We develop a complex technology of fabrication of oil-and-gas pipes with elevated corrosion resistance, including the procedure of controlled forge-rolling of pipe blanks of 06X1-Y steel with regulated contents of chemical elements and the procedure of heat treatment, namely, hardening with double short-term high tempering at temperatures maximally close to the temperature of the α → γ phase transformation of steel. It is shown that pipes made of this steel have a fine-grained ferrite-pearlitic structure with high (up to 23%) contents of special α –α and α –γ low-energy boundaries and elevated corrosion resistance observed in the course of testing of the specimens in chloride and model chloride-acetate solutions. Moreover, these pipes are less susceptible to hydrogenation under the conditions of cathode polarization in 1 N H₂SO₄ + 1.5 g/liter CS(NH₂)₂ and exhibit higher resistances both to sulfide stress corrosion cracking (SSCC) and to hydrogen-induced cracking than the pipes made of 20 steel. It is shown that the procedure of heat treatment performed according to the developed technology increases the SSCC resistance (σ_gr ≥ 0.85 σ_0.2) and improves the mechanical properties of the pipes up to the strength grade X56 according to the standard of the American Petroleum Institute API 5L.

我们开发了一种复杂的耐腐蚀油气管道制造技术，包括化学元素含量规定的06X1-Y钢管坯的可控锻轧工艺和热处理工艺，即，在最接近钢的 α → γ 相变温度的温度下进行两次短期高温回火淬火。结果表明，用这种钢制成的管道具有细晶粒铁素体-珠光体结构，具有高（高达 23%）的特殊 α-α 和 α-γ 低能边界含量，并且在测试过程中观察到的耐腐蚀性能提高样品在氯化物和模型氯化物 - 乙酸盐溶液中。此外，这些管道在 1 NH 阴极极化条件下不易发生氢化₂ SO ₄ + 1.5 克/升 CS(NH ₂ ) _{2 ，}并且与由 20 钢制成的管道相比，对硫化物应力腐蚀开裂 (SSCC) 和氢致开裂的耐受性更高。结果表明，按照开发技术进行的热处理程序提高了抗SSCC性（σ _gr ≥ 0.85 σ _0.2），并提高了管道的力学性能，达到了美国石油学会标准规定的强度等级X56 API 5L。