Stress enhanced intergranular corrosion of friction stir welded AA2024-T3

•AA2024 FSWed joints are not susceptible to stress corrosion cracking.•More severe corrosion attack after intergranular tests is at the HAZ/TMAZ interface.•Long term corrosion test evidenced a preferential attack in the zone of the nugget.•The intergranular corrosion attack became penetrating in presence of loading.