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Synthesis, Characterization and Mechanical Properties of Nanocrystalline NiAl

Published online by Cambridge University Press:  10 February 2011

M. S. Choudry ,
J. A. Eastman ,
R. J. DiMelfi  and
M. Dollar
M. S. Choudry
Affiliation:
Department of Mechanical, Materials and Aerospace Engineering, Illinois Institute of Technology, Chicago, IL 60616 Argonne National Laboratory, Argonne, IL 60439
J. A. Eastman
Affiliation:
Argonne National Laboratory, Argonne, IL 60439
R. J. DiMelfi
Affiliation:
Argonne National Laboratory, Argonne, IL 60439
M. Dollar
Affiliation:
Department of Mechanical, Materials and Aerospace Engineering, Illinois Institute of Technology, Chicago, IL 60616
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Abstract

Nanocrystalline NiAl has been produced from pre-cast alloys using an electron beam inert gas condensation system. In-situ compaction was carried out at 100 to 300°C under vacuum conditions. Energy dispersive spectroscopy was used to determine chemical composition and homogeneity. Average grain sizes in the range of 4 to 10 nm were found from TEM dark field analyses. A compression-cage fixture was designed to perform disk bend tests. These tests revealed substantial room temperature ductility in nanocrystalline NiAl, while coarse grained NiAl showed no measurable room temperature ductility.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 457: Symposium V – Nanophase and Nanocomposite Materials II , 1996 , 291
Copyright
Copyright © Materials Research Society 1997

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References

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