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In-situ multi-layer formation in the oxidation of Ti3Al-Nb

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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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Authors and Affiliations

  1. Department of Metallurgical and Materials Engineering, University of Alabama, P.O. Box 870202, 35487-0202, Tuscaloosa, Alabama

    Ramana G. Reddy (ACIPCO Professor)

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  1. Ramana G. Reddy
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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

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