The shear zone of double-notched single crystals, generated by a 20MPa shear stress along the specimen axis ([110] direction) at 773K, was investigated by means of transmission electron microscopy. Dislocation configurations on the (1¯11), (1¯13), (1¯10) and (001) shear planes were compared. The role of the <110>{111} slip systems during shear was assessed. Some indications were found that direct glide of dislocations with a Burgers vector of a/2[110] occurred on the above compact and non-compact planes.

Dislocation Structures on the Plane of Shear in Compressed Double-Notch Copper Single Crystal Specimens. A.Orlova: Materials Science and Engineering A, 1999, 260[1-2], 94-100