X80管线钢氢渗透行为及氢脆敏感性研究

陈锴, 杜一帆, 徐浩昀, 吕良, 党桂铭, 王玉金, 郑树启

Hydrogen Permeation and Hydrogen Embrittlement Sensitivity of X80 Pipeline Steel

CHEN Kai, DU Yifan, XU Haoyun, LV Liang, DANG Guiming, WANG Yujin, ZHENG Shuqi

表1 不同厚度X80管线钢的氢渗透动力学参数

Table 1 Kinetics parameters of hydrogen permeation of X80 pipeline steel with different thicknesses

δ / mm I∞ / μA·cm-2 J∞ / 10-10 mol·cm-2·s-1 tb / s tδ / s Deff / 10-6 cm2·s-1 C0 / 10-5 mol·cm-3 Nt / 1020 cm-3 1.0 86.07 8.92 270 546 3.05 2.92 2.4 1.5 56.43 5.85 400 1036 3.62 2.42 1.67 2.0 43.53 4.51 770 1829 3.64 2.48 1.69 2.5 33.53 3.48 1200 2792 3.73 2.33 1.56 3.0 27.15 2.81 2250 4495 3.34 2.53 1.9