| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Additively Manufactured Alloys
|
| Presentation Title |
Localized Corrosion of Additively Manufactured Stainless Steel in Atmospheric Environments |
| Author(s) |
Peter Renner, Erin Karasz, Kasandra Escarcega-Herrera, Michael Heiden, Michael A. Melia |
| On-Site Speaker (Planned) |
Peter Renner |
| Abstract Scope |
Susceptibility to localized corrosion of laser powder bed fusion (L-PBF) stainless steels has been a topic of intense research for the past several years however little has been published on their atmospheric corrosion response. For many cases, atmospheric corrosion conditions will be more common than full immersion conditions and present environment variability that are hard to replicate. Pit characteristics of L-PBF and wrought stainless steel samples will be compared after exposure to different combinations of constant humidity (40/76% relative humidity) and salt loading (20/300 µg/cm2 of NaCl and artificial sea water). The impact chemical heterogeneities, inherent to the L-PBF as-printed microstructure and surface, have on local corrosion susceptibility will be explored. Atmospheric corrosion response of as-printed surfaces will be presented and reveal a distinct corrosion attack morphology from their polished counterparts of the same material.
SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525. SAND2022-8864 A |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Other, Characterization |