We study corrosion, hydrogenation, and mechanical properties of 17G1S-U steel in chloride-acetate solutions with hydrogen-sulfide concentrations of 25, 100, 500, and 1500 mg/dm³. For \( {C}_{{\mathrm{H}}_2\mathrm{S}} \) = 25 and 100 mg/dm³, steel corrodes for 720 h with a rate of about 0.5 g/(m²·h). In these solutions, the yield limit and ultimate strength undergo insignificant changes but the relative narrowing undergoes six- and tenfold changes, respectively. Under stresses equal to 0.8σ_0.2, steel does not suffer cracking in a solution with \( {C}_{{\mathrm{H}}_2\mathrm{S}} \) = 100 mg/dm³. It is shown that the corrosion of steel at \( {C}_{{\mathrm{H}}_2\mathrm{S}} \) ≥ 500 mg/dm³ is accompanied by the formation of surface hydrogen-induced cracks, and the degree of hydrogenation is almost twice larger than at lower concentrations. This is a condition required for the development of hydrogen-sulfide corrosion cracking. Static and asymmetric loads on the level of threshold values in the NACE solution intensify the process of hydrogenation of steel in solutions with \( {C}_{{\mathrm{H}}_2\mathrm{S}} \) = 100–1500 mg/dm³, which becomes almost identical \( {C}_{{\mathrm{H}}_{\Sigma}} \) = 12.5–14.8 ppm. By analyzing various trends in the development of steel corrosion in solutions with \( {C}_{{\mathrm{H}}_2\mathrm{S}} \) = 100 and 1500 mg/dm³, we conclude that the fracture of steel in these solutions is affected not only by the degree of hydrogenation of the metal but also by the nature of sulfides formed on the surface and their protective properties.

我们研究了 17G1S-U 钢在硫化氢浓度为 25、100、500 和 1500 mg/dm ^{3 的}氯化物-乙酸盐溶液中的腐蚀、氢化和机械性能。对于\( {C}_{{\mathrm{H}}_2\mathrm{S}} \) = 25 和 100 mg/dm ³，钢以大约 0.5 g/(m ² · H）。在这些解决方案中，屈服极限和极限强度变化不大，但相对变窄分别发生六倍和十倍的变化。在等于 0.8σ _{0.2 的}应力下，钢在\( {C}_{{\mathrm{H}}_2\mathrm{S}} \) = 100 mg/dm ³的溶液中不会开裂。表明钢的腐蚀在\( {C}_{{\mathrm{H}}_2\mathrm{S}} \) ≥ 500 mg/dm ³伴随着表面氢致裂纹的形成，加氢程度几乎大两倍比在较低浓度下。这是发生硫化氢腐蚀开裂所需的条件。NACE 溶液中阈值水平上的静态和非对称载荷加强了溶液中钢的氢化过程，\( {C}_{{\mathrm{H}}_2\mathrm{S}} \) = 100– 1500 mg/dm ³，几乎相同\( {C}_{{\mathrm{H}}_{\Sigma}} \) = 12.5–14.8 ppm。通过用\( {C}_{{\mathrm{H}}_2\mathrm{S}} \)分析钢腐蚀发展的各种趋势= 100 和 1500 mg/dm ³，我们得出结论，这些溶液中钢的断裂不仅受金属氢化程度的影响，还受表面形成的硫化物的性质及其保护性能的影响。