About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Alloys: Development and Manufacturing
|
| Presentation Title |
Understanding the thermophysical properties of dissimilar al6061/al7075 metal joints made with Additive Friction Stir Deposition |
| Author(s) |
Caleb Noble Quantson, Kekeli Agbewomu, Edem Honu, Congyuan Zeng, Patrick Mensah |
| On-Site Speaker (Planned) |
Caleb Noble Quantson |
| Abstract Scope |
Abstract:
This study investigates the thermophysical behavior of dissimilar Al6061 and Al7075 joints fabricated using Additive Friction Stir Deposition (AFSD), a solid-state additive manufacturing process. These lightweight alloys are widely used in aerospace and automotive applications, but mismatched thermophysical properties can challenge joint integrity and thermal management. Al6061 and Al7075 substrates were joined using AFSD under controlled parameters, with material flow, interface bonding, and thermal cycles characterized. Thermophysical properties, including thermal conductivity, specific heat capacity, and thermal diffusivity, were evaluated up to 250°C using laser flash analysis. Results showed a slight decrease in thermal diffusivity after T6 heat treatment due to microstructural homogenization, a consistent increase in specific heat capacity with temperature that converged after aging, and an increase in thermal conductivity post-heat treatment due to reduced defects and precipitate redistribution. These findings demonstrate AFSD’s effectiveness in producing dissimilar aluminum structures with tailored thermal properties for advanced applications. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Additive Manufacturing, Aluminum, Joining |