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Creep Behavior and Microstructure of XD™ Titanium Aluminide

Published online by Cambridge University Press:  21 February 2011

C. R. Feng ,
H. H. Smith ,
D. J. Michel  and
C. R. Crowe
C. R. Feng
Affiliation:
Materials Science and Technology Division, Naval Research Laboratory, Washington, DC 20375-5000
H. H. Smith
Affiliation:
Materials Science and Technology Division, Naval Research Laboratory, Washington, DC 20375-5000
D. J. Michel
Affiliation:
Materials Science and Technology Division, Naval Research Laboratory, Washington, DC 20375-5000
C. R. Crowe
Affiliation:
Materials Science and Technology Division, Naval Research Laboratory, Washington, DC 20375-5000
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Abstract

The creep behavior of extruded XD™ Ti-47at%Al/7.5v%TiB2 composite was investigated together with extruded Ti-46at%Al alloy. Prior to creep testing, both materials received a duplex heat-treatment at 1200°C for 16h plus 900°C for 8h. The creep tests were conducted at 69, 103 and 138MPa at 760°C in air. The microstructures of both materials prior to and after the creep testing were examined by TEM. The microstructures suggest that the formation of the TiAl/Ti3Al two-phase lamellar structure was the predominant creep mechanism.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 194: Symposium R – Intermetallic Matrix Composites I , 1990 , 219
Copyright
Copyright © Materials Research Society 1990

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References

1. Martin, Marietta Laboratories Report No. TR88-51C, 1988.Google Scholar
2. Feng, C. R., Michel, D. J. and Crowe, C. R., Scripta Metall., 23, 241 (1989).Google Scholar
3. Blackburn, M. J., in The Science. Technology and Application of Titanium, edited by Jaffee, R. T. and Promisel, N. E. (Pergamon Press, London, 1970), p. 633.Google Scholar
4. Feng, C. R., Michel, D. J. and Crowe, C. R., MRS Symp., 133, 669 (1989).Google Scholar
5. Westwood, A. R. C., Metall. Trans. A, 19A, 749 (1989).Google Scholar
6. Martin, P. L., Carter, D. H., Aikin, R. H. Sr., Aikin, R. M. Jr. and Christodoulou, L., in Proc. of the 4th Int. Conf. on Creep and Fracture of Engineering Materials and structures, edited by Wilshire, B. W. and Evans, R. W. (Institute of Metals, London, 1990), p. 265.Google Scholar
7. Feng, C. R., Michel, D. J. and Crowe, C. R., Scripta Metall., 23, 1135 (1989).Google Scholar
8. Feng, C. R., Michel, D. J. and Crowe, C. R., Scripta Metall., 22, 1481 (1988).Google Scholar
9. Feng, C. R., Michel, D. J. and Crowe, C. R., Phil. Hag. L., 61 95 (1990).Google Scholar