| About this Abstract |
| Meeting |
2022 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 II
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| Presentation Title |
Multimodal Characterization of L-PBF 316L Stainless Steel |
| Author(s) |
David Sprouster, M Ouyang, W Cunningham, G Halada, D Olds, A Pattammattel, H Yan, Y Chu, E. Dooryhee, S. Storck, J R Trelewicz |
| On-Site Speaker (Planned) |
J R Trelewicz |
| Abstract Scope |
The hierarchical nature of AM materials necessitates a multiscale approach for quantifying structural features and corresponding chemical heterogeneities that form during rapid solidification. In this work, we describe our recent multimodal characterization efforts as applied to (i) pulsed, (ii) continuous laser deposited 316L, as well as (iii) compositionally tailored 316L. We specifically employ synchrotron-based; X-ray diffraction; scanning nano-X-ray microscopy; X-ray photoemission electron microscopy, in concert with correlative transmission electron microscopy. The combination of these techniques has been crucial in unravelling the role of microstructure across various length scales on performance as functions of printing conditions. The sensitivity of the different techniques highlights their exceptional ability to build a detailed picture of the trends in atomic structure and microstructural properties with printing conditions. Finally, the surface sensitive techniques have shown that passive films contain complex inhomogeneous microstructures that potentially have non-negligible effects on the corrosion performance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Iron and Steel, |