Simple predictions were made of the change in crystal orientation during the plastic deformation of body-centered cubic metal crystals with tensile axes on a {110} plane. It was found that 3 alternatives could be distinguished. That is, screw dislocations could slip on {112} planes only, on {110} planes only, or on both types of plane. Analysis of experiments showed that, in α-Fe, the first alternative occurred at room temperature. This was in agreement with a previous result that, at about 100K, the screw-dislocation core configuration transformed from {110} slip-planes to a {112} slip-plane.

Experimental Evidence for the {110} ↔ {112} Transformation of the Screw-Dislocation Cores in Body-Centred Cubic Metals. A.Seeger: Physica Status Solidi A, 2004, 201[4], R21-4