About this Abstract |
| Meeting |
2025 AWS Professional Program
|
| Symposium
|
2025 AWS Professional Program
|
| Presentation Title |
Solidification Behavior and Weldability of Cu-Based Feedstock in Gas Metal Arc Directed Energy Deposition |
| Author(s) |
Joe Kleindienst, Nick Bagshaw, Dan Javernick, Jonah Klemm-Toole |
| On-Site Speaker (Planned) |
Joe Kleindienst |
| Abstract Scope |
Copper-based feedstocks are of interest to the marine as well as aerospace industries for their strength and corrosion resistance as well as excellent electrical and thermal conductivity. Furthermore, gas metal arc directed energy deposition (GMA-DED) is an ideal method to produce large scale structural components for these applications. The weldability of copper-based compositions needs to be studied as these feedstocks continue to see new applications in critical components across multiple industries. In this study, a wide range of copper-based feedstocks including deoxidized copper, silicon bronze, aluminum bronze, nickel bronze, nickel aluminum bronze wires were printed using GMA-DED, and the solidification structure and weldability were evaluated. SigmaJig weldability testing was performed on the off-the-shelf wires and their solidification cracking sensitivity was ranked. The tendency for solidification cracking from the Sigmajig test matched the relative ranking of the Kou crack susceptibility index. The results of this work are expected to provide a deeper understanding of welding metallurgy of copper-based feedstocks to enable a broader application of these materials for structural applications. LA-UR-25-22801 |
| Proceedings Inclusion? |
Undecided |