PPT Slide
Slip occurs most readily in specific directions on certain crystallographic planes.
Generally the slip plane is the plane of greatest atomic density (Table 4-2) and the slip direction is the closest-packed direction within the slip plane.
Since the planes of greatest atomic density are also the most widely spaced planes than for any other set of planes. The slip plane together with the slip direction establishes the slip system (see Figure 11-3b).