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The Role of Dispersoids in Mechanically Alloyed NiAl

Published online by Cambridge University Press:  01 January 1992

S. Dymek ,
M. Dollar ,
S.J. Hwang  and
P. Nash
S. Dymek
Affiliation:
Department of Metallurgical and Materials Engineering, Illinois Institute of Technology, Chicago, Il 60616
M. Dollar
Affiliation:
Department of Metallurgical and Materials Engineering, Illinois Institute of Technology, Chicago, Il 60616
S.J. Hwang
Affiliation:
Department of Metallurgical and Materials Engineering, Illinois Institute of Technology, Chicago, Il 60616
P. Nash
Affiliation:
Department of Metallurgical and Materials Engineering, Illinois Institute of Technology, Chicago, Il 60616
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Abstract

Mechanical alloying followed by hot extrusion has been used to produce fully dense, crack free, very fine grained NiAl-based alloys containing a bimodal distribution of aluminum oxide dispersoids. The unique microstructure provides the materials with high strength and good compressive ductility at ambient and elevated temperatures. The emphasis of the paper is on the importance of the dispersion phase in controlling grain size, texture, deformation mechanisms and ultimately mechanical properties of the mechanically alloyed NiAl-based materials.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 288: Symposium L – High-Temperature Ordered Intermetallic Alloys V , 1992 , 1117
Copyright
Copyright © Materials Research Society 1995

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References

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