Empress Catherine II Saint Petersburg Mining University, Saint Petersburg, Russia

V. I. Bolobov, Dr. Eng., Prof., e-mail: boloboff@mail.ru
G. A. Tigranyan, Postgraduate Student

Ferrologika Ltd., Saint Petersburg, Russia.

V. S. Zhukov, General Director

Tyumen Industrial University, Tyumen, Russia
A. S. Tsvetkov, Cand. Eng., Associate Prof., Research Engineer

Peter the Great Saint Petersburg Polytechnic University, Saint Petersburg, Russia
V. M. Kondratieva, Engineer

Using the STRESSVISION scanner and the magnetic anisotropy method (MAM), stresses remaining in a thin (up to 0.5 mm) surface layer of plates made of 08ps, 20 and 17GS pipe steels after their electrolytic hydrogenation in a stressed state in a 5 % H2SO4 solution with the addition of 1.5 g/l CS(NH₂)₂, as in the process simulating the incubation stage of stress corrosion of main gas pipelines were determined. It was found that the effect of hydrogen on the plates of all analyzed steels has the same effect as their stretching under three-point bending and uniaxial tension, i.e. leads to an increase in the MAM signal. This allowed to conclude that hydrogenation is accompanied by the appearance of tensile stresses in the metal, the value of which (up to 50 MPa) is close to that described in the literature (from 40 to 70 MPa). According to metallographic studies, the cause of the above stresses was changes in the structure of the surface layer of steels. Based on the results of magnetic anisotropic measurements and metallographic analysis carried out on a fragment of a pipe measuring 63×5 mm made of 35G2F steel with defects after operation characteristic of stress corrosion, it was established that the structure of the metal in areas of the outer surface of the fragment characterized by reduced values of residual compressive stresses is distinguished by an increased proportion of the light component - ferrite, as well as a decrease in microhardness (from ~ 350 to ~ 320 HV), which corresponds to the process of decarburization of ferrite-pearlite steel during stress corrosion. A conclusion was made on the possibility of using MAM to record stresses arising in the surface layers of pipe steels as a result of hydrogenation, and, as a consequence, to develop a conclusion on the changes that occurred in the structure of the pipe material as a result of stress corrosion.

