About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Corrosion, Protection and Damage Monitoring of Advanced Materials in Natural and Specific Environments
|
| Presentation Title |
Evaluation of Direct Energy Deposited SS316L for CO2 Containing Environmental Service |
| Author(s) |
Adnan Khan, Vasanth C. Shunmugasamy, Bilal Mansoor |
| On-Site Speaker (Planned) |
Adnan Khan |
| Abstract Scope |
Direct energy deposition (DED) enables rapid printing of large, complex geometries and local repairs. Additively manufactured (AM) parts from important structural metals such as SS316L are preferred for critical oil and gas assets, including fasteners and valve bodies. In service, DED components face CO2 environments, making it essential to understand their corrosion response and its correlation with microstructure. This work investigates how process parameters influence microstructural inhomogeneities and corrosion behavior of DED-printed SS316L. Scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) were used to analyze microstructure. Potentiodynamic polarization (PD) and electrochemical impedance spectroscopy (EIS) tests were conducted in 3.5wt.% NaCl solution saturated with CO2 at 25°C and 60°C on parallel and perpendicular build planes. X-ray photoelectron spectroscopy (XPS) was employed to evaluate nature of the developed passive oxide film. Research results will support informed adoption of DED SS316L components by the oil and gas sector, for sweet corrosion environments. |