Effect of Friction Stir Welding Process Parameters and Post-Weld Heat Treatment on the Corrosion Behaviour of AA6061-O Aluminum Alloys

Eldeeb, Mostafa; Khorshed, Lobna; Abdallah, Sayed; Gaafer, Ahmed; Mahmoud, Tamer

doi:10.21608/ejchem.2019.7946.1624

Effect of Friction Stir Welding Process Parameters and Post-Weld Heat Treatment on the Corrosion Behaviour of AA6061-O Aluminum Alloys

Document Type : Original Article

Authors

¹ Department of Manufacturing Engineering and Production Technology, Modern Academy for Engineering and Technology, Cairo Egypt.

² Physical Chemistry Department, National Research Centre, Dokki, Cairo, Egypt.

³ Mechanical Engineering Department, Faculty of Engineering - Shoubra, Benha University, Cairo, Egypt

10.21608/ejchem.2019.7946.1624

Abstract

The aim of the present work is to study the effect of rotation and welding speeds as well as the T4 and T6 post-weld heat treatments (PWHT) on the corrosion behavior of AA6061-O aluminum plates joined using friction stir welding (FSW). The corrosion properties of welded joints were studied by Potentiodynamic polarization and Immersion tests. The results showed that both T4 and T6 PWHT improves the corrosion resistance of stirred zones compared to base alloy. However, joints of T4 showed lower corrosion resistance compared to T6. Increasing welding speed or reducing rotation speed increased the corrosion resistance of joints.

Keywords

Main Subjects