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8. Diffusion and collective behavior of grain boundaries
Grain boundary diffusivity plays an important role in many properties of polycrystals. Neither the knowledge of average intergranular diffusivity nor that of individual diffusivities attached to certain types of joints can be used to approach the problem of the contribution of a set of joints to the material's behavior. As a first step towards engineering grain boundaries, we need to establish the distribution of diffusivities and the activation energies of intergranular diffusion in polycrystals.
8.1 Diffusion and grain boundary distribution
Several studies are based on the relaxation of extrinsic dislocations, a phenomenon controlled by intergranular diffusion
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Diffusion and collective behavior of grain boundaries
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