Effect of microstructure on corrosion-mechanical endurance of welded joints of aluminium alloy V1341T produced by manual argon-arc welding

Abstract

The results of microstructure effect on corrosion-mechanical endurance of 1.2 mm thick alloy of Al-Mg-Si-Cu alloying system and its welded joints, depending on their condition due to different types of HT are presented. Change of microstructure of the welded joints during performance of various HT operations practically does not affect its resistance against intergranular and exfoliating corrosion. Effect of HT on corrosion-mechanical endurance of welded joint under the conditions of simultaneous action of continuous loading and corrosive environment is ambiguous. Resistance against intergranular corrosion and corrosion cracking will determine the fracture resistance of welded products of V1341T alloy in service.

Keywords

• aluminum alloy of al-mg-si-su system
• welded joint
• internular corrosion
• exfoliating corrosion
• corrosion cracking
• corrosion-mechanical tests
• potentiometry