Data for: Nuclear Response of Additive Manufactured GRCop-84 Copper for use in Lower Hybrid Launchers in a Fusion Environment
Nuclear Response of Additive Manufactured GRCop-84 Copper for use in Lower Hybrid Launchers in a Fusion Environment A. H. Seltzman*, S. J. Wukitch Massachusetts Institute of Technology, Plasma Science and Fusion Center, 190 Albany St, Cambridge, MA, 02139 (Received dd month 2020; published dd month 2020) Recent advances in selective laser melting (SLM) 3D printing technology allow additive manufacture of lower hybrid current drive (LHCD) RF launchers from a new material, Glenn Research Copper 84 (GRCop-84), a Cr2Nb (8 at. % Cr, 4 at. % Nb) precipitation hardened alloy, in configurations unachievable with conventional machining. Tensile strength and thermal conductivity are compared to other competing high conductivity copper alloys for fusion use. Swelling and conductivity at 100 DPA is predicted in the 1-2% and 65-70% IACS range, respectively by comparison to copper alloys with similar precipitate and grain size. Self-similar ion irradiation of a GRCop-84 target at 430°C to 20 DPA resulted in no noticeable void formation.