On the Influence of Internal and External Factors on the Processes of Corrosion-Mechanical Fracture of High-Strength Low-Alloy Steels

Authors

  • N. N. Sergeev Tula State Lev Tolstoy Pedagogical University, Lenin Prospekt Tula, Russia https://orcid.org/0000-0002-0799-8286
  • A. N. Sergeev Tula State Lev Tolstoy Pedagogical University, Lenin Prospekt Tula, Russia https://orcid.org/0000-0001-9935-2433
  • S. N. Kutepov Tula State Lev Tolstoy Pedagogical University, Lenin Prospekt Tula, Russia
  • A. E. Gvozdev Tula State Lev Tolstoy Pedagogical University, Lenin Prospekt Tula, Russia https://orcid.org/0000-0002-9292-1813
  • A. G. Kolmakov Institution of Russian Aсademy of Sciеnсеs, A. A. Baikov Institute of Меtallurgy and Мaterial Sсiencе RАS, Leninsky Prospekt Moscow, Russia https://orcid.org/0000-0002-4907-951X
  • D. S. Klementyev Tula State Lev Tolstoy Pedagogical University, Lenin Prospekt Tula, Russia

DOI:

https://doi.org/10.37256/nat.222021959

Keywords:

long-term strength, tensile stresses, cathodic polarization, corrosive medium, temperature dependences of internal friction

Abstract

The article studies the influence of internal and external factors on the process of corrosion-mechanical fracture. It is shown that depending on the conditions of hydrogen charging (temperature and chemical composition of the corrosive medium, type of polarization), the mechanical properties of low-alloy steels change dramatically during the initial period of the experiment. With further increase in the holding time in a corrosive medium without polarization, there is no significant change in mechanical properties. It was found that an increase in the level of applied tensile stresses leads to a reduction in the incubation period of microcracks during hydrogen cracking. It was found that the sensitivity of low alloy steels to cracking is largely determined by the relaxation ability of the structure-the relaxation of residual peak micro-stresses localized at the grain boundaries and substructure boundaries reduces the sensitivity to corrosion-mechanical fracture.

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Published

2021-05-25

How to Cite

1.
N. N. Sergeev, A. N. Sergeev, S. N. Kutepov, A. E. Gvozdev, A. G. Kolmakov, D. S. Klementyev. On the Influence of Internal and External Factors on the Processes of Corrosion-Mechanical Fracture of High-Strength Low-Alloy Steels. Nanoarchitectonics [Internet]. 2021 May 25 [cited 2024 Mar. 29];2(2):88-100. Available from: https://ojs.wiserpub.com/index.php/NAT/article/view/959