High Temperature Oxidation of Ti39.4Al10V Alloy

Abstract:

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Alloys of Ti39.4Al10V (at.%) that consisted mainly of ordered β-Ti, γ-TiAl and α2-Ti3Al phases were oxidized at 700, 800, 900, and 1000oC in air. The oxide scales formed consisted largely of an outermost, thin TiO2 layer, an outer, thin Al2O3 layer, and an inner, very thick (TiO2+Al2O3) mixed layer. Vanadium, which was uniformly distributed throughout the oxide scale, harmfully decreased oxidation resistance, and made thick, nonadherent scales owing to the formation of low melting compounds of V-oxides. The oxidation progressed via the outward diffusion of Ti, Al and V ions, and the concurrent inward transport of oxygen.

Info:

Periodical:

Materials Science Forum (Volumes 449-452)

Edited by:

S.-G. Kang and T. Kobayashi

Pages:

813-816

DOI:

10.4028/www.scientific.net/MSF.449-452.813

Citation:

D. B. Lee and Y.D. Jang, "High Temperature Oxidation of Ti39.4Al10V Alloy", Materials Science Forum, Vols. 449-452, pp. 813-816, 2004

Online since:

March 2004

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Price:

$35.00

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