About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Additively Manufactured Materials
|
| Presentation Title |
LPBF-produced Hybrid IN718-SS316L with Excellent Corrosion Resistance |
| Author(s) |
Xiaolei Guo, Hailong Dai, Liyi Wang, Wei Xiong, Samuel Friedlein |
| On-Site Speaker (Planned) |
Xiaolei Guo |
| Abstract Scope |
Laser powder bed fusion (LPBF) is a versatile additive manufacturing technique recently applied to produce hybrid alloys with enhanced mechanical and corrosion properties. By blending IN718 and stainless steel 316L powders at an optimized ratio, we developed a hybrid alloy with excellent corrosion resistance. The as-built and heat-treated samples underwent comprehensive characterization to understand how composition and processing influence microstructure evolution across multiple length scales. Corrosion behavior was investigated using electrochemical testing combined with advanced microstructural analysis. The alloy performance was compared to LPBF-produced IN718 and SS316L, as well as conventionally rolled counterparts. Results show that the annealed hybrid alloy exhibits corrosion resistance in a chloride-containing environment comparable to LPBF IN718, significantly outperforming SS316L. The improvement is attributed to its refined microstructure and superior surface passivity, demonstrating the potential of LPBF-designed hybrid alloys for demanding corrosion-prone applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Environmental Effects |