| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Additively Manufactured Materials
|
| Presentation Title |
Effect of Post-Processing Heat Treatments on the Stress Corrosion Cracking Behavior of Binder Jet Printed 17-4PH Stainless Steel |
| Author(s) |
Borna Rafiei, Raymond Santucci, Markus Chmielus, Zachary Harris |
| On-Site Speaker (Planned) |
Borna Rafiei |
| Abstract Scope |
It is well-established that stress corrosion cracking (SCC) susceptibility is strongly dependent on alloy microstructure. Additively manufactured (AM) materials exhibit unique microstructures relative to conventionally manufactured (CM) components, which could lead to differences in SCC performance. In this work, we investigate the effect of different post-processing heat treatments on the SCC behavior of 17-4PH fabricated via binder jet printing (BJP), which is a non-fusion AM approach. Electron microscopy-based evaluations confirm microstructural differences between CM and BJP 17-4PH, especially in the as-sintered condition, including porosity, retained ferrite/ austenite, and evidence of sensitization. SCC experiments are performed on each post-processing condition of BJP 17-4PH while fully immersed in quiescent 0.6 M NaCl and polarized to -1.1 VSCE. Results reveal a strong influence of post-processing on SCC as well as the fracture morphology. The causal factors potentially responsible for this variation are then discussed in the context of existing models for SCC. |
| Proceedings Inclusion? |
Planned: |