| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Late News Poster Session
|
| Presentation Title |
A-64: As-Deposited Microstructure and Strain Rate Dependence of Aluminum Alloy 7020 Produced via Additive Friction Stir Deposition |
| Author(s) |
Malcolm Brady Williams, Brian Jordon, Paul Allison |
| On-Site Speaker (Planned) |
Malcolm Brady Williams |
| Abstract Scope |
In this research, the feasibility of using the solid-state additive manufacturing (AM) process, additive friction stir deposition (AFSD), is studied as a suitable technology for creating components using aluminum alloy 7020. Using one set of the acceptable processing conditions, a large fully-dense 65 mm tall build was successful created. Tensile specimens were extracted from the as-deposited component to evaluate the quasi-static (0.001/s) and high-rate (1500/s) tensile strength and to characterize microstructure evolution. The AFSD AA7020 component exhibited a highly refined and equiaxed grain structure as compared to the feedstock material. In the quasi-static regime, the as-deposited AA7020 had a diminished YS and UTS when compared to the T651 feedstock material, however, in the high-rate regime the as-deposited material performed similar to the feedstock material. The present study indicates how AFSD technology can be implemented for the effective deposition of structural AA7020 components without hot-cracking or loss of alloying elements. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, Aluminum, Characterization |