| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Friction Stir Welding and Processing XIII
|
| Presentation Title |
Effect of Layer Thickness on Resulting Microstructures and Mechanical Properties of Aluminum Alloys Using Additive Friction Stir Deposition |
| Author(s) |
Rachel Swinney, Cole L Ritter, John A Cary, Caleb S Miller, James B Jordon, Paul G Allison |
| On-Site Speaker (Planned) |
Rachel Swinney |
| Abstract Scope |
In this study, the effect of layer thickness on the microstructure and mechanical properties of a multi-layer, non-lubricated Round Feedstock - Additive Friction Stir Deposition (RF-AFSD) build is investigated for the first time. RF-AFSD is a solid-state additive manufacturing process that uses frictional heat and plastic deformation to metallurgically bond deposited layers of material. The build parameters were developed for aluminum alloy 6061 feedstock to examine layer thicknesses of 1 mm and 4 mm, correlating to deposition rates of 0.6 kg/hr and 2.5 kg/hr, respectively. Quasi-static tension tests were performed to determine the material behavior in the longitudinal direction of the nominally 48 mm tall deposits and reveal subsequent layer dependence correlating to coarsening of the ß” strengthening precipitates due to repeated thermal cycles. Additionally, microhardness profiles were created from the cross-sections of each deposit to determine how the thermal cycles affect the resulting materials hardness throughout the layers. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Aluminum, Characterization |