About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
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Environmental Degradation of Additively Manufactured Alloys
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Presentation Title |
Localized Corrosion of Additively Manufactured Stainless Steels |
Author(s) |
Michael A. Melia, Jesse Duran, Rebecca Marshall, Ryan Katona, Rebecca Schaller, Jeffrey Rodelas, Michael Heiden, Bradley Jared, Robert Kelly, Eric Schindelholz |
On-Site Speaker (Planned) |
Michael A. Melia |
Abstract Scope |
Additively manufactured (AM) metals exhibit numerous microstructural and morphological differences compared to their wrought counterparts from dislocation cell structures to uniquely rough surfaces. The influence these unique features have on the metals’ corrosion resistance are still under investigation with most current works limited to laboratory experiments. The current state of understanding for AM stainless steels in corrosive environments will be presented along with active research including: the atmospheric corrosion behavior of AM stainless steels, reasons for localized corrosion attack of melt pool boundaries, and the impact as-printed roughness has on the local corrosion of AM metals. Several aspects of how the surface roughness of an AM part controls local corrosion will be explored including surface finishing treatments for mitigation and a COMSOL approach to predict pit stability.
SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525. SAND2020-6651 A. |
Proceedings Inclusion? |
Planned: |