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Microstructure and Properties of Eutectic Composites Based on (Ti, Nb)3 (Al, Si) and (Ti, Nb)5 (Si, Al)3

Published online by Cambridge University Press:  26 February 2011

R. Wagner ,
M. Es-Souni ,
D. Chen ,
B. Dogan ,
J. Seeger  and
P. A. Beaven
R. Wagner
Affiliation:
GKSS-Research Centre GmbH, Institute for Materials Research, 2054 Geesthacht, Federal Republic of Germany
M. Es-Souni
Affiliation:
GKSS-Research Centre GmbH, Institute for Materials Research, 2054 Geesthacht, Federal Republic of Germany
D. Chen
Affiliation:
GKSS-Research Centre GmbH, Institute for Materials Research, 2054 Geesthacht, Federal Republic of Germany
B. Dogan
Affiliation:
GKSS-Research Centre GmbH, Institute for Materials Research, 2054 Geesthacht, Federal Republic of Germany
J. Seeger
Affiliation:
GKSS-Research Centre GmbH, Institute for Materials Research, 2054 Geesthacht, Federal Republic of Germany TU Hamburg-Harburg, 2100 Hamburg 90, Federal Republic of Germany
P. A. Beaven
Affiliation:
GKSS-Research Centre GmbH, Institute for Materials Research, 2054 Geesthacht, Federal Republic of Germany
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Abstract

Previous work has shown that ternary Ti-Al-Si alloys with hypoeutectic and eutectic microstructures containing the intermetallic phases Ti3 (Al,Si) and Ti5 (Si,Al)3 have promising high temperature mechanical properties [1]. In the present investigation alloying additions of Niobium have been made to selected Ti-Al-Si alloys based on hypoeutectic compositions and the effects of Niobium on the microstructure and mechanical properties have been studied. The high temperature creep and oxidation behaviour of such alloys appears to be superior to that of currently available Ti3Al-based alloys.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 213: Symposium Q – High-Temperature Ordered Intermetallic Alloys IV , 1990 , 1007
Copyright
Copyright © Materials Research Society 1991

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References

REFERENCES

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