| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Materials in Energy Environments
|
| Presentation Title |
Improved Intergranular Corrosion Resistance of Laser Powder Bed Fusion Printed Stainless Steels via Feedstock Modification |
| Author(s) |
Venkata Bhuvaneswari Vukkum, Evan Delvecchio, Jijo ChristudasJustus, Steven Storck, Rajeev Gupta |
| On-Site Speaker (Planned) |
Venkata Bhuvaneswari Vukkum |
| Abstract Scope |
Laser powder bed fusion (LPBF), an additive manufacturing (AM) technique for metals, was employed to fabricate components using a modified feedstock of 316L stainless steel powder. The modification of the feedstock involved ball-milling a mixture of commercial 316L powder and additives comprising 1 wt% cerium oxide (CeO2), lanthanum (III) nitrate hexahydrate (La (NO3)3·6H2O), and chromium nitride (CrN). Following this, the LPBF-316L specimens were subjected to sensitization at a temperature of 675°C for a duration of 24 hours. The influence of these additives on intergranular corrosion (IGC) was investigated according to the guidelines provided by ASTM G108-94 and A262-14 standards. Notably, LPBF-316L specimens incorporating La(NO3)3·6H2O exhibited heightened resistance against IGC. To gain insights into the improved IGC resistance observed in LPBF-316L with the addition of La(NO3)3·6H2O, the microstructure of the LPBF specimen was thoroughly examined and analyzed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Iron and Steel, High-Temperature Materials |