1. Litvinenko V. S. et al. Barriers to the implementation of hydrogen initiatives in the context of sustainable development of global energy. Zapiski gornogo instituta. 2020. Vol. 244. pp. 428–438. DOI: 10.31897/pmi.2020.4.5
2. Forecast of the development of energy in the world and Russia 2019. Edited by A. A. Makarov, T. A. Mitrova, V. A. Kulagin. Moscow : The Energy Research Institute of the RAS – Moscow School of Management SKOLKOVO, 2019. 210 p.
3. IEA: World Energy Balances 2020: Overview – July 2020. Available at: World_Energy_Balances_Overview_2020_edition.pdf (accessed: 20.04.2023).
4. Rudko V. A., Gabdulkhakov R. R., Pyagay I. N. Scientific and technical baseline of the possibility of organizing the needle coke production in Russia. Zapiski gornogo instituta. 2023. Vol. 263. pp. 795–809.
5. Shammazov I. A., Batyrov A. M., Sidorkin D. I., Van Nguyen T. Study of the effect of cutting arozen soils on the supports of above-ground trunk pipelines. Appl. Sci. 2023. Vol. 13. 3139. DOI: 10.3390/app13053139
6. Fetisov V., Davardoost H., Mogylevets V. Technological aspects of methane–hydrogen mixture transportation through operating gas pipelines considering industrial and fire safety. Fire. 2023. Vol. 6. 409. DOI: 10.3390/fire6100409
7. Pyagay I. N., Svakhina Y. A., Titova M. E. et al. Effect of hydrogel molar composition on the synthesis of LTA-type zeolites in the utilization of technogenic silica gel. Silicon. 2024. Vol. 16. pp. 4811–4819. DOI: 10.1007/s12633-024-03053-1
8. Beloglazov I. I., Morenov V. A., Leusheva E. L., Gudmestad O. T. Modeling of heavy-oil flow with regard to their rheological properties. Energies. 2021. Vol. 14, No. 2. pp. 1–15. DOI: 10.3390/en14020359
9. Vasiliev G. G., Dzhalyabov A. A., Leonovich I. A. Analysis of the causes of deformations of engineering structures of gas complex facilities in the cryolithozone. Zapiski gornogo instituta. 2021. Vol. 249. pp. 377–385. DOI: 10.31897/PMI.2021.3.6
10. Popov G., Bolobov V., Zhuikov I., Zlotin V. Development of the kinetic equation of the groove corrosion process for predicting the residual life of oil-field pipelines. Energies. 2023. Vol. 16. 7067. DOI: 10.3390/en16207067
11. Kantyukov R. R., Zapevalov D. N., Vagapov R. K. Analysis of the use and impact of carbon dioxide environments on the corrosion state of oil and gas facilities. Zapiski gornogo instituta. 2021. Vol. 250. pp. 578–586. DOI: 10.31897/PMI.2021.4.11
12. Shishlyannikov D., Zverev V., Ivanchenko A., Zvonarev I. Increasing the time between failures of electric submersible pumps for oil production with high content of mechanical impurities. Applied Sciences. 2022. Vol. 12. 64. DOI: 10.3390/app12010064
13. Kantor O. G., Nurdauletov B. R., Kuzeev I. R. Comparative analysis of methods for eliminating stress corrosion cracking in gas pipelines. Azimuth of scientific research: economics and administration. 2019. Vol. 28, Iss. 8. pp. 278–281.
14. Kim D. H. Hydrogen embrittlement micromechanisms and direct observations of hydrogen transportation by dislocations during deformation in a carbon-doped medium entropy alloy. Journal of Materials Research and Technology. 2022. Vol. 20. pp. 18–25.
15. Qin G., Cheng Y. F. A review on defect assessment of pipelines: Principles, numerical solutions, and applications. International Journal of Pressure Vessels and Piping. 2021. Vol. 191. 104329.
16. Wasim M., Djukic M. B. External corrosion of oil and gas pipelines: A review of failure mechanisms and predictive preventions. Journal of Natural Gas Science and Engineering. 2022. Vol. 100. 104467.
17. Bai Yong., Bai Qiang. Subsea structural engineering handbook. Gulf Professional Pub, 2011. 956 p.
18. IOGP Report. Risk assessment data directory: Riser & Pipeline Release Frequencies. London, 2019. 62 р.
19. Abubakar S. A., Mori S., Sumner J. A review of factors affecting SCC initiation and propagation in pipeline carbon steels. Metals. 2022. Vol. 12, Iss. 8. 1397.
20. Bogdanov R. I. Features of manifestation of stress corrosion cracking of main gas pipelines in the territory of the Russian Federation. Nauchno-tekhnicheskiy sbornik – Vesti gazovoy nauki. 2016. No. 3 (27). pp. 12–22.
21. Ryakhovskikh I. V. Evaluation of sizes of stress-corrosion defects in technical diagnostics of gas pipelines. Nauchno-tekhnicheskiy sbornik – Vesti gazovoy nauki. 2020. No. 2 (44). pp. 4–14.
22. Silvestrov S. A., Gumerov A. K. Incubation period of development of stress corrosion cracking on main pipelines. Stroitelstvo i ekspluatatsiya neftegazoprovodov, baz i khranilishch. 2018. No. 3 (113). pp. 95–113.
