Abstract

An analysis was made of the diffusional creep in polycrystalline materials when subjected to simultaneous action of tensile stress and electric current. Incorporating the contribution of electromigration to atomic diffusion in grain boundaries, the problem of grain boundary diffusion was solved. A simple relationship was derived between diffusional creep rate and local electric field intensity (current density). The results showed that electromigration can enhance the diffusional creep in polycrystalline materials.

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