Study the Effect of Cold Rolling of Aluminum-Magnesium (5083) Alloys on the Erosion-Corrosion Test at the Impact Angles (30°, 90°) in River Water

The present work investigates the effects of cold rolling on the erosion- corrosion rate of (Al-Mg). The alloys specimens which were used for the marine applications were cold rolled at different reductions (2.5, 5, 7.5%), then tested for erosion- corrosion using dynamic rig at different exposure time (0-15 h). to measure the erosion–corrosion rate at impact angles (30º, 90º) . The results showed that the heat treatment of alloys (5083) didn’t improve the erosion- corrosion resistance; this was noticed in the homogenized specimens. Erosion/corrosion resistance at impact angles (30º, 90º) was found good at two impact angles, While erosion/corrosion resistance for (5083) alloys at impact angle 90º was found higher than impact angle 30º, The specimens of the rolled alloys (2.5, 5, 7.5%) reductions showed erosion/corrosion resistance higher than before and after homogenizations process at both impact angles of (30º 90º) respectively. The percentage error that obtained from experimental and theoretical at impact angles 30º 90° were 25 % and 30% respectively.