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Meeting 2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
Symposium 2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
Presentation Title Thin Wall Microstructure and Mechanical Behavior of GRX-810 ODS Alloy Fabricated Across Multiple Laser Powder Bed Fusion Systems
Author(s) Patricio Sebastian Rodriguez Beltran, Jimena Coello, Paul R Gradl, Colton Katsarelis, Sohail M Mohammed, Timothy M Smith, Francisco Medina, James P Carney
On-Site Speaker (Planned) Patricio Sebastian Rodriguez Beltran
Abstract Scope This study investigates the microstructural characteristics and mechanical performance of the NASA GRX-810 Oxide Dispersion Strengthened (ODS) NiCoCr alloy with a 0.4% Y2O3 fabricated via Laser Powder Bed Fusion (L-PBF) across multiple commercial systems. All specimens underwent Hot Isostatic Pressing (HIP) post-processing to evaluate its effect on densification and microstructural evolution. Thin-wall and bulk coupons are characterized to assess defect content, geometry, grain morphology, grain boundary character, precipitate dispersion as a function of machine parameters and wall thickness. Preliminary results suggest that microstructural features, including grain size and boundary angle distribution, are sensitive to machine-dependent processing parameters, highlighting the importance of platform selection in GRX-810 fabrication. The effect of build orientation on tensile properties is evaluated using ASTM E8 sub-sized specimens printed at multiple angles, with Yield Strength (YS), Ultimate Tensile Strength (UTS), elongation, and Young’s modulus measured at room temperature.
Proceedings Inclusion? Undecided

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