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Abstract
In a pure metal, the tegion between two adjacent grains, the grain boundary, is constituted by a transition lattice. The structure of the latter is a result of the crystal deformation of each grain: due to this deformation, the displacement of the atoms tends to re-establish the crystallographic planes the most densely packed. This deformation can be calculated by comparing it to that existing in an infinite planar continuum from which we can deduce an evaluation of the intergranular energy. This method is applicable to various types of joints especially to those involving a tilt boundary of small or large amount of misorientation as well as twist boundaries.
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