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Deformation of Polysynthetically Twinned (PST) Crystals of TiAl in Tension and Compression at Room Temperature

Published online by Cambridge University Press:  26 February 2011

H. Inui ,
A. Nakamura  and
M. Yamaguchi
H. Inui
Affiliation:
Kyoto University, Department of Metal Science and Technology, Sakyo-ku, Kyoto 606, Japan
A. Nakamura
Affiliation:
Kyoto University, Department of Metal Science and Technology, Sakyo-ku, Kyoto 606, Japan
M. Yamaguchi
Affiliation:
Kyoto University, Department of Metal Science and Technology, Sakyo-ku, Kyoto 606, Japan
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Abstract

Polysynthetically twinned (PST) crystals of TiAl have been grown and deformed in tension and compression at room temperature. A room temperature tensile elongation of 12.8% which is far larger than any other reported values of room temperature ductility was obtained for a specimen whose tensile axis is inclined at 51° to the lamellar boundaries. Deformation mechanisms of PST crystals of TiAl are discussed on the basis of the results of electron microscope observations of deformation structures.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 213: Symposium Q – High-Temperature Ordered Intermetallic Alloys IV , 1990 , 569
Copyright
Copyright © Materials Research Society 1991

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References

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