Aluminum−air batteries are an up-and-coming alternative for high-energy density storage. However, one of the main drawbacks is the self-corrosion of aluminum alloys in alkaline electrolytes, where the batteries perform best. For that reason, new aluminum alloys resistant to corrosion are required. Severe plastic deformation (SPD) techniques are versatile methodologies that result in metals with an ultrafine microstructure and can be used to prepare new alloys or modify their microstructure. In this study, 99%
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