| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
A Career in Powder Processing and Additive Manufacturing: A MPMD Symposium Honoring David Bourell
|
| Presentation Title |
Dual Concentric Ring Atomization Gas Die to Improve Gas Atomization Efficiency for SFF/AM Metal Powder Feedstocks |
| Author(s) |
Iver E. Anderson, Franz Hernandez, Tim Prost, David Byrd, Trevor Riedemann, Jordan Tiarks |
| On-Site Speaker (Planned) |
Iver E. Anderson |
| Abstract Scope |
Rapid prototyping or solid freeform fabrication (SFF), developed and championed by David Bourell for three decades, is now “additive manufacturing” (AM) and is a rapidly expanding powder-based processing method that is used for many critical applications. Limits on this expansion currently include powder feedstock cost (within narrow size limits), quality (shape/flowability, impurities), and availability (particularly for specialty and refractory alloys). Thus, powder-making advancements are needed for greater yield efficiency, minimized off-size powder, and reduced materials consumption and system maintenance. Building from precision and efficiency gains with close-coupled gas atomization dies, compressible flow modeling helped develop a dual co-axial gas jet array design to increase interior supersonic gas jet coherency length. Atomization results will be reported using the dual gas jet array with a maximum gas to metal ratio (GMR) of 4.1, targeting yield enhancements for L-PBF feedstock powders (15-45 µm). Funded by USDOE-EERE-TCF/AMMTO through Ames National Lab (contract no. DE-AC02-07CH11358). |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Powder Materials, Process Technology |