About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Metal Matrix Composites: Processing, Additive Manufacturing, and Applications
|
| Presentation Title |
Process Optimization and Compressive Behavior of Triply Periodic Minimal Surface Structures Fabricated by Laser Powder Bed Fusion with Fe-12Cr-6Al-4.5B Alloy |
| Author(s) |
Felix Aguilar, Sydney Lynch, Nicolas Ayers, Kiran Nimishakavi, Paul Day, Brendan Ensor, Yongho Sohn |
| On-Site Speaker (Planned) |
Felix Aguilar |
| Abstract Scope |
Triply periodic minimal surface (TPMS) structures fabricated from Fe-12Cr-6Al-4.5B alloy and hermetically sealed within an Fe-12Cr-6Al alloy shell are of interest for engineering applications requiring mechanical strength, neutron shielding, and corrosion resistance. This study investigates the laser powder bed fusion (LPBF) fabrication of Fe-12Cr-6Al-4.5B (wt.%) TPMS structures. Results demonstrate that cracking was mitigated and a 50% porous TPMS structure was successfully produced using reduced energy input, i.e., lower volumetric energy density or higher scan speed, relative to the boron-free Fe-12Cr-6Al alloy. Phase constituents, defect populations (e.g., lack-of-fusion flaws), and microstructural evolution were characterized by X-ray diffraction and optical and scanning electron microscopy. The compressive mechanical behavior of the Fe-12Cr-6Al-4.5B TPMS structures was evaluated to provide insight into the structural performance of hermetically sealed Fe-12Cr-6Al components incorporating Fe-12Cr-6Al-4.5B TPMS structures. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Nuclear Materials, Process Technology |