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Creep Deformation of a Fully Lamellar Gamma Based Titanium Aluminide Alloy

Published online by Cambridge University Press:  15 February 2011

F. Herrouin ,
P. Bowen  and
I. P. Jones
F. Herrouin
Affiliation:
The University of Birmingham, School of Metallurgy and Materials, Edgbaston, Birmingham, B152TT., U.K‥
P. Bowen
Affiliation:
The University of Birmingham, School of Metallurgy and Materials, Edgbaston, Birmingham, B152TT., U.K‥
I. P. Jones
Affiliation:
The University of Birmingham, School of Metallurgy and Materials, Edgbaston, Birmingham, B152TT., U.K‥
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Abstract

A complex two phase γ-TiAl alloy, Ti-47Al-lCr-1Mn-2Ta-0.2Si (at.%) in a fully lamellar condition, has been creep tested at a stress of 200MPa and a temperature of 700°C. This simulates the in-service operating conditions for several potential gas turbine aero engine applications where creep resistance is a design limiting material property. The results have indicate that reduction in lamellae thickness and avoidance of feathery type microstructures contribute to improved creep resistance.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 460: Symposium Z – High-Temperature Ordered Intermetallic Alloys VII , 1996 , 287
Copyright
Copyright © Materials Research Society 1997

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References

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