A parametric study has been carried out to quantify the recrystallised grain size in two commercial non heat treatable alloys, AA 5056 and AA 5083. It is shown that the deformation parameters (including total hot strain and deformation temperature) and the parent microstructures (typically quantified by grain size and constituent particles) have a controlling effect on recrystallised grain size. Grain growth subsequent to recrystallisation has also been studied as a function of time and temperature of annealing. Grain size distributions were also measured and are presented in the form of histograms.
MST/899
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