Editing Plasticity (physics) (section)

====Slip systems====
{{main|Slip (materials science)#Slip systems}}

Crystalline materials contain uniform planes of atoms organized with long-range order. Planes may slip past each other along their close-packed directions, as is shown on the slip systems page. The result is a permanent change of shape within the crystal and plastic deformation. The presence of dislocations increases the likelihood of planes.