Albayrak, Muhammet GokhanGuler, OmerGuler, Seval HaleEvin, ErtanAlmisned, GhadaSen Baykal, DuyguTekin, Huseyin Ozan2026-06-192026-06-1920260029-54501943-7471https://doi.org/10.1080/00295450.2025.2582993https://hdl.handle.net/20.500.12899/5669This study explores the physical, structural, and radiation shielding enhancements in Inconel 718 superalloys reinforced with 1 wt% Y2O3 and varying Pr2O3 contents from 0 to 10 wt%, respectively. X-ray diffraction analysis confirmed preservation of the face-centered cubic structure, with increasing Pr2O3 inducing peak broadening and partial amorphization. The scanning electron microscopy/energy-dispersive X-ray spectroscopy results verified the homogeneous dispersion of oxides without agglomeration. Gamma-ray shielding parameters, including the mass attenuation coefficient (MAC), half-value layer, and effective atomic number, significantly improved with higher Pr2O3 content, particularly at low to mid photon energies.The 718Y-10PO sample exhibited the lowest transmission factors and the highest MAC values across all the tested energies. Buildup factors decreased in the Pr-rich samples, confirming reduced photon scattering. Notably, the fast neutron removal cross section for 718Y-10PO as 0.15521 cm-1 exceeded the benchmark materials like graphite and B4C. These findings establish the 718Y-10PO alloy as a promising candidate for advanced nuclear shielding applications, combining structural integrity with promising gamma and neutron attenuation capabilities.eninfo:eu-repo/semantics/closedAccessNickel-Based SuperalloysRare Earth Oxide ReinforcementGamma-Ray AttenuationFast Neutron ShieldingPraseodymium OxideArticle10.1080/00295450.2025.2582993WOS:001659898300001Q20000-0001-9833-93920000-0002-6762-6898