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Dislocation Core Structures and Mechanical Behavior of DO22 Type Alloys

Published online by Cambridge University Press:  26 February 2011

M. Khantha ,
V. Vitek  and
D.P. Pope
M. Khantha
Affiliation:
Department of Materials Science & EngineeringUniversity of PennsylvaniaPhiladelphia, PA 19104–6272.
V. Vitek
Affiliation:
Department of Materials Science & EngineeringUniversity of PennsylvaniaPhiladelphia, PA 19104–6272.
D.P. Pope
Affiliation:
Department of Materials Science & EngineeringUniversity of PennsylvaniaPhiladelphia, PA 19104–6272.
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Abstract

We investigate the structures of dislocation cores in a model DO22 type intermetallic alloy in the absence of external stresses. The tetragonal distortion produces sessile configurations of superpartial dislocations even when the energies of planar faults are reasonably low. The influence of the core configurations on the mechanical behavior at low temperatures is discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 213: Symposium Q – High-Temperature Ordered Intermetallic Alloys IV , 1990 , 229
Copyright
Copyright © Materials Research Society 1991

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References

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