Effect of friction time on the metallurgical behavior and mechanical properties of similar AA2024 and dissimilar AA2024/TA6V rotary friction welds

• Published in: International journal of advanced manufacturing technology Vol. 133; no. 1-2; pp. 835 - 849
• Main Authors: Lakache, Houssem Eddine, Badji, Riad, May, Abdelghani, Poirot, Nathalie, Gratton, Michel, Aït Hocine, Nourredine
• Format: Journal Article
• Language: English
• Published: London Springer London 01-07-2024; Springer Nature B.V; Springer Verlag
• Subjects: Aluminum base alloys; CAE) and Design; Computer-Aided Engineering (CAD; Engineering; Friction welding; Industrial and Production Engineering; Interdiffusion; Magnesium; Mechanical Engineering; Mechanical properties; Media Management; Original Article; Physics; Tensile strength; Titanium base alloys; Welded joints; Mechanical properties; RFW; TA6V; AA2024; Microstructural analysis
• ISSN: 0268-3768; 1433-3015
• DOI: 10.1007/s00170-024-13755-w

The present work investigates the Rotary Friction Welding (RFW) of similar AA2024 and dissimilar AA2024/TA6V RFW joints. The effect of friction time on the evolution of microstructure and mechanical properties was investigated to determine the optimal friction time. It was found that the increase of friction time from 2 s to 10 s resulted in improved gradually the mechanical properties of both AA2024/AA2024 and AA2024/TA6V RFW joints and shifted the fracture location from the central zone towards the AA2024 material for the AA2024/TA6V RFW dissimilar joint. The highest tensile strength values recorded were 272.54 MPa and 254.47 MPa for the similar AA2024/AA2024 and the dissimilar AA2024/TA6V RFW joints respectively, both were achieved at 10 s friction time. Scanning electron microscopic (SEM) examination and Energy Dispersive X-ray (EDX) analysis indicated the formation of an interdiffusion band at the interface of the dissimilar AA2024/TA6V RFW joint, consisting of Cu, Al, Ti, Mg, and V atoms. Increasing the friction time enhanced the material mixing and led to the alteration of the fracture mode.