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Meeting MS&T22: Materials Science & Technology
Symposium Resisting Degradation from the Environment: A Symposium Honoring Carolyn M. Hansson’s Research and Pioneering Experiences as a Woman in STEM
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.
Proceedings Inclusion? Undecided
Keywords Aluminum,

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Characterization of Internal Oxidation in Alloy 690 and Model Ni Alloys
Correlating Crack Tip pH to Environment Assisted Cracking Performance in Al Alloys
Corrosion and Biocompatibility of 316L Stainless Steels Fabricated by Selective Laser Melting
Corrosion and Environmentally Assisted Cracking (EAC) Evaluation of Additively Manufactured (AM) High Strength Precipitation Hardened Steel (UNS S17400)
Corrosion of Fe-Cr-Mn Stainless Steel in Supercritical Water
Evaluating the Sensitivities of SCC Susceptibility in Stainless-steel Nuclear Waste Storage Containers
Galvanic Corrosion of Active and Passive Steel Bars with Different Area Ratios
Investigation of Crack Initiation in Hydrogen Embrittled Ni-base Alloy 725
Liquid Metal Embrittlement: Cracking Open the Disparate Mechanisms
Oxidation Behavior of Model FeCrAl Steel and APMT Alloy After Exposure in Steam
Quantifying the Environmentally Assisted Cracking Initiation and Short Crack Behavior in New Generation 7xxx Aluminium
Relating Microstructure to Environmental Degradation in Al-Mg Alloys
The Effect of Microstructural Surface States on the Corrosion of Additively Manufactured 316 Stainless Steel

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