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Precipitation of fine intermetallic particles during conventional thermal aging can significantly enhance the mechanical properties of Al alloys. However, this method offers only limited strengthening in Mg alloys as thermal aging usually leads to intermetallic particles that are too coarse in size and too sparse in spacing. Dynamic precipitation during low-temperature deformation processing offers a chance to rectify this limitation. In addition, mechanical processing often drives precipitation and recrystallization concurrently, therefore, a careful analysis of their interaction and interdependent thermodynamic driving forces is needed. Herein, we investigate dynamic precipitation and recrystallization in a coarse-grained, fully solutionized Mg-9wt.%Al alloy following low-temperature Equal Channel Angular Extrusion (ECAE) using electron microscopy, theoretical calculations, and mechanical property evaluations. Through …