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Changes in Creep Deformation Mechanisms in AlN Particulate Strengthened NiAl

Published online by Cambridge University Press:  01 January 1992

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

AlN particulate strengthened NiAl containing about 10vol% AlN was investigated in stress change experiments above, below, and through a transition stress near 80 MPa. All creep transients were normal, and incubation periods were observed in all stress drops near or below the transition stress. Stress change experiments indicated that the microstructure is very stable, and provided similar values for steady state strain rate as the monotonic tests. Analysis of the stress change data reconfirmed the existence of several deformation mechanisms in this material.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 288: Symposium L – High-Temperature Ordered Intermetallic Alloys V , 1992 , 1149
Copyright
Copyright © Materials Research Society 1995

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References

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