Figure 4: The effect of SRO on the minimum energy pathway for the core of an edge (a) and screw (b) dislocation motion in the MoTaTiWZr HEA compared to an RSS reference. SRO increases the excess energies for both edge and screw dislocation glide, but the effect is stronger for the edge dislocation, potentially making it less mobile than the screw dislocation.65