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Metal Science and Heat Treatment

, Volume 59, Issue 9–10, pp 545–550 | Cite as

Effect of Carbon and Niobium Content on the Kinetics of Decomposition of Supercooled Austenite in Rolled Metal and Near-Weld Zone of Pipe Steels

  • I. Yu. Utkin
  • K. Yu. Mentyukov
  • I. I. Frantov
  • A. N. Bortsov
STRUCTURAL STEELS
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The effect of the content of carbon and niobium on the kinetics of the phase transformations of austenite and on the mechanical properties of the matrix metal and of the weld-affected zone is studied. The differences in the kinetics of the austenite transformations under post-rolling cooling of sheets and under the heat effect of welding on the matrix metal are shown.

Key words

impact toughness weld-affected zone thermokinetic diagram hardness ultimate strength austenite grains 

References

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    Specifications for Pipes of the Bovanenkovo – Ukhta Gas Delivery Pipeline [in Russian], Standard of the Gazprom Company, Moscow (2008), 26 p.Google Scholar
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    I. A. Permyakov, I. I. Frantov, A. N. Bortsov, and K. Yu. Mentyukov, “Improvement of the weldability and criteria for estimating the reliability of weld-affected zone of high-strength pipe steels,” Metallurg, No. 11, 74 – 81 (2012).Google Scholar
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    A. A. Popov and L. E. Popova, Isothermal and Thermokinetic Diagrams of Decomposition of Supercooled Austenite. Heat-Treater Manual [in Russian], Mashgiz, Sverdlovsk (1961), 430 p.Google Scholar
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    DETNORSKEVERITAS Standard (DNV-OS-F101) for Off-Shore Works, October 2007 [in Russian], 239 p.Google Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • I. Yu. Utkin
    • 1
  • K. Yu. Mentyukov
    • 1
  • I. I. Frantov
    • 1
  • A. N. Bortsov
    • 1
  1. 1.I. P. Bardin Central Research Institute for Ferrous MetallurgyMoscowRussia

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