高强铝合金焊接接头力学-电化学腐蚀行为与退化规律研究

胡娜, 彭文山, 郭为民, 刘天楠, 段体岗, 刘少通

Mechanical-electrochemical Corrosion Behavior and Degradation Regularity of High Strength Al-alloy Welded Joints

HU Na, PENG Wenshan, GUO Weimin, LIU Tiannan, DUAN Tigang, LIU Shaotong

表5 不同应力下铝合金焊接接头在低温海水中浸泡不同周期后的断裂数据

Table 5 Fracture data of the welded joint immersed in low-temperature seawater under different conditions of applied stress and immersion time

Immersion time / d Pre- stress Post-fracture elongation (δ) / % Section shrinkage (Ψ) / % 1 25%σs 10.85 11.383 50%σs 10.15 11.041 5 25%σs 10.81 10.564 50%σs 9.24 10.220 15 25%σs 9.87 10.250 50%σs 8.56 9.861