| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
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| Symposium
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Resisting Degradation from the Environment: A Symposium Honoring Carolyn M. Hansson’s Research and Pioneering Experiences as a Woman in STEM
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| Presentation Title |
The Effect of Microstructural Surface States on the Corrosion of Additively Manufactured 316 Stainless Steel |
| Author(s) |
Nicole R. Tailleart, G. Cheek, Carlos Hangarter, Andrew B. Geltmacher, S. Feng, S. Olig |
| On-Site Speaker (Planned) |
Nicole R. Tailleart |
| Abstract Scope |
Using AM (Powder Bed Fusion) 316 stainless steel, this work seeks to sort out the nuanced differences in surface chemistry, microstructure and/or corrosion electrochemistry changes resulting from refined electropolishing operations by combining minimal material removal with selective localized electrochemistry and chemical surface analyses of the printed microstructures. SEM, EDS, and confocal scanning laser (CSLM)/digital microscope, and cyclic polarization were utilized as the primary characterization methods. SEM investigations indicated that the sample material was unexpectedly contaminated with residual Inconel 718 during the printing process. With increasing depth from the as-printed surface, observed metastable pitting, surface roughness, and passive current all decreased. This process was repeated for uncontaminated AM 316 stainless steel. Other on-going AM corrosion efforts are also introduced, including in-situ XCMT corrosion experiments of AM 316 stainless and full immersion studies of AM samples in a marine environment. |
| Keywords |
Aluminum, |