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Deformation and Fracture Characteristics of a Gamma Titanium Alumtnide at High Temperatures

Published online by Cambridge University Press:  01 January 1992

V. Seetharaman ,
S. L. Semiatin ,
C. M. Lombard  and
N. D. Frey
V. Seetharaman
Affiliation:
UES, Inc.. 4401 Dayton-Xenia Road, Dayton, OH 45432.
S. L. Semiatin
Affiliation:
Wright Laboratory, Wright-Patterson AFB, OH 45433.
C. M. Lombard
Affiliation:
Wright Laboratory, Wright-Patterson AFB, OH 45433.
N. D. Frey
Affiliation:
Battelle Memorial Institute, 505 King Avenue, Columbus, OH 43201.
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Abstract

The hot workability of a γ titanium alumlnlde alloy was investigated using hot tension tests In the temperature range 900-1350°C and for deformation rates varying from 0.0001 to 5 s−1. One series of tests was performed on cast + HIP'ped material and was designed to characterize fracture behavior during primary ingot break-down. Another series of tests was conducted on extruded and heat treated material In order to Investigate the fracture processes occurring during secondary processing. The deformation and fracture characteristics were analyzed to assess the influence of microstructural features as well as the relative volume fractions of the γ and α/α2 phases.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 288: Symposium L – High-Temperature Ordered Intermetallic Alloys V , 1992 , 513
Copyright
Copyright © Materials Research Society 1995

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References

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