核电材料高温高压水缺口疲劳性能研究现状与进展

廖家鹏,吴欣强

Review of Notch Effect on Fatigue Behavior of Materials for LWR Plants in High Temperature High Pressure Water

Jiapeng LIAO,Xinqiang WU

表1 LWR核电站涉及的几何不连续典型部位及其结构材料

Table 1 Typical geometric discontinuities and their construction materials in LWR nuclear power plants

Classification Typical part Construction material Bolt hole Pressure vessel head Stainless steel (SS) Welding discontinuities Pressure vessel, SG tubes, pressurizer, small-diameter pipelines Alloy 690/52 or 152 Primary loop circulation piping system, reactor internals SS/Ni-based alloy Pressure vessel, SG safe-end welds, pressurizer SS/ Ni-based alloy/Low alloy steel Pressure vessel Butt welding of low alloy steel