| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Refractory Metals 2023
|
| Presentation Title |
J-93: An Additive Manufacturing System for High-resolution Composition Grading Combining Inkjet Deposition with Laser Powder Bed Fusion |
| Author(s) |
Zachery Kutschke, Ryan Penny, Alexander O'Brien, Emre Tekoglu, Ju Li, John Hart |
| On-Site Speaker (Planned) |
Zachery Kutschke |
| Abstract Scope |
Capabilities to combine multiple metal and ceramic materials in single components, and to achieve desired gradients in composition, will advance the performance of future propulsion and energy conversion systems. Multi-material and gradient capabilities have been demonstrated for metals in additive manufacturing (AM) techniques; however, the spatial precision of composition control is limited for several reasons. We present a novel AM system for manufacturing compositionally graded components whereby an inkjet print head creates two-dimensional patterns in between layers of a laser powder bed fusion (LPBF) process. Nanoparticles in the ink combine with the base powder to achieve local in situ alloying. We discuss key design considerations for the system including thermal isolation of the inkjet system, temperature control of the build volume (up to 500C), and atmosphere control. The performance of the system is demonstrated through printing and characterization of gradient refractory composites using a Niobium-based powder as the feedstock. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, High-Temperature Materials, |