A Theory of the Formation of Slip Bands In Face-Centred Cubic Crystals

Abstract

A theory of slip band formation in a face-centred cubic crystal was given introducing three concepts, the one was a Frank-Read source multiplying dislocations in successive atomic planes, the second was the co-operative action of Frank-Read sources, the third was the different distribution of dislocations in the vicinity of the free surface than that in the interior of the crystal. By means of the former two, about one thousand dislocations could be multiplied from each source under the critical shear stress of the source without any dynamical effects. The third enables us to illustrate the difference in the surface structures between abraded and unabraded crystals.