Etude de la limite elastique d'un alliage durci par precipitation coherente et ordonnee

Plastic Deformation of Al&ndash;Li Single Crystals Containing Al<SUB>3</SUB>Li Particles

“…The stresses necessary for an intermediate stage of the cross slip or the double cross slip were calculated by using eqs. (4), (5), (6), (7) and (9). The results are shown in Table 2.…”

“…Although the calculation of the applied stress as a function of the position of the dislocations in the above situation is very much complicated the applied stress necessary for the configuration just before the accomplishment of the double cross slip of the trailing dislocation is given as (9) and (9) and from the fact that frictional stress are it can be said that when the applied stress is equal to occur, the pair of superlattice dislocations cannot glide on a cross slip plane nor can it glide on a double cross slip plane. Thus, a pair of superlattice dislocations will be locked once the leading dislocation cross slips.…”