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Deformation of the Orthorhombic Phase in Ti-Al-Nb Alloys

Published online by Cambridge University Press:  26 February 2011

D. Banerjee ,
R.G. Rowe  and
E.L. Hall
D. Banerjee
Affiliation:
Defence Metallurgical Research Laboratory, Hyderabad-500258, India
R.G. Rowe
Affiliation:
GE Corporate Research and Development, Schenactady, NY-12301
E.L. Hall
Affiliation:
GE Corporate Research and Development, Schenactady, NY-12301
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Abstract

The deformation structure of the alpha-2 and orthorhombic phase in two alloys of the Ti-Al-Nb system has been characterised by transmission electron microscopy after plastic deformation of about 2% in compression at room temperauture. The orthorhombic phase is shown to deform by all slip modes present in the alpha-2 phase. In addition, extensive “c” component slip is observed in the orthorhombic phase on slip planes that are not equivalent to those observed for “c”component slip in alpha-2. Dislocation dissociation on both basal and prismatic planes of dislocations without a c component is observed in both phases.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 213: Symposium Q – High-Temperature Ordered Intermetallic Alloys IV , 1990 , 285
Copyright
Copyright © Materials Research Society 1991

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References

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