Plastic Deformation

· At the yield point, slip takes place on those crystal planes and in those directions with the highest resolved shear stress.
· The diagram shows the applied tensile stress resolved into a particular slip direction in one of the slip planes of the crystal.

From: Moffatt, Pearsall & Wulff, "The Structure & Properties of Materials," Wiley (1967) and Guy, "Essentials of Materials Science," McGraw Hill (1976)

· Slip planes are normally the closest packed planes, and slip directions are the closest packed crystal directions. The systems for the fcc lattice are shown.