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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Environmental Degradation of Additively Manufactured Alloys
Presentation Title Impact of Chemistry and Microstructure on Corrosion Properties of Designed High-performance Stainless Steel Powder for Additive Manufacturing
Author(s) Dana Frankel, Abhinav Saboo, Marie Thomas, Jason T. Sebastian
On-Site Speaker (Planned) Jason T. Sebastian
Abstract Scope The unique microstructures resulting from selective laser melting (SLM)-based additive manufacturing (AM) of 17-4 stainless steel can lead to significant differences in corrosion performance of the additively manufactured material compared to typical wrought 17-4. QuesTek has developed an integrated computational materials engineering (ICME)-informed modeling framework to predict AM 17-4 microstructure and properties, applying this framework to design a modified 17-4 alloy with enhanced reliability and performance in the as-built and direct-aged conditions compared to standard commercial 17-4 powders. The presentation will describe results from corrosion testing including potentiodynamic polarization, salt fog testing, and rising step load (RSL) to assess the general corrosion properties, pitting behavior, and stress corrosion cracking performance for the designed 17-4 custom powder AM builds, commercial 17-4 powder AM builds, and wrought 17-4 under different heat treatment conditions. Insights regarding the relationship between chemistry, microstructure, and corrosion performance in both AM and wrought material will be discussed.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, ICME, Iron and Steel

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

AM Stainless Steel 316L in Corrosive Environment: Features Controlling Pitting and Metal Dissolution
Corrosion of Additively Manufacture Magnesium Alloys
Corrosion Properties of AM A20X
Effect of Oxygen on Corrosion Resistance of Stainless Steel 316L Prepared by Powder Bed Fusion
Effect of Post Processing Treatments on Corrosion Behavior of Laser Powder Bed Fusion(LPBF) 7050 Aluminum Alloy
Environmental Susceptibility of EBM Ti-6Al-4V as a Function of Print Direction in Seawater
Exploring the Stress-corrosion Cracking Susceptibility of Additively Manufactured 316L in Boiling Magnesium Chloride
High Temperature Oxidation of Additively and Conventionally Manufactured Heat Resistant Steel: HK30Nb
How Part Surfaces Influence Corrosion for a Laser Powder Bed Fusion 316L Stainless Steel
Hydrogen Trapping at Grain Boundaries and Dislocation Structures in Additively-manufactured Stainless Steel 316L Evaluated via SIMS/EBSD
Impact of Chemistry and Microstructure on Corrosion Properties of Designed High-performance Stainless Steel Powder for Additive Manufacturing
Long-term High-temperature Oxidation Performance of Inconel 625 Processed by Laser-assisted Additive Manufacturing
Metal Dusting Resistance of Additively Manufactured Ni-based Alloys: Influence of Post-processing Surface and Heat Treatments
Microstructure and Corrosion Behavior of 309L Stainless Steel Clad onto Carbon Steel Using Wire-fed Directed Energy Deposition
On the Heating Rate Dependent Oxide Formation and Evolution on Laser-based Directed Energy Additively Deposited IN718
Pulsed Transient High Heat Flux Testing of Coated Alloys in Extreme Environments
Sensitization of Austenitic Alloys Made by Laser Powder Bed Fusion
Surface Finishing Effects on the Corrosion Properties of Additively Manufactured 316L Stainless Steel
Transpiration Cooling of Additively Manufactured Porous Metallic Structures in High Heat Flux Environments
Tribo-corrosion Degradation of Additively Manufactured Multi-principal Element Alloy.

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