Joining of Aluminum Alloy AA7075 and Titanium Alloy Ti-6Al-4V through a Friction Stir Welding-Based Process

Combining dissimilar parts has become imperative for developing the structures based on lightweight materials, such as metal alloys, polymers or polymer matrix composites, and this one of solutions to reverse current trend CO2 emissions in transport sector. However, given usual property disparities, joining materials multi-material multi-purpose raises new engineering challenges. Advanced processes, friction stir welding (FSW), have emerged been applied across several sectors a promising alternative conventional mechanical fastening adhesive bonding. In present work, order avoid development intermetallic compounds (IMCs), different approach from technique was production overlapping joints. These joints were fabricated using high strength aluminum alloy (AA7075-T651) titanium (Ti-6Al-4V), both widely used automotive, aeronautics space industries. To perform systematic investigation, Taguchi method determine process parameter combinations enable fabrication type The subjected quasi-static tensile shear tests assess their performance compared conventionally riveted configurations, namely, single double connection points. produced by FSW showed higher performance. local properties, some fractured regions hardness assessments, revealing no significant change tested areas. Finally, statistical study performed analyze main effects interactions parameters, identify influences