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The Effects of Substitutional Additions on Tensile Behavior of Nb-Silicide Based Composites

Published online by Cambridge University Press:  26 February 2011

Laurent Cretegny ,
Bernard P. Bewlay ,
Ann M. Ritter  and
Melvin R. Jackson
Laurent Cretegny
Affiliation:
GE Global Research, Schenectady, NY 12301, USA.
Bernard P. Bewlay
Affiliation:
GE Global Research, Schenectady, NY 12301, USA.
Ann M. Ritter
Affiliation:
GE Global Research, Schenectady, NY 12301, USA.
Melvin R. Jackson
Affiliation:
GE Global Research, Schenectady, NY 12301, USA.
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Abstract

Nb-silicide based in-situ composites consist of a ductile Nb-based solid solution with high-strength silicides, and they show excellent promise for aircraft engine applications. The Nb-silicide controls the high-temperature tensile behavior of the composite, and the Nb solid solution controls the low and intermediate temperature capability. The aim of the present study was to understand the effects of substitutional elements on the room temperature tensile behavior and identify the principal microstructural features contributing to strengthening mechanisms.

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References

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