| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Marine Materials and Structures
|
| Presentation Title |
Seawater Corrosion Resistance of Austenitic Stainless Steel Claddings on Low Carbon Steel Fabricated with Laser-Wire Directed Energy Deposition |
| Author(s) |
Scott C. Bozeman, Julie D Tucker, O Burkan Isgor |
| On-Site Speaker (Planned) |
Scott C. Bozeman |
| Abstract Scope |
Stainless steel overlay claddings are a mechanically robust and cost-effective solution for protecting large carbon / low-alloy steel components (e.g., pressure vessels, piping, storage tanks) from seawater corrosion. Laser-wire-directed energy deposition is an attractive manufacturing technique for producing such claddings because of the lower cost of wire feedstock compared to powder and a smaller heat-affected zone compared to arc welding methods. In this research, we examine the claddings’ seawater corrosion behavior as a function of processing parameters (e.g., laser power and number of clad layers) using open circuit potential, electrochemical impedance spectroscopy, linear polarization resistance, and cyclic polarization testing. All two-layer claddings are remarkably resistant to uniform corrosion because of their high alloying, while the single layer cladding experiences localized corrosion at Fe-rich peninsulas that emanate from the dissimilar metal cladding process. Higher laser powers decrease the δ-ferrite content due to a lowered cooling rate, which reduces pitting resistance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, Iron and Steel, Additive Manufacturing |