The damage accumulation in continuously cast Al 6061 due to plastic deformation is investigated for different stress histories. The density variation is related to the damage parameter, where the density is measured using Archimedes' principle. The processes of equal channel angular extrusion and drawing are used to introduce some damage in the specimen for a specified stress history. The amount of plastic deformation is determined by the angle between the two intersecting channels, while the stress ratio is varied by applying different back-pressures.
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