Begley-Logsdon关系在核电汽轮机转子材料中的应用  

Begley-Logsdon Relationship Used for Assessing Rotor Steels of Nuclear Steam Turbines

作　　者：梅林波 孙林根 MEI Linbo;SUN Lingen(Shanghai Electric Power Generation Equipment Co.,Ltd.Turbine Plant,Shanghai 200240,China)

机构地区：[1]上海电气电站设备有限公司汽轮机厂,上海200240

出　　处：《热力透平》2020年第4期298-301,共4页Thermal Turbine

摘　　要：断裂韧性是核电汽轮机转子安全性评估的关键参数,Begley-Logsdon关系提出了利用夏比冲击吸收能量估算断裂韧性的经验公式,应用广泛。测试了核电汽轮机焊接转子材料25Cr2Ni2MoV和整锻转子材料30Cr2Ni4MoV的韧脆转变曲线、0.2%屈服强度、断裂韧性等性能,评估Begley-Logsdon关系的适用性。结果表明,用Begley-Logsdon关系进行25Cr2Ni2MoV和30Cr2Ni4MoV断裂韧性的估算,结果略偏保守。应用BegleyLogsdon关系进行核电汽轮机转子飞射物分析是安全可靠的。Fracture toughness is the key parameter for safety assessment of nuclear steam turbine rotor,while Charpy impact energy is used to estimate empirical formula of fracture toughness in Begley-Logsdon relationship.The ductile-brittle transition curve,0.2%yield strength and fracture toughness were tested for 25Cr2Ni2MoV welded rotor steel and 30Cr2Ni4MoV mock-block rotor steel of nuclear steam turbine to evaluate applicability of Begley-Logsdon relationship in two rotor materials.The assessments for 25Cr2Ni2MoV and 30Cr2Ni4MoV rotor steels indicated that the estimated values from Begley-Logsdon relationship were conservative.So,using Begley-Logsdon relationship,it is safe and reliable to analyze turbine missile for nuclear power plant.

关 键 词：核电汽轮机转子 断裂韧性 夏比冲击吸收能量 Begley-Logsdon关系 

分 类 号：TK263.6[动力工程及工程热物理—动力机械及工程]