30Cr2Ni4MOV钢多道次变形条件下的动态再结晶行为  

Research on the dynamic recrystallization behavior of 30Cr2Ni4MoV LP rotor steel under multi-pass deformation

作　　者：刘鑫[1] 钟约先[1] 马庆贤[1] 袁朝龙[1] 

机构地区：[1]清华大学机械工程系、先进成形制造教育部重点实验室,北京100084

出　　处：《塑性工程学报》2010年第2期115-119,共5页Journal of Plasticity Engineering

基　　金：“十一五”国家科技支撑计划项目(2007BAF02B07,2007BAF02B01);国家自然科学基金资助项目(50705048);教育部博士点基金资助项目(20070003080)

摘　　要：汽轮机低压转子是大型核电机组的关键零部件,其主要用钢为30Cr2Ni4 MoV钢。文章通过高温热力学模拟实验,研究30Cr2Ni4 MoV钢在应变速率0.01s-1,温度1200℃～1150℃、1100℃～1050℃、1000℃～950℃双道次变形条件下的高温变形行为,得到30Cr2Ni4 MoV钢在大型锻造件生产中多道次变形条件下的流动应力曲线,以及动态再结晶的发生条件和组织控制规律。30Cr2Ni4MoV is the commonly used material of low-pressure rotor which is the key component of nuclear power plant. Based on the thermodynamics simulation research of two-pass deformation, which was conducted at strain rate 0. 0ls^-1 and temperature range 1200℃-1150℃, 1100℃-1050℃, and 10000℃-950℃ respectively, the flow stress curves of 30Cr2Ni4MoV under the production condition of heavy forging was obtained. The critical conditions of dynamic recrystallization and the microstructure control were studied.

关 键 词：30CR2NI4MOV钢 低压转子 多道次 动态再结晶 

分 类 号：TG316[金属学及工艺—金属压力加工]