate pressure cylinder was analyzed by macroscopic analysis,chemical composition,microstructure and fracture appearance analysis.The results show that more carbonization and precipitate in microstructure are the interior factors for spring piece facture,high temperature oxidation and fatigue contribute to brittle fracture.

关 键 词：弹簧片 脆性断裂 析出物 高温氧化 疲劳 

分 类 号：TG142[一般工业技术—材料科学与工程]