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Russian Physics Journal

, Volume 62, Issue 8, pp 1330–1337 | Cite as

Evolution of the Structural-Phase State of a Titanium Alloy of the System Ti–Al–V–Mo During Formation of an Ultrafine-Grained Structure Using Reversible Hydrogenaтion

  • G. P. GrabovetskayaEmail author
  • O. V. Zabudchenko
  • I. P. Mishin
  • E. N. Stepanova
  • I. V. Ratochka
  • O. N. Lykova
Article
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Using methods of electron-microscopy and x-ray structural analysis, we have investigated peculiarities of the evolution of the structural-phase state of an alloy of the system Ti–Al–V–Мо during formation of an ultrafine-grained structure by a method combining hot plastic deformation and reversible hydrogenation. It has been shown that the presence in solid solution of 0.15 wt% hydrogen makes it possible to lower by more than a factor of 2 the magnitude of the plastic deformation needed to obtain an ultrafine-grained state in the alloy. We found that during deformation and subsequent degassing of hydrogen from the alloy, such processes as the phase transformations α′′→β→α and β→α′′ and a redistribution of the doping elements take place, facilitating the formation of a lamellar morphology in the grains and preservation of a high level of strength properties of the ultrafine-grained structure.

Keywords

titanium alloy hydrogen ultrafine-grained structure phase transformation 

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • G. P. Grabovetskaya
    • 1
    Email author
  • O. V. Zabudchenko
    • 1
  • I. P. Mishin
    • 1
  • E. N. Stepanova
    • 2
  • I. V. Ratochka
    • 1
  • O. N. Lykova
    • 1
  1. 1.Institute of Strength Physics and Materials ScienceSiberian Branch of the Russian Academy of SciencesTomskRussia
  2. 2.National Research Tomsk Polytechnic UniversityTomskRussia

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