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The Temperature Dependence of the Mechanical Properties of Gamma TiAl

Published online by Cambridge University Press:  22 February 2011

B. Viguier ,
J. Bonneville ,
K. J. Hemker  and
J. L. Martin
B. Viguier
Affiliation:
Institut de Génie Atomique, Ecole Polytechnique Fédérate de Lausanne, Switzerland
J. Bonneville
Affiliation:
Institut de Génie Atomique, Ecole Polytechnique Fédérate de Lausanne, Switzerland
K. J. Hemker
Affiliation:
Johns Hopkins University, Dept. of Mechanical Eng., Baltimore, MD, USA.
J. L. Martin
Affiliation:
Institut de Génie Atomique, Ecole Polytechnique Fédérate de Lausanne, Switzerland
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Abstract

Mechanical properties of a polycrystalline single phased γ Ti47Al51Mn2 alloy were studied by compression tests in a wide range of temperature (100 K - 1300 K). We report, in this paper, the temperature dependence of both the flow stress and its strain rate sensitivity. These dependencies show the existence of three temperature domains corresponding to different dislocation motion mechanisms. The temperature dependence of the flow stress strain rate sensitivity is compared with values measured in single crystals1.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 364: Symposium L – High-Temperature Ordered Intermetallic Alloys–VI , 1994 , 629
Copyright
Copyright © Materials Research Society 1995

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References

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