About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Ceramic Materials and Processing
|
Presentation Title |
Production of Additive W-Ta Refractory Powders by Mechanical Alloying |
Author(s) |
Paul G. Sanders, Bowen Li, Nick Johnson, Amberlee Haselhuhn |
On-Site Speaker (Planned) |
Paul G. Sanders |
Abstract Scope |
Production of refractory powders for additive manufacturing is challenging as most processes require melting and atomization. In addition, if elemental powders are produced, mixing or alloying of these powders during additive processing is difficult due to the short time at high temperatures processing. Commercial W and Ta powders were used to produce W-Ta alloying powder with attrition milling over a range of milling speeds and times. Particle size, crystal structure, and composition were measured by sieving, XRD and SEM/EDS. During mechanical alloying, the powders were found to be alloyed into a primarily BCC structure with irregular grain shapes. Particle sizes ranged to < 25 µm, with faster milling speeds and longer milling times producing the finest powders. Powders will be assessed for use in additive processes, and scale-up at Michigan Tech will be discussed. |
Proceedings Inclusion? |
Planned: |