PPT Slide

At some stage (Fig. 13-2b), the shear causing expansion of the loop tends to move the dislocation on the intersecting plane.

Since the dislocation is pure screw at z, it is free to move on this second plane.

In Fig. 11-2d, double cross slip has taken place as the loop glides back onto the original (111) plane.

At some stage (Fig. 13-2b), the shear causing expansion of the loop tends to move the dislocation on the intersecting plane.