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Powder Metallurgy Processing of Ti-48Al-2Nb-2Cr(at%) Alloys

Published online by Cambridge University Press:  01 January 1992

G.E. Fuchs
G.E. Fuchs*
Affiliation:
General Electric Company, P.O. Box 1072, Schenectady, NY 12301-1072
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Abstract

The effect of processing on the microstructures and properties of powder metallurgy processed Ti-48Al-2Nb-2Cr alloys was examined. Both gas atomization (GA) and plasma rotating electrode process (PREP) techniques were used to produce pre-alloyed powder of the desired composition. The powders were then consolidated by either HIPing or extrusion. The effects of HIP temperature (1090°-1300°C) and HIP pressure (103MPa and 172MPa) were examined during HIP consolidation of GA powders. In addition, some of the PREP and GA HIPed materials were subsequently hot worked by isothermal forging. The tensile properties of these materials were determined in air in the temperature range 25°-1000°C. These results were then compared with previous data for I/M materials. The inter-relationship of processing, microstructure and properties was examined.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 288: Symposium L – High-Temperature Ordered Intermetallic Alloys V , 1992 , 847
Copyright
Copyright © Materials Research Society 1995

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References

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