Comment on “Characteristics of superplasticity domain in the processing map for hot working of an Al alloy 2014-20vol.% Al2O3 metal matrix composite”

New processing maps for hot working of an aluminium alloy were constructed. The apparent activation energy, Q, and the temperature sensitivity parameter, s, were computed, mapped over a given range of processing conditions and used to select the optimum processing conditions. An alternative interpretation of the data was suggested.