Open Access Conference Proceedings

Research and development of construction materials for fusion reactors is an important international task. CuCrZr material is a promising material for fabrication of coolant tubes inside the divertor and other components. In recent decade, materials with ultrafine-grained (UFG) structure are widely used due to their unique physical and mechanical properties. To be used in fusion technology, the material of the coolant tube should withstand pressure, show sufficient corrosion properties and neutron irradiation resistance. The UFG materials are known to improve the strength, ductility, heat and corrosion resistance, and according to the recent studies, they are expected to provide improved irradiation resistance. The aim of this study is to investigate the cryorolled UFG CuCrZr material behavior after neutron irradiation and to relate it to the microstructural changes. The post-irradiation evaluation was performed in Hot-cells facilities in Research Centre Řež. Mechanical properties were tested by static tensile test at ambient temperature, supplemented by microstructural analysis using SEM-EBSD. The results were compared with material processed by convention rolling method at ambient temperature.

Keywords: CuCrZr alloy, cryorolling, neutron irradiation, mechanical properties, post-irradiation evaluation

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