About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advancing the Frontier of Powder Materials Processing and Sintering: A MPMD/EPD Symposium in Honor of Eugene Olevsky
|
| Presentation Title |
Enhancing Surface Properties of Powders for Electron Beam Powder Bed Fusion for Improved Processability and Higher Powder Utilization |
| Author(s) |
Rachel Jennings, Nicholas Southon, Yoshihiko Nagata, Miren Aristizabal Segarra, Jazmina Navarrete Cuadrado |
| On-Site Speaker (Planned) |
Rachel Jennings |
| Abstract Scope |
Low material waste has been touted as a key advantage of Additive Manufacturing (AM) for many years. It is well known within the AM community however, that although powder-based AM technologies generate minimal waste during component fabrication, significant material loss still occurs during powder production. This is particularly prevalent in Electron Beam Powder Bed Fusion (EPBF) where larger powder cuts are employed to prevent smoke phenomena during processing, particularly for lightweight and low conductivity materials. In this work, the characteristics of two different materials -a Ni-base superalloy and a γ-TiAl- susceptible to smoke phenomena are compared. Surface modifications, enhancing conductivity, are achieved for each material via post-processing of powders or adjusting powder atomisation parameters. In optimisation of the powder atomisation parameters, it was found that not only can powder conductivity be improved and smoke susceptibility reduced, but optimal parameters also resulted in an overall cost reduction in the atomisation process. |
| Proceedings Inclusion? |
Planned: |