采用电化学渗氢和硫化物应力腐蚀开裂实验方法,研究了G105钢的钻杆、方钻杆、转换接头的渗氢性能,以及在应力渗氢环境下的断裂行为。结果表明,不同构件G105材料的渗氢电流和氢的渗透通量有明显区别。随充氢电流增大,试样的渗氢电流和氢的渗透通量增大。在不同应力条件下,3种部件的渗氢实验表明,其断裂时间随应力的增大而缩短。 Hydrogen permeation performance of drill pipe, square drill pipe and adapter of G105 steel and fracture behavior under stress hydrogenation were studied by electrochemical hydrogen permeation and sulfide stress corrosion cracking. The results show that there are obvious differences between hydrogen permeation flux and hydrogen permeation flux of G105 materials. With the hydrogen charging current increases, the sample hydrogen permeation current and hydrogen permeation flux increased. Under different stress conditions, the hydrogen permeation experiments of three kinds of components showed that the rupture time shortened with the increase of stress.