Real Materials

� The Mixed dislocations is the most general type of unit dislocation and has an arbitrary angle between its line vector and Burgers vector. b is a constant of the dislocation.
� The dislocation line does not need to be straight, and this will change the nature of the local distortion along the dislocation.
� For the case shown, screw character is shown at A, whereas at B the dislocation is edge type.
� At intermediate locations the dislocation has both edge and screw components, their magnitudes depending on the angle between b and t.

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