Grain boundary kinking in f.c.c. bi-crystals

Abstract
Grain boundaries formed in bi-crystals with a common [001] tilt axis and the (100) planes symmetrically disposed by certain non-coincidence rotations have been observed to kink. This kinking results in the boundary being composed of connected straight segments rather than taking a straight path between the pinned end points. The segments are not randomly oriented with respect to the path of minimum length and can be associated with boundar}’ paths of short periodicity.