| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Friction Stir Welding and Processing XIII
|
| Presentation Title |
Assessing the Effects of Heat Input on Bonding Strength of Lubricant Free Twin Rod Additive Friction Stir Deposition Repair of Aluminum Alloy 7050 |
| Author(s) |
Victor A. Rojas, Brian Jordon, Rachel M Swinney, Paul G. Allison |
| On-Site Speaker (Planned) |
Victor A. Rojas |
| Abstract Scope |
This study investigates the influence of heat input on the bonding quality of an Additive Friction Stir Deposition (AFSD) repair by varying the traverse speed, where slower speeds generated higher heat input and faster speeds lowers it. AA7050-T7651 plates with machined grooves were restored via AFSD without lubricants or tool protrusions. A temperature control scheme was used, and a fixed volumetric extrusion ratio was maintained across both repairs. Bonding effectiveness was assessed through optical micrographs and electron backscatter diffraction to evaluate the microstructure while Vickers hardness measurements characterized the heat affected zone. A coupled quasi static tensile testing with digital image correlation evaluated the mechanical behavior and damage progression of the repairs. High heat input was found to improve ductility due to the enhanced thermal activation and interfacial cohesion. The study highlights the critical role of thermal input in optimizing AFSD repair process parameters for enhanced mechanical performance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Other, Additive Manufacturing, Mechanical Properties |