CO2 压力对含杂质超临界CO2 输送管线X65钢应力腐蚀开裂敏感性的影响

程璐瑶, 徐彦磊, 李家玮, 孙冲, 林学强, 孙建波

Effect of CO2 Pressure on Stress Corrosion Cracking Susceptibility of X65 Pipeline Steel Used for Transporting Impure Supercritical CO2

CHENG Luyao, XU Yanlei, LI Jiawei, SUN Chong, LIN Xueqiang, SUN Jianbo

表1 慢应变速率拉伸和四点弯应力腐蚀实验条件

Table 1 Test conditions for slow strain rate tensile and four-point-bending stress corrosion

Condition CO2 pressure / MPa Temperature / ºC O2 / % H2S / % NO2 / % SO2 / % H2O / % 1 7.5 50 0.01 0.01 0.01 0.01 0.01 2 10 3 14