Abstract
We study the elastic interaction between a pair of partial dislocations, resulting from the dissociation of a perfect dislocation, and a bimetallic interface. The forces that act on two partials dislocations are the forces due to elastic interaction between the partial and image forces due to interactions of partial dislocations with interface. We are interested in the e ect of image force on width of the stacking fault ribbon between two Schockley partials. We show that the separation of two partials dislocations is modi ed compared to that in the single crystal. It depends on the ratio of shear modulus and the distance between the interface and the dislocation.
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