Engineering: Dislocation And Deformation Analysis Essay Example

ystal will not yield. 7. 19 List the four major differences between deformation by twinning and deformation by slip relative to mechanism, conditions of occurrence, and final result. ) With slip deformation there is no crystallographic reorientation, whereas with twinning there is a reorientation 2) For slip, the atomic displacements occur in atomic spacing multiples, whereas for twinning, these displacements may be other than by atomic spacing multiples 3) Slip occurs in metals having many slip systems, whereas twinning occurs in metals having relatively few slip systems 4) Normally slip results in relatively large deformations, whereas only small deformations result for twinning. 7. 39 An undefended specimen of some alloy has an average grain diameter of 0. 050 mm.