Hot mill rolled transfer bar pieces of AA5182 alloy were solutionized at 500 and 400 degreesC to stabilize the Fe content followed by cold rolling. Recrystallization and grain growth studies showed that the heat treatment range can be divided into three: above 400 C, below 300 degreesC and between 400 and 300 degreesC. In the high range, Fe solute mobility was rapid enough to permit solute segregation prior to recrystallization resulting in near-equilibrium solubility conditions whereas in the lowest range the boundary solute mobility was sufficiently low to cause a drag on grain growth. In the middle range, the boundary mobility was high and the lattice mobility low such that recrystallization without initial grain boundary segregation of Fe was found followed by retardation due to accumulation of solute to equilibrium values.