Dislocation Movement across GBs
- As dislocations move through polycrystalline materials,
they have to move through grains of different orientations, which requires
higher amounts of energy, if the grains are not in the preferred orientation.
- As they travel between grains they must be emitted across
the grain boundary, usually by one half of a partial dislocation, and then
annihilated by the second half at a time slightly after the first one.
