About this Abstract |
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 |