| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Powder Flowability of Elemental Niobium, C103, and Other Structural Materials for Powder Bed Fusion |
| Author(s) |
Dina Wael Samir Khattab, Xiaoling Shen, Jake Kim, Ching-Chien Chen, Paul Mort, Jeffrey Youngblood, Michael S. Titus |
| On-Site Speaker (Planned) |
Michael S. Titus |
| Abstract Scope |
Adequate powder flowability in laser powder bed fusion is critical important because it enables even spreading of 40-80µm-thick layers of powder in a homogeneous manner. This aids in reducing defects during the melting and solidification process and overall improves component performance. In this talk we will elucidate the influence of surface chemistry and powder morphology on flowability and spreadability using several metrics measured from traditional methods like the Hall flow test and tap density, but also from newer and novel methods such as modified orifice flow, GranuDrum, powder rheometer, and miniaturized powder bed test. To validate interpretation of these experiments, we also present discrete element method (DEM) results that systematically vary powder cohesion and morphology to investigate flowability. While most of this presentation will focus on elemental niobium and Nb-based C103 alloy, other structural materials will be presented including Ni alloy 625, and stainless steel 17-4 PH. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Powder Materials |