Abstract
The mechanical properties of nanocrystalline titanium of commercial purity were found to be influenced substantially by superimposed ultrasonic vibrations, since by this treatment, dislocation slipping and grain-boundary sliding under plastic deformation are modified. An effective decrease of the grain-boundary strength within the shear band was observed. The impact on the shear banding, on the shear-band morphology, and on its structure was investigated by transmission and scanning electron microscopy.
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