  The complex atomic scale structure of high entropy alloys presents new
opportunities to expand the deformation theories of mechanical metallurgy. In
this regard, solute-defect interactions have emerged as critical piece in
elucidating the operation of deformation mechanisms. While notable progress has
been made in understanding solute-defect interactions for random solute
arrangements, recent interest in high entropy alloys with short-range order
adds a new layer of structural complexity for which a cohesive picture has yet
to emerge. To this end, this minireview synthesizes the current understanding
of short-range order effects on defect behavior through an examination of the
key recent literature. This analysis centers on the nanoscale metallurgy of
deformation mechanisms, with the order-induced changes to the relevant defect
energy landscapes serving as a touchstone for discussion. The topics reviewed
include dislocation-mediated strengthening, twinning and phase
transformation-based mechanisms, and vacancy-mediated processes. This
minireview concludes with remarks on current challenges and opportunities for
future efforts.
