About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing and Innovative Powder/Wire Processing of Multifunctional Materials
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Presentation Title |
Characterizing Flowability and Printability of Water Atomized Powders for Laser Powder Bed Fusion Additive Manufacturing |
Author(s) |
Sarah Birchall, Junwon Seo, Srujana Yarasi, Bryan Webler, Anthony Rollett |
On-Site Speaker (Planned) |
Sarah Birchall |
Abstract Scope |
This work focuses on the use of water atomized (WA) metal powders as an alternative to gas atomized (GA) powders in laser powder bed fusion (LPBF) additive manufacturing (AM). WA powders are a cost-effective option with high surface oxygen contents, however, GA powders are more spherically shaped making them more commonly used in LPBF AM. This project centers on three WA powders, SS316L, IN600 and IN740H, which were characterized using SEM imaging, a CNN pipeline, and rheological tests. A pre-trained CNN is used to analyze the powder particle images and relate the image features to flow properties that can be connected to powder spreading and printability in LPBF AM. These powders were then printed utilizing LPBF AM and characterized involving topographical optical scanning and cross-sectional analysis for porosity measurements. This talk will include the results of flow tests, the pre-trained CNN pipeline, printed samples, and the analysis of these findings. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Characterization, High-Temperature Materials |