The equilibrium shape of the blocked twin was determined by calculating the equilibrium positions, of discrete dislocations in the twin, by means of numerical studies. The critical stress which was required in order to place the leading 2 dislocations in a nascent tilt-wall configuration, as well as the fraction of dislocations (with the same sign) which reached and formed a discontinuous tilt wall, were also determined for applied stresses that were greater than the critical stress. The magnitude of the critical stress was found to be low and, under normal deformation conditions, most dislocations in the blocked twin formed a discontinuous tilt wall.

S.V.Kamat, J.P.Hirth, P.Müllner: Philosophical Magazine A, 1996, 73[3], 669-80