| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Microstructure, Defects, and Properties
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| Presentation Title |
Characterizing Flowability of Water Atomized Powders for Laser Powder Bed Fusion Additive Manufacturing |
| Author(s) |
Sarah Birchall, Srujana Yarasi, Junwon Seo, Anthony Rollett, Bryan Webler |
| 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 a high yield of powders and 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. These powders were then printed utilizing LPBF AM which were compared with GA powder builds. Characterization of the printed samples involved topological 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. |