| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
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Additive Manufacturing and Alloy Design: Bridging Fundamental Physical Metallurgy, Advanced Characterization Techniques, and Integrated Computational Materials Engineering for Advanced Materials
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| Presentation Title |
Additive Manufacturing of Alumina-Forming Austenitic Steels for Next-Generation Nuclear Systems |
| Author(s) |
Lorenzo Notari, Enrico Virgillito, Daniele De Caro, Mariangela Lombardi, Francisco Garcia Ferrè |
| On-Site Speaker (Planned) |
Lorenzo Notari |
| Abstract Scope |
The high temperatures, corrosiveness, and intense neutron irradiation conditions typical in next generation nuclear systems call for the enhancement of the actual structural materials. Alumina-forming austenitic (AFA) stainless steels seem a promising solution, offering excellent high-temperature corrosion resistance, good strength, and outstanding high-temperature performance. The research goal is to explore the feasibility of structural components production from an innovative AFA composition using Laser Powder Bed Fusion (L-PBF) as additive manufacturing technology. L-PBF processability studies are carried out to identify and optimize strategies for producing high-density and high-quality components while minimizing crack susceptibility and the occurrence of microstructural defects. Custom powders are produced from AFA rods using Gas Atomization (GA). Particle size distribution, particle density and phase compositions of the powders are characterized using SEM, XRD and He-Pycnometer before proceeding with the production of bulk samples. These studies on components produced via L-PBF represent a pivotal milestone for advancing LFR manufacturing. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Nuclear Materials, Powder Materials |