摘要
对2.25Cr-1Mo-0.25V钢加氢筒体锻件的高温持久试验及试样的断口形貌进行检测,检测结果表明,随着应力水平的降低,持久时间明显延长;断口形貌规则、均匀,具有良好的持久塑性。经外推法计算,加氢锻件在482℃时的3×10^4 h持久强度极限值为267.8 MPa。
Through the high temperature endurance testing and detection of the specimen fracture morphology of 2.25Cr-1Mo-0.25V steel hydrogenated shell forgings,the results show that with the decrease of stress level,the endurance time was significantly prolonged;the fracture morphology was regular and uniform,and has a good stress rupture plasticity;Through calculation by extrapolation method,the endurance strength limit of hydrogenated forgings for a duration of 3×10^4 h at the temperature of 482℃is 267.8 MPa.
作者
王天先
Wang Tianxian(Qingdao Lanshi Heavy Machinery Equipment Co.,Ltd.,Qingdao 266426,China)
出处
《压力容器》
北大核心
2019年第10期6-10,共5页
Pressure Vessel Technology
关键词
持久试验
断口形貌
外推法
持久强度极限
endurance testing
fracture morphology
extrapolation
endurance strength limit
