Abstract
The effect of niobium on the oxidation of a Ti3Al alloy was studied in pure oxygen in the range of 850-1,100°C. The oxidation products for the Ti-30Al-2.7 Nb alloy were mainly TiO2 (rutile) mixed with A12O3 (alumina) and small amounts of niobium oxide. The oxidation resistance of Ti3Al was improved by the addition of niobium. An in-situ multiple-layer structure comprising a mixture of rutile and alumina formed on the oxide scale of the alloy at temperatures 1,000°C and above. The number of layers increased as the temperature increased but the individual layer thickness decreased.
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References
M. Schmitz-Niederau and M. Schütze,Oxidation of Metals, 52 (1999), pp. 225–240.
J.S. Wu et al.,Intermetallics, 8 (2000), pp. 19–28.
R.G. Reddy, X. Wen, and I. Okafor,Metall. Mater. Trans. A, 32A (2001), pp. 491–495.
T.K. Roy, R. Balasubramaniam, and A. Ghosh,Metall. Trans. A, 27A (1996), pp. 3993–4002.
M.N. Mungole, R. Balasubramaniam, and A. Ghosh,Intermetallics, 8 (2000), pp. 717–720.
K.E. Wiedemann et al.,Oxidation of High Temperature Intermetallics, ed. T. Grobstein and J. Doychak (Warrendale, PA:TMS, 1988), pp. 195–206.
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Reddy, R.G. In-situ multi-layer formation in the oxidation of Ti3Al-Nb. JOM 54, 65–67 (2002). https://doi.org/10.1007/BF02701080
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DOI: https://doi.org/10.1007/BF02701080