摘要
将国产反应堆压力容器(RPV)材料夏比冲击试样及0.5T-CT试样置于高通量工程试验堆中进行中子辐照考验,快中子(E>1 MeV)注量为3.0×10^(19)cm^(-2)。由辐照前后夏比冲击试验得到材料的参考零塑性温度的变化量ΔRT_(NDT)为48℃,由辐照前后转变温度区的断裂韧性试验得到材料的参考温度ΔT_0为53℃,辐照脆化效应比较明显。采用由断裂力学方法得到的RT_(T0)代替RT_(NDT)作为表征材料辐照脆化的参数应用于RPV完整性评估,可以进一步挖掘RPV的安全裕量,提高核电厂的经济性。
The Charpy impact specimen and 0.5T-CT specimen extracted from a certain domestic RPV material are irradiated in HFETR with fast neutron(E>1 Me V)influence of 3.0×10^(19) cm^(-2). In accordance with unirradiated and irradiated Charpy impact test, the measured ΔRT_(NDT) is 48℃, while, according to the fracture toughness test in ductile-brittle transition region, the measured ΔT_0 is 53℃, these actual measurement results demonstrate that the irradiation embrittlement effect is obvious. The RT_(T0) based on the fracture mechanics methodology to be an alternative indexing to RTNDT could further exploit the underlying safety margin of RPV and improve the economy of NPP.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2017年第S1期125-128,共4页
Nuclear Power Engineering
