About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Materials, Processes and Applications for Energy Industry
|
| Presentation Title |
Influence of Powder and Sheath Materials on Deposition Behavior and Microstructure of Tailored 316L Metal-Cored Wires for WAAM |
| Author(s) |
Alexander Nikitin, Christian Kehm, Evgeniia Ermilova, Alexander Kloshek, Klaus Schricker |
| On-Site Speaker (Planned) |
Alexander Nikitin |
| Abstract Scope |
Metal-cored wires offer new opportunities for improving process stability and part quality in Wire Arc Additive Manufacturing (WAAM). In this study, tailored 316L metal-cored wires were developed using unalloyed and high-alloyed steel sheaths filled with compositionally matched powder blends. Compared to solid wires, these cored wires allow enhanced control over chemical composition, porosity, and mechanical properties. Welding trials were conducted using standard and pulsed arc modes on Fronius power sources. In-process monitoring included infrared thermography for melt pool geometry, high-speed imaging for droplet transfer and arc behavior, and high-frequency current-voltage sampling to evaluate power source response. The influence of powder morphology and chemical composition, along with sheath alloy content, were evaluated in relation to deposition geometry, compositional uniformity, and porosity. Microstructural analysis and porosity quantification were carried out using optical microscopy. The results define key design parameters for next-generation metal-cored wires optimized for high-quality, stable deposition in industrial WAAM applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Iron and Steel |