14Cr1MoR钢焊接接头组织及耐蚀性能

乔忠立, 王玲, 史艳华, 杨众魁

Microstructure and Corrosion Resistance of Welded Joint of 14Cr1MoR Steel

QIAO Zhongli, WANG Ling, SHI Yanhua, YANG Zongkui

表1 焊接接头不同区域的阻抗曲线拟合参数

Table 1 Fitting parameters of impedance curves in different regions of welded joints

Sample Rs / Ω·cm2 Qdl / C Qdl-n Rt / Ω·cm2 Qp / C Qp-n Rp / Ω·cm2 Weld 0.877 5.546×10-7 1 5.441 4.77×10-4 0.62 1786 Heat affected zone 0.632 1.374×10-7 0.96 5.981 3.71×10-4 0.66 642.5 Base metal 0.267 4.001×10-6 0.82 6.079 7.156×10-4 0.77 215.1