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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 Corrosion Behavior of Additively Manufactured Parts Made Using Non-spherical Ti-6Al-4V Powder in 3.5 wt% NaCl Solution
Author(s) Sourabh Dilip Bagi, Muktesh Paliwal, Anthony D Rollett, Amir Mostafaei
On-Site Speaker (Planned) Amir Mostafaei
Abstract Scope In powder bed additive manufacturing, feedstock and processing affect final microstructure and properties of 3D-printed parts. While numerous studies have evaluated 3D-printing of spherical powder, very limited research has been carried out on the processing of the non-spherical feedstock. This study is targeted specifically to the use of non-spherical, HDH (Hydride-DeHydride), Ti-6Al-4V powders in the L-PBF process. Two different post-heat treatments including hot isostatic pressing and solution treatment are applied. The microstructures, potentiodynamic curves, and electrochemical impedance spectroscopy methods are characterized for L-PBF processed and post-treated HDH Ti-6Al-4V specimens. Though as-built part exhibit anisotropic microstructure (i.e., lamellar α + acicular α’ + β phases) and corrosion behavior compared to ASTM standard wrought Ti-6Al-4V, post processings results in homogenized grain structures and enhanced corrosion behavior. Constituent phases, grain size, and morphology directly determine the corrosion resistance of the resulting parts.

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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