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Materials Science

, Volume 46, Issue 5, pp 660–668 | Cite as

Kinetic features of the process of nitriding of (α + β) -titanium alloys

  • Ya. S. Matychak
  • I. M. Pohrelyuk
  • V. M. Fedirko
Article

The kinetic features of nitriding of (α + β) -titanium alloys caused by their phase-structural state and the surface phenomena are investigated both analytically and experimentally. The influence of the temperature and time parameters of treatment on the depth of the nitrided layer is analyzed. It is shown that, as the β-phase content of alloys increases, the degree of saturation of their surface zone with nitrogen decreases. This is caused by its lower solubility in the β-phase than in the α-phase, more intense diffusion into the bulk of the specimen, and the formation of a deeper hardened zone.

Keywords

diffusion kinetics surface phenomena nitriding (α + β) -titanium alloys. 

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Copyright information

© Springer Science+Business Media, Inc. 2011

Authors and Affiliations

  • Ya. S. Matychak
    • 1
  • I. M. Pohrelyuk
    • 1
  • V. M. Fedirko
    • 1
  1. 1.Karpenko Physicomechanical InstituteUkrainian National Academy of SciencesLvivUkraine

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