About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Materials, Processes and Applications for Energy Industry
|
| Presentation Title |
Copper–Stainless Steel Functionally Graded Materials Fabricated Using Wire Arc Additive Manufacturing |
| Author(s) |
Chuankai Song, Devyn Duryea, Kyle McGann , Trent LaMont, Sierra Repp, Will Watts, Dave Eames, Tai Adams, Zack Kane, Cole Erhardt, John Isherwood, Zane Strassheim, Mostafa Saber |
| On-Site Speaker (Planned) |
Chuankai Song |
| Abstract Scope |
A primary challenge in the additive manufacturing of dissimilar metals involves controlling atomic diffusion across the interface, which often leads to the formation of brittle intermetallic phases and, in some cases, hot/cold cracking failures. These issues are mainly driven by elemental diffusion along grain boundaries, which compromises the structural integrity of the joint. Copper–Stainless Steel functionally graded materials (FGMs) present unique advantages for applications such as injection molding tools, heat exchangers, nuclear systems, rocket nozzles, etc. This study explored the joining challenges of bimetallic Copper-Stainless Steel FGMs using Wire Arc Additive Manufacturing (WAAM) introducing an interlayer alloy. Gradient materials were fabricated using optimized processing parameters and subsequently characterized through scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), tensile testing, and Vickers hardness measurements. These findings provide critical insights for optimizing dissimilar metal joints in WAAM and facilitating the development of FGMs for widespread applications across various industrial engineering fields. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Joining, Process Technology |