STUDY OF THE MICROSTRUCTURE AND CORROSION BEHAVIOR OF AA5052-H32 ALLOY WELDED BY FRICTION STIR WELDING (FSW) TO DUAL-PHASE STEEL

• Grant number: 24/00191-5
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: March 01, 2024
• End date: December 31, 2025
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Physical Metallurgy
• Principal Investigator: Isolda Costa
• Grantee: Giovanni Brandi Cirillo Iazigi
• Host Institution: Instituto de Pesquisas Energéticas e Nucleares (IPEN). Secretaria de Desenvolvimento Econômico (São Paulo - Estado). São Paulo , SP, Brazil

Abstract

This work plan accosts the relevance of aluminum alloy AA5052 and dual-phase steel DP600 in the automotive industry due to their physical and mechanical properties. The challenge of conventional welding of aluminum alloys is highlighted due to the formation of oxide layers, hydrogen solubility, and high thermal conductivity. The Friction Stir Welding (FSW) process presented as an effective alternative, allowing the union of aluminum alloys with different materials.The research purpose is to investigate the corrosion resistance of welded 5052-H32 aluminum alloy with dual-phase steel DP600 using the FSW method. The methodology includes microstructure characterization, evaluation of galvanic coupling, and monitoring corrosion development using electrochemical techniques.The importance of this research for the automotive industry, highlighting the substitution of steel plates for aluminum plates, resulting in a significant contribution to reduce weight and costs, also became more sustainable, making vehicles more efficient.