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Journal of Engineering and Applied Sciences

Anisotropic Effect on Elastic Interaction Between Dislocation and General Grain Boundaries in Some Hexagonal Metals: Be,Y, Zn
M. Toubane and O. Khalfallah

Abstract: In this study, we examine the anisotropic effect on elastic interaction between dislocations and general grain boundaries for hexagonal metals; Be Y and Zn. In the setting of the anisotropic linear elasticity in continuous media the calculations of the elastic interaction energy E have been gotten by Head then to be improved by Barnett and Lothe. The dislocations in elastic interaction with a grain boundary in a bicrystal of an elastically anisotropic material are submitted to an image force Fi = - E/d. The results are represented in isoenergy cards on a stereographic projection. The result showed that the interaction energy is inversely depends to the factor of anisotropy H. The maximal energy of interaction is lower then 14 pJ m 1 its always weaker compared to the case of the cubic metals where it is of the order of 100 pJ m 1. The image force can be attractive repulsive or null. The proportion of attracted dislocations depends to the disorientation and the factor of anisotropy H.

How to cite this article
M. Toubane and O. Khalfallah , 2007. Anisotropic Effect on Elastic Interaction Between Dislocation and General Grain Boundaries in Some Hexagonal Metals: Be,Y, Zn . Journal of Engineering and Applied Sciences, 2: 1777-1781.

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