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Cyclic oxidation of aluminized Ti-14Al-24Nb alloy

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Abstract

Titanium aluminides are considered as replacements for superalloys in applications in gas turbine engines because of their outstanding properties. Ti3Al has a superior creep strength up to 815° C, but has poor oxidation resistance above 650° C. Two approaches can be followed to improve the oxidation resistance of Ti3Al above 650° C. One is alloying and the other obtaining a protective surface coating. Niobium was found to improve the oxidation resistance, when added as an alloying element. Recent investigations showed that a TiAl3 surface layer considerably improves the oxidation resistance of titanium. In the present work, a TiAl3 layer was obtained on a Ti-14Al-24Nb (wt%) alloy using a pack aluminizing process. The cyclic oxidation behaviour of aluminized and uncoated samples was evaluated.

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References

  1. J. Holwach andT. K. Redden, “Ti/Al Design/Cost Trade-off analysis”, AFAPL-TR-78-74 (General Electric Co., Cincinnati, Ohio, 1978).

    Google Scholar 

  2. H. A. Lipsitt, Titanium aluminides — an overview, in “High temperature ordered intermetallic alloys”, MRS symposia proceedings, edited by C. C. Koch, C. T. Liu and N. S. Stoloff (Materials Research Society Pittsburgh, 1985) pp. 351–64.

  3. N. S. Chowdary, H. C. Graham andJ. W. Hinze, “Oxidation behaviour of Titanium aluminides”, in Proceedings of the Symposium on “Properties of high temperature alloys” (Electrochemical Society Princeton, New Jersey, 1977) pp. 668–80.

    Google Scholar 

  4. M. G. Mendiratta andN. S. Chowdary, “Properties and Microstructure of High Temperature Materials”, Technical Report, AFML-TR-78-112 (Systems Research Laboratories Inc., Dayton, Ohio, 1978) pp. 47–59.

    Google Scholar 

  5. J. Subrahmanyam andJ. Annapurna,Oxid. Metals 26 (1986) 275.

    Google Scholar 

  6. J. Subrahmanyam, Patent applied.

  7. C. A. Barrett andC. E. Lowell,J. Test. Eval. 10(6) (1982) 273.

    Google Scholar 

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Authors and Affiliations

  1. Defence Metallurgical Research Laboratory, 500258, Kanchanbagh, Hyderabad, India

    J. Subrahmanyam

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  1. J. Subrahmanyam
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Subrahmanyam, J. Cyclic oxidation of aluminized Ti-14Al-24Nb alloy. J Mater Sci 23, 1906–1910 (1988). https://doi.org/10.1007/BF01115749

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  • DOI: https://doi.org/10.1007/BF01115749

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