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The European ULTMAT Project: Properties of New Mo- and Nb-Silicide Based Materials

Published online by Cambridge University Press:  01 February 2011

Stefan Drawin
Stefan Drawin*
Affiliation:
drawin@onera.fr, Onera, DMSM, Châtillon, France
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Abstract

The development, in the frame of the European ULTMAT project, of alloys offering at least 150°C surface temperature increase above the Ni-based superalloys' capability is presented. The expected achievement of the project is a thorough evaluation of the capability of refractory metal (Nb and Mo) silicide based multiphase materials to withstand enhanced temperature turbine service conditions (up to 1300°C). This is based on microstructural, mechanical, physical and environmental investigations in close connection with industrial scale material processing and component fabrication technologies. The paper presents an overview of the project results. Base materials are the metal/intermetallic ductile/brittle composites in the Nb-Nb5Si3 and Mo-Si-B systems. Improvements in high temperature creep resistance (up to 1300°C) as well as oxidation resistance (700°C to 1300°C) have been obtained. Processing routes have been developed (ingot and powder metallurgy) that allowed the manufacture of complex shaped parts.

Keywords

castingpowder metallurgystructural
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1128: Symposium U – Advanced Intermetallic-Based Alloys for Extreme Environment and Energy Applications , 2008 , 1128-U07-11
Copyright
Copyright © Materials Research Society 2009

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References

REFERENCES

1. Strategic Research Agenda, Advisory Council For Aeronautics Research in Europe, October 2002 (www.acare4europe.org).Google Scholar
2. Zhao, J.C. and Westbrook, J.H., MRS Bull. 28, 622–627 (2003).Google Scholar
3. Berczik, D.M., US Patents 5, 595, 616 and 5, 693, 156 (1997).Google Scholar
4. Jéhanno, P., Heilmaier, M., Saage, H., Böning, M., Kestler, H., Freudenberger, J. and Drawin, S., Mater.Sci. Eng. A 463, 216–223 (2007).Google Scholar
5. Jéhanno, P., Böning, M., Kestler, H., Heilmaier, M., Saage Krüger, M., Powder Metallurgy 51, 99–102 (2008).Google Scholar
6. Bewlay, B.P., Jackson, M.R. and Lipsitt, H.A., Metall.Mater. Trans. 27A, 3801–3808 (1996).Google Scholar
7. Bewlay, B.P., Jackson, M.R., Zhao, J.C, Subramanian, P.R, Mendiratta, M.G. and Lewandowski, J.J., MRS Bull. 28, 646–653 (2003).Google Scholar
8. Schlesinger, M.E., Okamoto, H, Gokhale, A.B. and Abbaschian, R. J., Phase Equil. 14, 502–509 (1993).Google Scholar
9. Hu, D., Wickins, M., Harding, R.A., Li, Q., Loretto, M.H. and Wu, X, presented at the Aeromat 2008 conference, 23–26 June 2008, Austin, TX, USA (unpublished).Google Scholar
10. Jéhanno, P., Heilmaier, M. and Kestler, H, Intermetallics 12, 1005–1009 (2004).Google Scholar