Advertisement

Journal of Materials Science

, Volume 29, Issue 3, pp 714–720 | Cite as

Various aspects of the air oxidation behaviour of a Ti6Al4V alloy at temperatures in the range 600–700 °C

  • S. Frangini
  • A. Mignone
  • F. de Riccardis
Papers

Abstract

A study on the air oxidation behaviour of a commercially pure Ti6Al4V alloy between 600 and 700 °C is reported, based on determination of the kinetic curves, microhardness profiles in the metal beneath the scale, and examination of morphology and composition of the scales. The oxidation kinetics shows a gradual transformation dependent on both time and temperature from a diffusive to a nearly linear rate law. It has been observed that such transformation may be associated with the acceleration of oxide scale growth. This phenomenon is accompanied by a parallel change of the oxide morphology, which is essentially manifested with the onset of a duplex-type scale starting from 650 °C. Aluminium is found to pile up near the external surface of the oxide scales, although the presence of a continuous film of alumina may be excluded under any circumstances. Finally, the effect of aluminium and vanadium is beneficial in reducing appreciably the amount of oxygen dissolved in the surface metal layer, compared with unalloyed titanium.

Keywords

Titanium Vanadium External Surface Oxide Scale Metal Layer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    A. Khataee, H. M. Flower and D. R. F. West, J. Mater. Eng. 10 (1988) 37.CrossRefGoogle Scholar
  2. 2.
    P. L. Martin, M. Mendiratta and H. A. Lipsit, Metall. Trans. 14A (1983) 2170.CrossRefGoogle Scholar
  3. 3.
    W. J. S. Yang, ibid 13A (1982) 324.CrossRefGoogle Scholar
  4. 4.
    C. E. Shamben and T. K. Redden, “Science and Technology and Application of Titanium” by R. I. Jaffee and N. E. Promisel eds. (Pergamon, Oxford, 1966) p. 199.Google Scholar
  5. 5.
    D. J. Lainer, E. N. Slesareva, M. J. Tsipin and A. S. Bai, Zashch. Met. (USSR) 2 (1966) 692.Google Scholar
  6. 6.
    V. M. Popova, Z. I. Kornilova and E. M. Lazarev, ibid 10 (1974) 345.Google Scholar
  7. 7.
    I. A. Menzies and K. N. Strafford, in “Proceedings of the 3rd International Congress on Corrosion of Metals”, Vol. 4 (Mir, Moscow, 1968) p. 93.Google Scholar
  8. 8.
    A. M. Chaze, C. Coddet and G. Beranger, J. Less-Common Metals 83 (1982) 49.CrossRefGoogle Scholar
  9. 9.
    A. M. Chaze and C. Coddet, ibid 157 (1990) 55.CrossRefGoogle Scholar
  10. 10.
    B. Champin, L. Graff, M. Armand, G. Beranger and C. Coddet, ibid 69 (1980) 163.CrossRefGoogle Scholar
  11. 11.
    A. M. Chaze and C. Coddet, J. Mater. Sci. 22 (1987) 1206.CrossRefGoogle Scholar
  12. 12.
    G. Welsh and A. I. Kahveci, in “Proceedings of the Workshop on Oxidation of High-Temperature Intermetallics”, Cleveland OH, 22–23 September 1988. T. Grobstein and J. Duychak eds. (The Minerals, Metals and Materials Society, Warrendale, PA, 1989), p. 207.Google Scholar
  13. 13.
    G. H. Meier and D. Apollonia, ibid, T. Grobstein and J. Duychak eds. (The Minerals, Metals and Materials Society, Warrendale, PA, 1989) p. 185.Google Scholar
  14. 14.
    D. David, E. A. Garcia, X. Lucas and G. Beranger, J. Less-Common Metals 65 (1979) 51.CrossRefGoogle Scholar
  15. 15.
    J. P. Pemsler, J. Nucl. Mater. 7 (1962) 16.CrossRefGoogle Scholar
  16. 16.
    A. M. Chaze and C. Coddet, J. Less-Common Metals 124 (1986) 73.CrossRefGoogle Scholar
  17. 17.
    P. Sarrazin and C. Coddet, Corros. Sci. 14 (1974) 83.CrossRefGoogle Scholar
  18. 18.
    A. Andersson and S. L. T. Andersson, in “Solid State Chemistry in Catalysis”, R. K. Grasselli and J. F. Brazdil, eds. (American Chemical Society Symposium Series 279 Washington, DC, 1983) p. 121.Google Scholar
  19. 19.
    H. Kung, in “Transition Metal Oxides: Surface Chemistry and Catalysis”, edited by B. Delmon and J. T. Yates (Elsevier, Amsterdam, 1989) p. 12.Google Scholar
  20. 20.
    A. E. Jenkins, J. Inst. Metals. 82 (1953-54) 213.Google Scholar

Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • S. Frangini
    • 1
  • A. Mignone
    • 1
  • F. de Riccardis
    • 2
  1. 1.Corrosion LaboratoryENEA CRE CasacciaRomeItaly
  2. 2.Division of MaterialsCNRSMBrindisiItaly

Personalised recommendations