|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Flexible powder production for additive manufacturing of refractory metals and alloys
||Frauke Hinrichs, Daniel Schliephake, Sascha Seils, Susanne Obert, Alexander Kauffmann, Karin Ratschbacher, Melissa Allen, Martin C. Heilmaier
|On-Site Speaker (Planned)
||Martin C. Heilmaier
Quality and properties of metal powders are essential for powder metallurgy in general and additive manufacturing (AM) in particular. Thus, several atomization technologies were established meeting the multiple needs of different processing technologies. However, production of refractory metal alloy powder remains challenging due to their high liquidus temperatures (> 2000 °C), the formation of brittle intermetallic phases and the reactivity of the constituting elements. In this presentation, powders exemplarily made of Mo-20Si-52.8-Ti (at. pct.) were produced by a novel ultrasonic atomization (UA) process in laboratory scale and compared with an industrial EIGA process. The powders resulting from the two processes were analysed with respect to size distribution, sphericity, microstructure and phase constitution, chemical composition and interstitial impurity content. The properties, quality and quantity of UA perfectly meets the requests for alloy development for powder-based AM while the modified EIGA process allows for upscaling of the amount of alloy powders.
||Additive Manufacturing, Powder Materials, Process Technology