About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fundamentals of Sustainable Metallurgy and Processing of Materials
|
| Presentation Title |
Solidification Cracking Susceptibility of Recycled Scrap Aluminum for Welding & Additive Manufacturing |
| Author(s) |
Jamie McIntyre, John E. Carsley, Jovid Rakhmonov, Jonah Klemm-Toole |
| On-Site Speaker (Planned) |
Jamie McIntyre |
| Abstract Scope |
Sustainable aluminum production is becoming increasingly desirable to reduce energy consumption and emissions. The “twitch” Al scrap stream contains high amounts of Si, Fe, Cu, Mn, and Mg, which limits its recyclability. However, it is possible that the twitch scrap stream can be recycled into a wire feedstock for arc wire directed energy deposition (AW-DED). Designing an alloy for AW-DED requires an understanding of its solidification cracking response. Modeling has indicated that alloys derived from the twitch scrap stream have a greater cracking resistance than some commercially available alloys, with Cu having the greatest influence over the cracking behavior. In this talk, we show experimental results of microstructure, processing, and mechanical properties of compositions selected from the twitch scrap stream that can be used as a welding or additive manufacturing feedstocks. The results of experiments are compared to model predictions, and paths forward are discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Recycling and Secondary Recovery, Additive Manufacturing |