| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Large-scale Metallic Components
|
| Presentation Title |
High Deposition Rate Wire Arc Additive Manufacturing of “Unweldable” Precipitation Hardened Aluminum Alloys |
| Author(s) |
Joe Kleindienst, Alex Yearsley, Nick Bagshaw, Jeff Lints, Jeremy Iten, Xun Liu, Dennis Harwig, Zhenzhen Yu, Jonah Klemm-Toole |
| On-Site Speaker (Planned) |
Joe Kleindienst |
| Abstract Scope |
High deposition rate additive manufacturing such as gas metal arc-based wire arc additive manufacturing (WAAM) is ideally suited to produce large and highly complex shapes. The inherent requirement for low density materials in ground transportation and aerospace applications necessitates high strength aluminum alloys. However, high strength Al alloys in the 2XXX, 6XXX, and 7XXX alloys are considered “unweldable” with arc welding methods. In this presentation, we show that controlling the solidification conditions during WAAM by introducing nucleation sites can eliminate solidification cracking and enable large scale WAAM of precipitation hardened Al alloys for high strength and lightweight components. We discuss processing – microstructure – mechanical property relationships in these WAAM materials and possibilities for mechanical property improvement with heat treatment. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Joining, |