23. Gareev A. G., Nasibullina O. A., Rizvanov R. G. Study of corrosion cracking of main gas and oil pipelines. Neftegazovoe delo. 2012. No. 6. pp. 126–146.
24. Pogulyaev S. I., Maksyutin I. V., Popkov A. S. The influence of uneven distribution of residual and operational stresses in pipes on the occurrence of stress corrosion cracking defects. Nauchno-tekhnicheskiy sbornik – Vesti gazovoy nauki. 2022. No. 1 (50). pp. 120–132.
25. Ovchinnikov I. I. Study of the behavior of shell structures operated in environments causing stress corrosion cracking. Naukovedenie. 2012. No. 4. pp. 1–30.
26. Gareev A. G., Nasyrova G. I. Forecasting and diagnostics of corrosion cracking of main pipelines. Edited by L. A. Markeshin. Ufa : USOTU, 1995. 69 p.
27. Ryakhovskikh I. V. Safe operation of gas pipelines based on the stress corrosion cracking control model. Nauchno-tekhnicheskiy sbornik – Vesti gazovoy nauki. 2022. No. 1 (50). pp. 17–30.
28. Silvestrov S. A., Gumerov K. M. Changes in mechanical properties of pipe metal in hydrogencontaining environments. Welding. Renovation. Tribotechnics: abstracts of reports of the VIII Ural scientific and practical conference. Nizhny Tagil : Nizhny Tagil Intsitute of Technology (branch) UrFU, 2017. pp. 85–90.
29. Lisin Yu. V. et al. Research of changes in the properties of pipeline metal during operation: generalization of results and promising developments of the Ufa scientific school. Nauka i tekhnologii truboprovodnogo transporta nefti i nefteproduktov. 2017. No. 2 (7). pp. 22–30.
30. Khizhnyakov V. I. et al. Prevention of development of corrosion and stress-corrosion defects and cathodically protected surface of main pipelines. Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitelnogo universiteta. 2021. pp. 140–148.
31. Khizhnyakov V. I., Zhendarev P. A. Ensuring operational reliability of main gas and oil pipelines during long-term operation. Gorny informatsionno-analiticheskiy byulleten (nauchno-technicheskiy zhurnal). 2013. No. S4–1. pp. 374–378.
32. Merson E. D. et al. Effect of current density of electrolytic hydrogenation on the concentration of diffusion-mobile hydrogen in low-carbon steel. Vektor nauki Tolyattinskogo gosudarstvennogo universiteta. 2015. Vol. 34, No. 4. pp. 76–82.
33. Merson E. D., Poluyanov V. A. Stages of fish-eye crack growth under uniaxial tension of lowcarbon steel saturated with hydrogen. Collection of scientific papers of the XVI International scientific and technical Ural school-seminar of metallurgists-young scientists. Yekaterinburg, 2015. pp. 343–346.
34. Zhukov S. V., Zhukov V. S. Gear measuring mechanical stresses in metal articles. Patent RF, No. 2079825. Applied: 30.09.1994. Published: 20.05.1997.
35. Zhukov S. V., Zhukov V. S., Kopitsa N. N. Method of determination of mechanical stresses and device for realization of this method. Patent RF, No. 2195636. Applied: 05.03.2001. Published: 27.12.2002.
36. Zhang T. et al. Study of correlation between hydrogen-induced stress and hydrogen embrittlement. Materials Science and Engineering: A. 2003. Vol. 347. pp. 291–299.
37. Glikman L. A., Snezhkova T. N. On the occurrence of residual stresses during electrolytic saturation of the steel surface with hydrogen. Zhurnal tekhnicheskoy fiziki. 1952. No. 7 (22). pp. 1104–1108.
38. Pyshmintsev I. Yu. Preliminary assessment of the possibility of using large-diameter pipes made of X52 steel for transporting pure gaseous hydrogen under pressure. Izvestiya vuzov. Chernaya metallurgiya. 2023. No. 66 (1). pp. 35–42. DOI: 10.17073/0368-0797-2023-1-35-42
39. Petkova A. P., Zlotin V. A. Analysis of the efficiency of reducing hydrogen losses in a pipeline made of various austenitic stainless steels. Chernye Metally. 2024. No. 9. pp. 50–54.
40. Sultanbekov R. R., Nazarova M. N., Terekhin R. D. Stress-stain state of a vertical steel tank affected by bottom sediments in conditions of extreme temperature differences. Advances in Raw Material Industries for Sustainable Development Goals. London : CRC Press, 2021. pp. 314–321.
41. Pryakhin E. I., Mikhailov A. V., Sivenkov A. V. Technological features of surface alloying of metal products with Cr-Ni complexes in the medium of low-melting metal melts. Chernye Metally. 2023. No. 2. pp. 58–65.
42. Vologzhanina S. A., Ermakov S. B., Khuznakhmetov R. M. Relationship between operating conditions and the emergence of nano- and ultradispersed grain boundary defects in weld joints. Tsvetnye Metally. 2023. No. 8. pp. 80–85.
43. Sivenkov A. V. , Konchus D. A., Gareev D. V., Pryakhin E. I. Application of Cr – Ni coatings by chemical-thermal treatment from low-melting metal solutions. Chernye Metally. 2024. No. 12, рр. 101–106.