About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
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Advancing the Frontier of Powder Materials Processing and Sintering: A MPMD/EPD Symposium in Honor of Eugene Olevsky
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| Presentation Title |
Advanced Powder Processing Strategies for Laser Bed-Powder Fusion (LP-PBF): Experimental Analysis. |
| Author(s) |
Ehiremen Kenneth Asemewanlen, Aaron Stebner |
| On-Site Speaker (Planned) |
Ehiremen Kenneth Asemewanlen |
| Abstract Scope |
Introducing ceramic particles as grain refiners in additive manufacturing (AM) presents opportunities for microstructural improvements, but optimal integration techniques remain underexplored. This study investigates three powder processing methods—mechanical mixing, low-energy ball milling, and chemical vapor deposition (CVD)—to introduce yttria and zirconia into pure aluminum feedstock for laser powder bed fusion (L-PBF). Each method is assessed to understand its influence on the process–structure–property relationships in identically printed geometries. SEM analysis reveals adhesion of the ceramic particles to aluminum powder in both mechanical mixing and ball milling. Diffuse reflectance spectroscopy was used to evaluate the laser reflectivity of powders produced via each method. The spatial distribution of ceramic particles within the printed components was characterized using X-ray computed tomography (XCT) and backscattered electron (BSE) imaging. By comparing the outcomes of each technique, this work aims to inform feedstock design strategies for improved part performance in AM. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Aluminum, Ceramics |