Strain localization and damage development during bending of Al-Mg alloy sheets

► The grain scale strain distribution during bending was studied in AA5754 CC sheets. ► DIC based strain mapping from SEM images of in situ bent samples was applied. ► Tendency for strain localization due to the presence of particle stringers was found. ► Facilitated matrix shearing and decreased local fracture strength were observed. ► Maximum Mises strain of 2.0 was calculated within dominant shear bands.