Design of a GRCop-42 irradiation and mechanical characterization experiments at the University of Missouri Research Reactor
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Recent advances in additive manufacturing (AM) have demonstrated its potential to produce radiation-resilient alloys, with post-irradiation studies revealing that AM microstructures may exhibit superior resistance to hardening compared to wrought counterparts. Of these AM materials, GRCop-42--a high-strength, high-thermalconductivity copper alloy--emerges as a promising AM candidate for nuclear systems, where tailored microstructures could further enhance performance under extreme irradiation and thermal loads. However, to be utilized effectively in industry, further data must be gathered on how neutron irradiation impacts AM-processed GRCop-42. To address this gap in knowledge a radiation campaign was proposed to take place at the Missouri University Research Reactor (MURR) to study the changes in mechanical properties during 30-, 90- and 180-day radiation. With the goal of providing essential data to advance its deployment in next-generation reactors and propulsion systems requiring materials that withstand simultaneous radiation, heat, and mechanical stress. Throughout the creation of the campaign, many lessons were learned while working with reactor personnel which resulted in scope creep
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M.S.