掺氢环境下X80管线钢气相氢损伤研究

刘天乐, 韦博鑫, 付安庆, 苏航, 陈廷枢, 王超明, 王邃

Hydrogen Damage of X80 Pipeline Steel in Hydrogen-doped Gaseous Atmosphere

LIU Tianle, WEI Boxin, FU Anqing, SU Hang, CHEN Tingshu, WANG Chaoming, WANG Sui

表3 不同温度条件下X80管线钢的气相氢渗透动力学参数

Table 3 Kinetic parameters of gas-phase hydrogen permeation in X80 pipeline steel under different temperature conditions

T / K P / MPa D / m2·s-1 Φ / mol·m-1·s-1·MPa-0.5 ΔHD / kJ·mol-1 ΔHP / kJ·mol-1 298 0.625 1.19 × 10-10 6.43 × 10-11 1.56 11.25 323 0.621 1.23 × 10-10 8.82 × 10-11 348 0.618 1.31 × 10-10 1.12 × 10-10 373 0.625 1.38 × 10-10 1.59 × 10-10