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Meeting MS&T21: Materials Science & Technology
Symposium Additive Manufacturing: Mechanisms and Mitigation of Aqueous Corrosion and High-temperature Oxidation
Presentation Title Electrochemical Behavior of Additively-manufactured Steels
Author(s) Mohammad Jamalkhani, Amir Mostafaei
On-Site Speaker (Planned) Mohammad Jamalkhani
Abstract Scope Compared to fusion-based additive manufacturing (AM) such as laser powder bed fusion (L-PBF), binder jet printing (BJP), aka a non-beam-based process, utilizes a powder feedstock and an inkjet printhead to shape metal powders into preforms that are then processed in a furnace to reach near-full density. Based on the AM processing, as-fabricated parts show different microstructures in which columnar grain structures with fine solidification cells are common in L-PBF steels, while fine equiaxed grains with some annealing twins are seen in BJP steels. Here, corrosion behavior of AM fabricated steels will be studied. Surface topography, porosity, surface oxide composition, and electrochemical characteristics, including pitting corrosion, dynamic polarization, and electrochemical impedance spectroscopy are investigated at room temperature in different electrolytes. Results are compared to corrosion behavior of wrought and cast steel alloys. The nature of passive film structure and its impact on the corrosion resistance of AM fabricated parts are discussed.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Assessing the Printability and Oxidation Resistance of AM Built AlxCoCrFeNi with Directed Energy Deposition
Corrosion Behavior of Additively Manufactured Parts Made Using Non-spherical Ti-6Al-4V Powder in 3.5 wt% NaCl Solution
Corrosion Behavior of Laser Powder Bed Fusion Processed Ti-6Al-4V in Different Electrolytes
Effect of Post Processing on the Corrosion Behavior of Selective Laser Melted Nickel Based Super Alloy in Acidic Environment
Electrochemical Behavior of Additively-manufactured Steels
Environmentally Assisted Cracking of AM718 Wire Arc Additively Deposited AM 718 – Role of Processing and Microstructure
High Temperature Oxidation Behavior of Additively Manufactured ZrB2-30vol%SiC in CO2
Influence of Heat Treatment on Electrochemical Behavior of Additively Manufactured 7050 Aluminum Alloy
Laser Shock Peening Effect on 5xxx Sensitization and Exfoliation of 5XXX series Aluminum Alloys
Performance Evaluation of Oxidized Inconel 625 Made by Laser-assisted Additive Manufacturing
SCC Behavior of IN 718 in BWR Conditions

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