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1300 K Compressive Properties of Directionally Solidified Ni-33Al-33Cr-1Mo

Published online by Cambridge University Press:  21 March 2011

J. Daniel Whittenberger ,
S.V. Raj  and
Ivan. E. Locci
J. Daniel Whittenberger
Affiliation:
NASA-Glenn Research Center, Cleveland, OH 44135, John.D.Whittenberger@grc.nasa.gov
S.V. Raj
Affiliation:
NASA-Glenn Research Center, Cleveland, OH 44135, John.D.Whittenberger@grc.nasa.gov
Ivan. E. Locci
Affiliation:
Case Western Reserve University at the NASA-Glenn Research Center, Cleveland, OH 44135
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Abstract

The Ni-33Al-33Cr-1Mo eutectic has been directionally solidified by a modified Bridgeman technique at growth rates ranging from 7.6 to 508 mm/h to produce grain/cellular microstructures containing alternating plates of NiAl and Cr alloyed with Mo. The grains had sharp boundaries for slower growth rates (≤ 12.7 mm/h), while faster growth rates (≥ 25.4 mm/h) lead to cells bounded by intercellular regions. Compressive testing at 1300 K indicated that alloys DS'ed at rates between 25.4 to 254 mm/h possessed the best strengths which exceed that for the as-cast alloy.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 646 , 2000 , N6.9.1
Copyright
Copyright © Materials Research Society 2001

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References

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