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On the Macroscopic Flow Behavior of the Phases Present in Ti-24Al-llNb

Published online by Cambridge University Press:  26 February 2011

S. J. Giths  and
D. A. Koss
S. J. Giths
Affiliation:
General Electric Company, 1 Neumann Way, M89, Cincinnati, OH 45215
D. A. Koss
Affiliation:
Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802
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Abstract

The deformation behavior of two alloys whose compositions (Ti-25Al-9Nb and Ti-11Al-23Nb in at.%) correspond to alpha-two and beta phases in the Ti-24Al-11Nb alloy has been investigated. Results from both compression and tensile tests over a range of temperatures from 27° to 650°C indicate that the yield stress as well as the strain and strain-rate hardening characteristics of the Ti-24-11 alloy are controlled by the Ti3Al-base alpha-two phase. In contrast to the Alpha-two alloy, the Beta alloy has a flow stress which is very sensitive to temperature and strain rate at 650°C, suggesting the onset of high temperature creep processes.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 133: Symposium H – High-Temperature Ordered Intermetallic Alloys III , 1988 , 323
Copyright
Copyright © Materials Research Society 1989

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References

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