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.
Similar content being viewed by others
References
A. Khataee, H. M. Flower and D. R. F. West, J. Mater. Eng. 10 (1988) 37.
P. L. Martin, M. Mendiratta and H. A. Lipsit, Metall. Trans. 14A (1983) 2170.
W. J. S. Yang, ibid 13A (1982) 324.
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.
D. J. Lainer, E. N. Slesareva, M. J. Tsipin and A. S. Bai, Zashch. Met. (USSR) 2 (1966) 692.
V. M. Popova, Z. I. Kornilova and E. M. Lazarev, ibid 10 (1974) 345.
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.
A. M. Chaze, C. Coddet and G. Beranger, J. Less-Common Metals 83 (1982) 49.
A. M. Chaze and C. Coddet, ibid 157 (1990) 55.
B. Champin, L. Graff, M. Armand, G. Beranger and C. Coddet, ibid 69 (1980) 163.
A. M. Chaze and C. Coddet, J. Mater. Sci. 22 (1987) 1206.
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.
G. H. Meier and D. Apollonia, ibid, T. Grobstein and J. Duychak eds. (The Minerals, Metals and Materials Society, Warrendale, PA, 1989) p. 185.
D. David, E. A. Garcia, X. Lucas and G. Beranger, J. Less-Common Metals 65 (1979) 51.
J. P. Pemsler, J. Nucl. Mater. 7 (1962) 16.
A. M. Chaze and C. Coddet, J. Less-Common Metals 124 (1986) 73.
P. Sarrazin and C. Coddet, Corros. Sci. 14 (1974) 83.
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.
H. Kung, in “Transition Metal Oxides: Surface Chemistry and Catalysis”, edited by B. Delmon and J. T. Yates (Elsevier, Amsterdam, 1989) p. 12.
A. E. Jenkins, J. Inst. Metals. 82 (1953-54) 213.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Frangini, S., Mignone, A. & de Riccardis, F. Various aspects of the air oxidation behaviour of a Ti6Al4V alloy at temperatures in the range 600–700 °C. Journal of Materials Science 29, 714–720 (1994). https://doi.org/10.1007/BF00445984
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF00445984