钛合金气瓶液压强度失效分析  

Failure Analysis of Titanium Alloy Pressure Vessels in Hydraulic Strength Test

作　　者：赵军静[1] 易凡 吕华英 许猛[1] 张涛[1] 崔海超 刘振波[1] Zhao Junjing;Yi Fan;Lü Huaying;Xu Meng;Zhang Tao;Cui Haichao;Liu Zhenbo(Capital Aerospace Machinery Co.,Ltd.,Beijing 100076,China)

机构地区：[1]首都航天机械公司

出　　处：《压力容器》2019年第8期57-61,共5页Pressure Vessel Technology

摘　　要：针对某液压强度试验钛合金气瓶存在泄漏问题,进行了失效分析,采用了过程复查、宏观断口分析、金相分析、扫描电镜和化学成分分析等方法。分析结果表明,此钛合金气瓶液压强度泄漏是由于母材区存在Al成分偏析导致的。A failure analysis was conducted for the leakage of a titanium alloy pressure vessel in hydraulic strength test by the methods such as process recheck,macroscopic fracture analysis,metallurgical analysis,scanning electron microscopy( SEM) analysis and chemical composition analysis. The analysis results show that the leakage of this titanium alloy pressure vessel in the hydraulic strength test was caused by Al composition segregation in the base metal.

关 键 词：钛合金 气瓶 失效分析 

分 类 号：TH49[机械工程—机械制造及自动化] TQ050.7[化学工程]