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Interaction Between Lattice Dislocations and Grain Boundaries In Ordered Compounds

Published online by Cambridge University Press:  26 February 2011

B.J. Pestman,
J. Th. M. De Hosson,
V. Vitek and
F.W. Schapink
B.J. Pestman
Affiliation:
Department of Applied Physics, Materials Science Centre, University of Groningen, Nijenborgh 18, 9747 AG to Groningen, The Netherlads.
J. Th. M. De Hosson
Affiliation:
Department of Applied Physics, Materials Science Centre, University of Groningen, Nijenborgh 18, 9747 AG to Groningen, The Netherlads.
V. Vitek
Affiliation:
Department of Materials Science & Engineering, University of Pennsylvania, Philadelphia, PA 19104, U.S.A.
F.W. Schapink
Affiliation:
Laboratory of Metallurgy, Delft University of Technology, Rotterdamseweg 137, 2628 AL Delft, The Netherlands
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Abstract

The interaction of 1/2<1 1 0> screw dislocations with symmetric [1 1 0] tilt boundaries was investigated by atomistic simulations using many-body potentials representing ordered compounds. The calculations were performed with and without an applied shear stress. The observations were: absorption into the grain boundary, attraction of a lattice Shockley partial dislocation towards the grain boundary and transmission through the grain boundary under the influence of a shear stress. It was found that the interaction in ordered compounds shows similarities to the interaction in fcc.

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References

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