Abstract
The rotation of the grain in polycrystalline metal is caused by crystal slips in each grain. In order to clarify the rotation of a grain surrounded by neighbouring grains, a plane model is introduced in which an anisotropic elliptic inclusion is embedded in an isotropic matrix. Hill's quadratic yield function allowing for orthotropic anisotropy is adopted to express the slip in the inclusion. The deformation and the rotation of the inclusion are analyzed with the rigid-plastic finite element method and discussed based on the calculated results. The inclusion deformed by slip rotates so that the slip direction coincides with the tensile direction. The rotation of the grain is restricted when the shape of grain deviates from the circular shape.
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