The motion of grain boundaries during the inward diffusion of Cd was studied. This was the first time that diffusion-induced grain boundary migration had been shown to occur in an hexagonal metal. The progress of grain boundary migration appeared to scale with the driving force that was derived from coherency strain energy. There was evidence for the occurrence of a point defect grain boundary diffusion mechanism in coincidence boundaries. This was not true in more general cases.

L.Liang, A.H.King: Acta Materialia, 1996, 44[7], 2983-98