Materials Science

, Volume 48, Issue 5, pp 628–635 | Cite as

Specific kinetic features of nitriding of titanium caused by phase-structural transformations

  • Ya. S. Matychak

We model analytically the high-temperature (T = 1000°С) nitriding of titanium. The role of nitrogen as an α-stabilizer in the formation of a three-layer diffusion zone is analyzed. The problem of nitrogen diffusion in this inhomogeneous medium is solved with regard for the motion of interfaces. We calculate constants of the parabolic growth of layers, which enables us to predict the distribution of nitrogen in the diffusion zone. The evolution (after holding for 1 and 5 h) of the microstructure of a diffusion layer caused by structural-phase transformation during hydrogen diffusion is detected.


diffusion modeling kinetics titanium evolution of microstructure 


  1. 1.
    V. M. Fedirko, I. M. Pohrelyuk, and O. I. Yas’kiv, Thermodiffusion Multicomponent Saturation of Titanium Alloys [in Ukrainian], Naukova Dumka, Kyiv (2009).Google Scholar
  2. 2.
    Ya. S. Matychak, I. M. Pohrelyuk, and V. M. Fedirko, “Thermodiffusion saturation of α-titanium with nitrogen from a rarefied atmosphere,” Fiz.-Khim. Mekh. Mater., 45, No. 1, 66–75 (2009); English translation: Mater. Sci., 45, No. 1, 72–83 (2009).CrossRefGoogle Scholar
  3. 3.
    Ya. S. Matychak, I. M. Pohrelyuk, and V. M. Fedirko, “Kinetic features of the process of nitriding of (α+β)-titanium alloys,” Fiz.-Khim. Mekh. Mater., 46, No. 5, 82–88 (2010); English translation: Mater. Sci., 46, No. 5, 660–668 (2011).CrossRefGoogle Scholar
  4. 4.
    I. M. Pohrelyuk and V. M. Fedirko, “Morphology of nitrated layers in titanium alloys of different structural classes,” Fiz.-Khim. Mekh. Mater., 29, No. 5, 35–41 (1993); English translation: Mater. Sci., 29, No. 5, 467–472 (1993).CrossRefGoogle Scholar
  5. 5.
    I. Katzarov, S. Malinov, and W. Sha, “Finite element modeling of the morphology of β to α phase transformation in Ti–6Al–4V alloy,” Metall. Mater. Trans. A, 33A, 1027–1040 (2002).CrossRefGoogle Scholar
  6. 6.
    Ya. Matychak, V. Fedirko, I. Pohrelyuk, et al., “Modeling of diffusion saturation of (α+β) titanium alloys by nitrogen under rarefied medium,” Defect Diffusion Forum, 277, 33–38 (2008).CrossRefGoogle Scholar
  7. 7.
    V. M. Fedirko and I. M. Pohrelyuk, Nitriding of Titanium and Titanium Alloy [in Ukrainian], Naukova Dumka, Kyiv (1995).Google Scholar
  8. 8.
    E. Fromm and E. Gebhardt, Gase und Kohlenstoff in Metallen, Springer, Berlin (1976).CrossRefGoogle Scholar
  9. 9.
    B. Ya. Lyubov, Diffusion Processes in Inhomogeneous Solid Media [in Russian], Nauka, Moscow (1981).Google Scholar

Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Karpenko Physicomechanical InstituteUkrainian National Academy of SciencesLvivUkraine

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