Strength and hardness of directionally-rolled AA1230 aluminum alloy

There are processes that have been utilized to improve the tensile strength and hardness of aluminum alloys, some of which include elemental and particle additions, since work hardening cannot be used to improve strength and hardness of 1xxx wrought aluminum alloys. This work examines the possibility of introducing secondary processing of transverse rolling after the initial primary rolling to strengthen and hardened wrought aluminum alloy. The effects of transverse and longitudinal rolling on the tensile strength and hardness of AA1230 aluminum alloy worked at ambient temperature (32 °C) have been studied. Samples were rolled in longitudinal and transverse directions from thickness of 1.55 mm to 0.45 mm in 3-7 passes in two-high irreversible mill. The samples rolled in transverse direction have hardness and tensile strength which are superior to samples rolled in the longitudinal direction. The resultant crystals in transverse directions were elongated in the rolling direction and agglomerate into larger crystals in this direction.