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Development of parametric models for monitoring changes in the properties of materials in the process of operation of gas pipelines

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Abstract

Steel failure is closely associated with the aging process, which consists in the diffusion motion of carbon atoms solved in a ferrite matrix to grain boundaries and the release of carbide particles on them. Steel aging is caused by the thermodynamic nonequilibrium of the initial state and the gradual approach to the state of structural equilibrium under conditions of sufficient diffusion mobility of carbon atoms. Aging promotes the initiation and growth of brittle cracks in steel. It is shown that the change in the strength properties of pipe steels in the process of operation calls for the corresponding methods of determining the lifetime of gas pipelines with consideration of the results of diagnostic examinations and the physico-mechanical properties of structural materials used for the construction and repair of gas pipelines.

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Authors and Affiliations

  1. OOO Gazprom Transgas Samara, Samara, 443068, Russia

    V. A. Subbotin

  2. Gubkin Russian State University of Oil and Gas, Moscow, 119991, Russia

    Yu. V. Kolotilov, S. K. Ivashko & V. Yu. Smirnova

Authors
  1. V. A. Subbotin
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  2. Yu. V. Kolotilov
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  3. S. K. Ivashko
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  4. V. Yu. Smirnova
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Corresponding author

Correspondence to Yu. V. Kolotilov.

Additional information

Original Russian Text © V.A. Subbotin, Yu.V. Kolotilov, S.K. Ivashko, V.Yu. Smirnova, 2017, published in Vse Materialy, 2017, No. 3, pp. 18–23.

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Subbotin, V.A., Kolotilov, Y.V., Ivashko, S.K. et al. Development of parametric models for monitoring changes in the properties of materials in the process of operation of gas pipelines. Polym. Sci. Ser. D 10, 247–250 (2017). https://doi.org/10.1134/S1995421217030200

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  • DOI: https://doi.org/10.1134/S1995421217030200

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