Real Materials

� For the Screw dislocation, the Burgers vector and the Line vector are parallel.
� A straight screw dislocation creates a helical configuration for the planes normal to the dislocation line. The position of atoms in the core region is also illustrated.
� The screw dislocation can slip (glide) on those planes of the crystal that contain both b and t. The slip plane of a screw dislocation is, therefore, less well defined than that of an edge dislocation.
� The plane indicated in red is just one of the possible slip planes.

From: Callister, "Materials Science and Engineering," Wiley (1997)