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Deformation of Bi-PST Crystals of TiAl Produced by Diffusion Bonding

Published online by Cambridge University Press:  10 February 2011

D. Imamura ,
H. Hoshikawa ,
K. Kishida ,
H. Inui  and
M. Yamaguchi
D. Imamura
Affiliation:
Department of Materials Science and Engineering Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
H. Hoshikawa
Affiliation:
Department of Materials Science and Engineering Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
K. Kishida
Affiliation:
Department of Materials Science and Engineering Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
H. Inui
Affiliation:
Department of Materials Science and Engineering Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
M. Yamaguchi
Affiliation:
Department of Materials Science and Engineering Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
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Abstract

Diffusion bonded bi-PST crystals of three different series were prepared and they were deformed in tension at room temperature. Yield stress and elongation exhibited by bi-PST crystals consisting of component crystals with the lamellar microstructure aligned along the tensile axis do not significantly differ from those of component crystals. Plastic strain incompatibility at the interface exerts a strong influence on the deformation behavior of bi-PST crystals when the incompatibility activates additional deformation modes which are much harder than deformation modes operative in each component crystal.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 552: Symposium KK – High-Temperature Ordered Intermetallic Alloys VIII , 1998 , KK3.9.1
Copyright
Copyright © Materials Research Society 1999

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