中温压力容器用钢15CrMoR的热处理工艺  

Heat treatment process of 15CrMoR steel for medium temperature pressure vessel

作　　者：杨雄[1] 李鹏[1] Yang Xiong;Li Peng(Technical Center,Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou Inner Mongolia 014010,China)

机构地区：[1]内蒙古包钢钢联股份有限公司技术中心,内蒙古包头014010

出　　处：《金属热处理》2023年第7期181-186,共6页Heat Treatment of Metals

摘　　要：通过光学显微镜、扫描电镜、拉伸试验机以及冲击试验机对不同热处理工艺下15CrMoR钢板的力学性能、显微组织以及断口形貌进行了分析。结果表明,回火温度680~700℃范围内,15CrMoR钢板的力学性能指标富余量适中,满足标准要求,显微组织为铁素体+珠光体+少量或极少量贝氏体;经680℃保温3~9 h模拟焊后热处理后钢板的常温和300~450℃高温力学性能均可满足标准和用户使用要求。Mechanical properties,microstructure and fracture morphologies of 15CrMoR steel plate under different heat treatment processes were analyzed by means of optical microscope,scanning electron microscope,tensile tester and impact tester.The results show that the mechanical properties of the steel plate tempered at 680-700 ℃ are moderate and meet the requirements,and the microstructure is composed of ferrite+pearlite+small or very small amount of bainite.After simulated post-weld heat treatment process of holding at 680 ℃ for 3-9 h,the normal temperature and 300-450 ℃ high temperature mechanical properties of the 15CrMoR steel plate can meet the standards and user requirements.

关 键 词：压力容器用钢 热处理 回火温度 焊后热处理 高温力学性能 

分 类 号：TG142.1[一般工业技术—材料科学与工程]