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Structural and Chemical Composition of Ni-Al Powders

Published online by Cambridge University Press:  26 February 2011

R. Maurer ,
G. Galinski ,
R. Laag  and
W. A. Kaysser
R. Maurer
Affiliation:
Max-Planck-Institut für Metallforschung, Institut für Werkstoffwissenschaften, Seestraβe 92, 7000 Stuttgart 1, FRG.
G. Galinski
Affiliation:
Max-Planck-Institut für Metallforschung, Institut für Werkstoffwissenschaften, Seestraβe 92, 7000 Stuttgart 1, FRG.
R. Laag
Affiliation:
Max-Planck-Institut für Metallforschung, Institut für Werkstoffwissenschaften, Seestraβe 92, 7000 Stuttgart 1, FRG.
W. A. Kaysser
Affiliation:
Max-Planck-Institut für Metallforschung, Institut für Werkstoffwissenschaften, Seestraβe 92, 7000 Stuttgart 1, FRG.
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Abstract

Ni3Al and NiAl pre-alloyed powders produced by argon gas atomization are investigated by light and transmission electron microscopy concerning their structure, chemical and phase composition. For example, Ni3Al powder consists of a L12 matrix (γ′ -phase) with precipitates whose Al content is 6% higher than in the matrix. Selected single powder particles were isothermally deformed in a modified high resolution dilatometer to investigate the creep behavior. From these experiments HIP parameters are predicted and compared with HIP experiments at different pressures and temperatures. HIP diagrams were calculated according to Ashby's model.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 133: Symposium H – High-Temperature Ordered Intermetallic Alloys III , 1988 , 421
Copyright
Copyright © Materials Research Society 1989

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References

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