基于主曲线方法确定2.25Cr-1Mo钢韧脆转变区的断裂韧度  

Determination of Fracture Toughness of 2.25Cr-1Mo Steel in Transition-Temperature Region Based on Master Curve Method

作　　者：惠虎[1] 王佳欢[1] 王仙河 曹昱澎[1,3] 杨帆[1] 

机构地区：[1]华东理工大学,承压系统安全科学教育部重点实验室,上海200237 [2]博斯特(上海)有限公司,上海201613 [3]上海核工程研究设计院工程设备所,上海200233

出　　处：《机械工程材料》2015年第1期98-101,106,共5页Materials For Mechanical Engineering

基　　金：国家高技术研究发展计划(“863”计划)资助项目(2012AA040105)

摘　　要：针对运行了20万h的加氢反应器接管弯头材料2.25Cr-1Mo钢,测试了其低温拉伸性能、夏比V型缺口冲击功及断裂韧性;在此基础上,得到了其主曲线的参考温度,通过进一步预测得到了该钢在整个韧脆转变区的断裂韧度分布。结果表明:2.25Cr-1Mo钢主曲线的参考温度为-154℃;经过20万h的运行,该钢仍具有充足的韧性;验证了主曲线方法对非核电用2.25Cr-1Mo钢的适用性。The tensile properties,Charpy V-notch impact energy and fracture toughness of 2.25Cr-1Mo steel,which was used in piping elbow of hydrogenation reactor for 200 000 h,were tested at cryogenic temperature.Based on these tests,the master curve reference temperature T0 of the steel was obtained,and the fracture toughness distribution in the whole ductile-brittle transition temperature zones was got.The results show that the master curve reference temperature of 2.25Cr-1Mo steel was-154 ℃,the material of elbow still had good toughness after 200 000 hservice.The applicability of Master Curve method to 2.25Cr-1Mo steel which is not used in nuclear power is validated.

关 键 词：2.25CR-1MO钢 主曲线 韧脆转变区 断裂韧性 

分 类 号：TQ050.4[化学工程]