| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Additively Manufactured Alloys
|
| Presentation Title |
Selective Corrosion and Sensitization Behavior in Laser Powder Bed Fusion 316L |
| Author(s) |
Robert G. Kelly, Duane Macatangay, Jenna Conrades, Keegan Brunner |
| On-Site Speaker (Planned) |
Robert G. Kelly |
| Abstract Scope |
Application of the laser powder bed fusion (LPBF) process to stainless steel alloys, such as 316L, present promise due to the excellent strength and corrosion resistance of the wrought counterpart. Despite growing interest in the research and application of LPBF, little work has been performed to characterize the behavior of these alloys in aqueous environments. As with conventional welding processes, the non-equilibrium structure arising from rapid solidification presents potential issues in selective corrosion in these alloys. This work applies metallographic methods and electrochemical testing to determine the susceptibility of these alloys to selective attack at microstructural features such as melt pool boundaries. Susceptibility of sensitization is also investigated to assess the resistance of these alloys to intergranular corrosion from post-process heat treatments. Findings include melt-pool boundary attack and susceptibility to rapid sensitization that is not observed in conventionally wrought 316L. |
| Proceedings Inclusion? |
Planned: |