G. Schoeck, THE [100]DISLOCATION IN L1(2) ORDERED ALLOYS, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 241(1-2), 1998, pp. 14-18
The core structure of a [100] dislocation in Ni3Al is studied within t
he framework of the generalized Peierls model. It is shown for a 45 de
grees dislocation that for specific energies of unstable stacking gamm
a(0) less than or equal to 2 J m(-2) the dissociation a[100]double rig
ht arrow a/2[101]+a/2[10 (1) over bar] will not occur and within a rea
sonable range of gamma(0) above 2 J m(-2) never takes place completely
. (C) 1998 Elsevier Science S.A.