Study of the Influence of Crystallographic Texture on 3005 Aluminum Alloy Sheets Bending Abilities

The analysis of the crystallographic texture of the bending surface of 3005 aluminum alloy sheets was carried out in both cold-rolled and annealed states during the process of 180° sheet bending. Textures with the greatest impact on sheet bending abilities were identified using the Pareto diagram. Thestudy shows that annealing of aluminum alloy 3005 sheets with thicknesses of 0.25, 0.46, and 0.82 mm and total strain rates of 92.9, 88.5, and 85.1% results in an almost twofold increase in the component without texture with a similar decrease in the volume fractions of other crystallographic textures. The author proposes a method for quantitative estimation of forging ability depending on the relief of the bending surface. Conditional forging ability points were determined for each type of relief. The maximum possible forging ability score of 10 points was the relief with a smooth surface at the bend, where there were no "orange peel" defects as well as cracks, and the minimum forging ability score of 0 points was the relief with through-cracks all over the bend. It was found that the decrease in thickness of the samples was producing a decrease in the forging ability score. In addition, it was found that heat treatment had a great influence on the forging ability: the forging ability for the samples 0.46 mm and 0.82 mm thick increased three times after annealing, and for the samples 0.25 mm thick, it increased two times.