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Extrusion Textures in NiAl and Reaction Milled NiAl/AlN Composites

Published online by Cambridge University Press:  15 February 2011

T. R. Bieler
Affiliation:
Department of Materials Science and Mechanics, Michigan State University, East Lansing, MI 48824
R. D. Noebe
Affiliation:
NASA-Lewis Research Center, Cleveland OH 44135
J. D. Whittenberger
Affiliation:
NASA-Lewis Research Center, Cleveland OH 44135
M. J. Luton
Affiliation:
EXXON Research Center, Annandale, NJ 08801
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Abstract

Extrusion textures in monolithic NiAl and an NiAl/AlN particle composite are compared. The NiAl has a generally increasing grain size with extrusion temperature, and a corresponding transition from <110> to <111> fiber texture. The results suggests that <110> is more closely related to the deformation texture, while the <111> is a recrystallization orientation formed by preferential growth. The composite exhibits <311> fiber texture, and this is consistent with slip in <100> directions. The effect of the AlN particles is to prevent the orientation changes observed in the monolithic NiAl during recrystallization.

Type
Research Article
Copyright
Copyright © Materials Research Society 1992

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