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Evaluation of Multicomponent Nickel Base LI2 and Other Intermetallic Alloys as High Temperature Structural Materials

Published online by Cambridge University Press:  28 February 2011

D. M. Shah  and
D. N. Duhl
D. M. Shah
Affiliation:
Materials Engineering and Research Laboratory Pratt & Whitney 400 Main Street, East Hartford,CT 06108
D. N. Duhl
Affiliation:
Materials Engineering and Research Laboratory Pratt & Whitney 400 Main Street, East Hartford,CT 06108
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Abstract

Multicomponent nickel base intermetallics with the L12 structure were evaluated as high temperature structural materials. The compounds were based on the γ' composition of PWA 1480, a high strength single crystal nickel base superalloy. The best balance of properties in the compound was achieved with <111> oriented single crystals but no significant advantage could be demonstrated over the precipitation hardened superalloys. Insufficient impact resistance was a major deficiency of the L12 compounds. Other nickel base intermetallics were also evaluated but showed little advantage over superalloys.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 81: Symposium H – High-Temperature Ordered Intermetallic Alloys II , 1986 , 411
Copyright
Copyright © Materials Research Society 1987

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References

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