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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Environmental Degradation of Additively Manufactured Alloys
Presentation Title Effect of Post Processing Treatments on Corrosion Behavior of Laser Powder Bed Fusion(LPBF) 7050 Aluminum Alloy
Author(s) Rupesh Rajendran, Crosby N Owens, Preet M Singh
On-Site Speaker (Planned) Rupesh Rajendran
Abstract Scope Recent advancements in nano-particle or inoculant addition has mitigated the problems of hot tearing and solidification cracking, which resulted in limited adoption of high-strength, additively manufactured(AM) 7xxx aluminum alloys produced by laser powder bed fusion(LPBF) process. However, a considerably small number of studies have focused on the corrosion behavior of such alloys. This work aims to explore the influence of microstructure on the corrosion behavior of AM 7050 aluminum alloy as a result of post-processing treatments. AM 7050 alloy in as-built, hot isostatically pressed, and differently heat-treated conditions are characterized and subjected to exposure and localized electrochemical tests like scanning vibration electrode technique(SVET). Potentiodynamic polarization and electrochemical impedance spectroscopy techniques are employed to understand the general electrochemical behavior. The overall corrosion susceptibility is compared to an equivalent wrought 7050 alloy, the results of which will be beneficial for consideration of these alloys for aerospace applications from a corrosion standpoint.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, Aluminum, Other

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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