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Microstructure/Property Relations in Ain and Al2O3 Particulate Strengthened NiAl.

Published online by Cambridge University Press:  01 January 1992

M. G. Hebsur ,
J. D. Whittenberger ,
R. M. Dickerson  and
B. J. M. Aikin
M. G. Hebsur
Affiliation:
Sverdrup Technology Inc., Brookpark, OH 44142
J. D. Whittenberger
Affiliation:
NASA-Lewis Research Center, Cleveland, OH 44135,
R. M. Dickerson
Affiliation:
Case Western Reserve University, Cleveland OH 44106
B. J. M. Aikin
Affiliation:
Case Western Reserve University, Cleveland OH 44106
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Abstract

The primary objective of this investigation was to confirm previous results on AIN particulate strengthened NiAI (J. Mater. Res 5, 271(1990)) produced by cryomilling and to determine if cryomilling modified to produce NiAI containing fine Al2O3 particles would also yield a material with equally attractive strength levels. Compression tests conducted on NiAI-AIN at a strain rate of 1.2 × 10−4 s−1 between 300-1300 K and as a function of strain rate at 1300 K indicated that its strength was comparable to previously produced material. While the NiAl-Al2O3 material was stronger than unreinforced NiAI at lower temperatures, at 1300 K it exhibited strength levels commensurate with fine grain sized NiAI. At all test temperatures and strain rates NiAI-AIN exhibited higher strengths compared to either NiAI-AI2O3 or unreinforced NiAI.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 288: Symposium L – High-Temperature Ordered Intermetallic Alloys V , 1992 , 1111
Copyright
Copyright © Materials Research Society 1995

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References

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