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.
作者
杨雄
李鹏
Yang Xiong;Li Peng(Technical Center,Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou Inner Mongolia 014010,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2023年第7期181-186,共6页
Heat Treatment of Metals
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
pressure vessel steel
heat treatment
tempering temperature
post-weld heat treatment
high temperature mechanical properties
