Zinc bicrystals with originally flat <10•0> 89° symmetric tilt boundary tilted at ∼45° to the tensile direction were strained at high temperature. The operation of crystallographic slip in both grains was suppressed by orientation of basal planes parallel and perpendicular to the tensile action of curvature driving force making its inclination angle close to 70° with respect to the lateral free surface. In the case of annealing with no load applied, a small boundary migration was observed at the edges of the sample. Initiation of grain-boundary sliding significantly increased the amount of boundary migration. It was established that sliding could increase the reduced boundary mobility by more than an order of magnitude.

Stimulation of Capillarity-Driven Grain Boundary Migration During Sliding. A.D.Sheikh-Ali, A.A.Mirzakhojaev: Journal of Materials Science, 2008, 43[11], 3855-9

axis. The boundary migrated under the