Zigzag Dissociation Mode of 〈c + a〉 Dislocations on the Plane in Magnesium Alloys

Figure 1

(a) Slab supercell of slip system of Mg. Orange and green spheres indicate basal type A and type B atoms, respectively. (b) The distributions of charge densities on the 0.4 b positions in the generalized stacking fault energy (GSFE) curves on the planes of Mg-Y alloys. Red (blue) region denotes the area with high (low) charge density. Contour lines are drawn at a constant interval. Note that the GSFE curves are taken from our recent work [15], wherein the stable stacking fault energy is denoted as , which is related to the dissociation of 〈c + a〉 dislocation.

(a)

(b)