磷化处理对核主泵螺栓断裂行为的影响

赵东杨, 周宇, 王冬颖, 那铎

Effect of Phosphating on Hydrogen Embrittlement of SA-540 B23 Steel for Nuclear Reactor Coolant Pump Bolt

ZHAO Dongyang, ZHOU Yu, WANG Dongying, NA Duo

表1 B23材料化学成分

Table 1 Chemical composition of B23 steel (mass fraction / %)

Material C Si Mn S P Cr Ni Mo Fe Domestic 0.38 0.24 0.68 0.003 0.012 1.07 0.02 0.21 Bal. ASME 0.37~0.44 0.15~0.35 0.15~0.35 0.025 0.025 0.65~0.95 1.55~2 0.2~0.3 Bal.