About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
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Additive Manufacturing Materials, Processes and Applications for Energy Industry
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| Presentation Title |
Process–Structure–Property Mapping of Wire-LDED FeCrAl: Effects of Shielding Gas and the Role of HIP |
| Author(s) |
Seongun Yang, Laxman Bhatta, Ryan E Knighton, Jacob M Burnett, Trent M LaMont, Zhengming Wang, Somayeh Pasebani |
| On-Site Speaker (Planned) |
Seongun Yang |
| Abstract Scope |
FeCrAl alloys are leading accident-tolerant-fuel claddings, yet powder-based scale-up is costly. We demonstrate a powder-free alternative that couples wire-fed laser directed energy deposition (W-LDED) with hot isostatic pressing (HIP) to fabricate dense, FeCrAl parts. Samples were deposited at 400–1100 W and 600 mm min⁻¹ with 100 % wire feed under argon or nitrogen, then tested in the as-printed or HIPed (1150 °C, 150 MPa, 3 h) state. Four conditions (Ar-AP, N₂-AP, Ar-HIP, N₂-HIP) were benchmarked via SEM/EBSD, Archimedes density, and tensile/hardness tests. Argon builds showed pronounced strength anisotropy between build and scan directions, which HIP largely eliminated. Nitrogen builds were nearly isotropic in the as-printed state but lost strength after HIP. Mapping these process–structure–property links shows that shielding gas sets initial porosity and texture, while HIP balances density and anisotropy, delivering fully dense FeCrAl W-LDED components for critical repairs in energy and aerospace systems. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Nuclear Materials, Mechanical Properties |