Atomistic simulations of a screw dislocation in body-centered cubic Mo were used to determine the dependence upon orientation of the maximum resolved shear stress (in the direction of the Burgers vector) which was required to move the dislocation. A yield criterion was developed which involved a continuum theory of body-centered cubic crystal plasticity and included non-glide components of stress. Its predictions were in excellent agreement with the atomistic simulations.

Complex Macroscopic Plastic Flow Arising from Non-Planar Dislocation Core Structures. J.L.Bassani, K.Ito, V.Vitek: Materials Science and Engineering A, 2001, 319-321, 97-101