TP347H锅炉钢管失效机理研究进展  

Research Progress on Failure Mechanisms of TP347H Boiler Steel Tube

作　　者：张骏 郑准备 杨占君 孙兴新 李梦阳 张建伟 ZHANG Jun;ZHENG Zhunbei;YANG Zhanjun;SUN Xingxin;LI Mengyang;ZHANG Jianwei(Northwest Power Technology Research Institute,China Datang Group Science and Technology Research Institute Co.,Ltd.,Xi’an 710021,China)

机构地区：[1]中国大唐集团科学技术研究院有限公司西北电力试验研究院,西安710021

出　　处：《机械工程材料》2021年第2期7-14,共8页Materials For Mechanical Engineering

摘　　要：TP347H奥氏体耐热钢广泛应用于火电机组锅炉受热面管。结合奥氏体耐热钢管服役性能和TP347H钢管爆管失效案例,综述了TP347H钢制受热面管在锅炉服役运行中常见的6种失效机理,包括晶间腐蚀、应力腐蚀开裂、组织老化、氧化腐蚀、原始缺陷和马氏体转变,并介绍了失效特征、分析方法和预防措施。The austenitic heat-resistant steel TP347 H is widely used in heating tubes of thermal power unit boilers.Combining the service performance of austenitic heat-resistant steel tubes and the failure cases of TP347 H steel tube bursts,the six common failure mechanisms,including intergranular corrosion,stress corrosion cracking,microstructure aging,oxidative corrosion,original defects and martensite transformation,of TP347 H steel heating tubes during boiler operation are reviewed.The failure characteristics,analysis methods and preventive measures are described.

关 键 词：火电机组 奥氏体耐热钢 TP347H钢 失效分析 失效机理 

分 类 号：TG142.25[一般工业技术—材料科学与工程]