OPC油管开裂失效分析  

Failure Analysis on Cracking of OPC Tubing

作　　者：孙涛[1] 欧阳杰[1] 张晓昱[1] 李中伟[1] 柯浩[1] 张伦[2] 袁启民[2] 

机构地区：[1]河北省电力研究院,河北050021 [2]河北马头发电有限责任公司,河北056000

出　　处：《中国特种设备安全》2009年第12期75-77,共3页China Special Equipment Safety

摘　　要：某电厂OPC油管在运行过程中发生泄漏,该油管设计材质为1Cr18Ni9 Ti。通过采用渗透探伤方法寻找具体泄漏部位,并对失效部位进行化学成分分析、金相检验及扫描电镜微区能谱成分分析,得出在Cl-和拉应力的共同作用下引发不锈钢应力腐蚀开裂,是该油管失效的主要原因。The stainless steel OPC oil tube made in 1Cr18Ni9 Ti leaked when it was running.In order to determine the reason of the tube,it was analyzed by means of penetrating testing,chemical composition,metallographic examination and energy spectrum analysis.Based on the analysis,stress corrosion cracking which was caused by Cl- and extensional stress together was the main reason for failure of the oil tube.

关 键 词：1CR18NI9TI 失效 不锈钢 应力腐蚀开裂 

分 类 号：TG172.9[金属学及工艺—金属表面处理] TE973.1[金属学及工艺—金属学]