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The Creep Deformation and Elevated Temperature Microstructural Stability of a Two-Phase TiAl/Ti3Al Lamellar Alloy.

Published online by Cambridge University Press:  22 February 2011

M. F. Bartholomeusz  and
J. A. Wert
M. F. Bartholomeusz
Affiliation:
Corp. Res. and Develop., Reynolds Metals Company, Richmond, VA 23219
J. A. Wert
Affiliation:
Dept. of Mat. Sci. and Eng., University of Virginia, Charlottesville, VA 22903.
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Abstract

Enhanced work hardening of the phases in the lamellar microstructure has been cited as an explanation for the lower minimum creep rates of a two-phase TiAl/Ti3Al lamellar alloy compared with the minimum creep rates of the individual TiAl and Ti3Al single-phase alloys tested between 980 K and 1130 K. This proposition is confirmed by TEM observations. Thermal and thermomechanical exposure result in the microstructural evolution, which increases the minimum creep rate (εmin) of the lamellar alloy. The effect of microstructural evolution on εmin will be discussed in the present paper.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 364: Symposium L – High-Temperature Ordered Intermetallic Alloys–VI , 1994 , 511
Copyright
Copyright © Materials Research Society 1995

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