X70钢及其焊缝在含Cl-高pH值溶液中电化学噪声行为研究

李鸿瑾, 王歧山, 廖子涵, 孙祥锐, 孙晖, 张新阳, 陈旭

Electrochemical Noise Behavior of X70 Steel and Its Weld in Cl--containing High pH Solution

LI Hongjin, WANG Qishan, LIAO Zihan, SUN Xiangrui, SUN Hui, ZHANG Xinyang, CHEN Xu

表1 X70钢及其焊缝化学成分

Table 1 Chemical compositions of X70 steel substrate and its weld joint (mass fraction / %)

Zone C Si Mn S Si Cr Al V Mo Cu P Ni Fe Metal 0.045 0.24 0.48 0.01 0.004 0.031 0.01 0.005 0.25 0.015 0.017 0.16 Bal. Joint 0.075 0.29 1.31 0．004 0.004 0.045 --- --- 0.03 0.035 0.014 0.016 Bal.