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Slip of c + a/2 Dislocations in Ti3Al Single Crystals Strained in Tension Along the C-Axis

Published online by Cambridge University Press:  15 February 2011

Y. Minonishi ,
M. Legros  and
D. Caillard
Y. Minonishi
Affiliation:
Inst. for Materials Research, Tohoku University, Katahira 2–1–1, Aoba-ku, Sendai 980–77, Japan
M. Legros
Affiliation:
CEMES - LOE / CNRS, 29 rue Jeanne Marvig, 31055 Toulouse Cedex, France
D. Caillard
Affiliation:
CEMES - LOE / CNRS, 29 rue Jeanne Marvig, 31055 Toulouse Cedex, France
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Abstract

In situ TEM straining experiments have been performed on a Ti3Al single crystal, along the c-axis, in order to study the slip of 2c+a dislocations in pyramidal planes. The results show that slip takes place in π1 planes, in contrast with what has been observed after compression tests (slip in π2 planes), and that rows of loops are nucleated in the slip plane. The mechanisms which may control slip in the π1 planes are briefly discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 460: Symposium Z – High-Temperature Ordered Intermetallic Alloys VII , 1996 , 237
Copyright
Copyright © Materials Research Society 1997

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References

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