About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Advanced Characterization with Synchrotron, Neutron, and In Situ Laboratory-scale Techniques
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Presentation Title |
4D Nanoscale Imaging of Powder Feedstock Processing for Additive Manufacturing |
Author(s) |
Stephen T. Kelly, Kyle Tsaknopoulos, Jordan Kone, Danielle Cote, Hrishi Bale |
On-Site Speaker (Planned) |
Hrishi Bale |
Abstract Scope |
The flexibility of additive manufacturing brings new opportunities for fabricating parts with structures and properties not possible through traditional subtractive processes. In additive manufacturing, each process along the path from powder to part must be optimized to ensure ultimate success. Tailoring the powder microstructure via, e.g. annealing, can change how that powder operates in a manufacturing process. We present here results from examining microstructural changes in a single Al 6061 particle caused by annealing. By leveraging the non-destructive nature of laboratory nanoscale x-ray microscopy, we imaged the internal microstructure of a single (~40 µm) powder particle in 3D at resolutions down to 50 nm. Tomographic analysis of the particle before and after a heat treatment reveals distinct microstructural changes caused by the annealing, including an increase in secondary phase size. We will discuss the implications of this analysis towards powder performance in a cold-spray manufacturing process. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |