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Creep Behavior and Microstructures of Nb-26Ti-48Al Alloy and Composite

Published online by Cambridge University Press:  15 February 2011

C. R. Feng  and
D. J. Michel
C. R. Feng
Affiliation:
Materials Science and Technology Division Naval Research Laboratory, Washington, DC 20375-5343.
D. J. Michel
Affiliation:
Materials Science and Technology Division Naval Research Laboratory, Washington, DC 20375-5343.
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Abstract

The creep behavior of Nb-26Ti-48Al alloy and its composite were investigated. After creep testing, precipitates were observed in the composite and mobile dislocations were found to be pinned by these precipitates. The combined effects of the reinforcements and the pinned dislocations were responsible for a reduced creep rate of the composite. The possible creep mechanisms were discussed based on the stress exponent and the activation energy of creep.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 350: Symposium U – Intermetallic Matrix Composites III , 1994 , 261
Copyright
Copyright © Materials Research Society 1994

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