Image Force Effect on the Separation of Partial Dislocations in Bicrystals of Hexagonal Structure Zn-Tl and Zn-Be |
| A. Ayadi and O. Khalfallah
Laboratory of Microstructures and Defects in Materials, Mentouri University, Constantine, Algeria |
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| 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 effect of image force on width of the stacking fault ribbon between two Schockley partials. We show that the separation of two partials dislocations is modified compared to that in the single crystal. It depends on the ratio of shear modulus and the distance between the interface and the dislocation. |
DOI: 10.12693/APhysPolA.123.302 PACS numbers: 61.72.Lk, 61.72.Mm, 61.72.Nn, 62.20.D- |