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Role of the Interfaces on the Activation of Slip Systems in The PST TiAl Alloy

Published online by Cambridge University Press:  10 February 2011

Slim Zghal ,
Haruyuki Inui ,
Masaharu Yamaguchi  and
Alain Couret
Slim Zghal
Affiliation:
CEMES-CNRS,29, Rue J. Marvig, BP 4347, 31 055, Toulouse Cedex 4, France.
Haruyuki Inui
Affiliation:
Department of Materials Science and Engineering, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan.
Masaharu Yamaguchi
Affiliation:
Department of Materials Science and Engineering, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan.
Alain Couret
Affiliation:
CEMES-CNRS,29, Rue J. Marvig, BP 4347, 31 055, Toulouse Cedex 4, France.
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Abstract

The operative slip systems in the so-called PST alloy are determined by transmission electron microscopy. Both post-mortem analyses and in situ observations are presented. It is shown that glide of ordinary dislocations and twinning are the most easily deformation modes activated at yield. The role of the interfaces on the activation of these operative slip systems is then examined and discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 552: Symposium KK – High-Temperature Ordered Intermetallic Alloys VIII , 1998 , KK3.3.1
Copyright
Copyright © Materials Research Society 1999

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References

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