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dc.creatorCrea, F. (Francesco)-
dc.creatorBöswirth, B. (Bernd)-
dc.creatorCacciotti, E. (Emanuele)-
dc.creatorGalatanu, A. (Andrei)-
dc.creatorGreuner, H. (Henri)-
dc.creatorGarcia-Rosales, C. (Carmen)-
dc.creatorLorusso, P. (Pierdomenico)-
dc.creatorRoccella, S. (Selanna)-
dc.creatorSal-Broco, E. (Elisa)-
dc.creatorVerdini, L. (Luigi)-
dc.creatorWirtz, M. (Marius)-
dc.identifier.citationCrea, F.; Böswirth, B.; Cacciotti, E.; et al. "Mock-ups fabrication by HRP technology with advanced W-alloy monoblocks for DEMO divertor target". Fusion engineering and design. 201, 2024, 114232 - *es
dc.description.abstractTungsten is the primary candidate armour material for the divertor target of the European demonstration fusion power plant. During operation at high temperature, pure tungsten is subject to fracture and recrystallization which results in a loss of strength and worsening of the thermal properties. Additionally, loss-of-coolant accidents with simultaneous air ingress can generate volatile and radioactive tungsten oxides. Advanced W-alloys were developed as alternative and upgrading armour materials of pure tungsten, such as potassium-doped tungsten laminates and self-passivating tungsten alloys. Three mock-ups were manufactured using potassium-doped tungsten laminates, W-10Cr-0.5Y and W-10Cr-0.5Y-0.5Zr as armour materials, each of them consisting of n degrees 4 blocks. The fabrication required optimization and upscaling of the ITER-like process which foresees oxygen-free high conductivity copper as interlayer joined to W-alloy armour block and CuCrZr ITER grade pipe welded to the Cu/W-alloy blocks by hot radial pressing. For quality control of the fabrication steps, non-destructive examination by ultrasonic testing was done on the monoblocks as received, after casting, after hot radial pressing and after high heat flux testing. The results demonstrated that these W-alloys can be used as armour materials of the European demonstration fusion power plant divertor target.-
dc.description.sponsorshipThis work has been carried out within the framework of the EUROfusion Consortium, funded by the European Union via the Euratom Research and Training Programme (Grant Agreement No 101052200 — EUROfusion). Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Commission. Neither the European Union nor the European Commission can be held responsible for them.-
dc.subjectÁrea de Ciencia y Tecnología de Materiales-
dc.subjectEU -DEMO plasma facing components.-
dc.subjectDivertor target mock-ups.-
dc.subjectAdvanced W-alloys.-
dc.subjectPlasma facing materials.-
dc.subjectHot radial pressing.-
dc.subjectUltrasonic testing.-
dc.subjectPassivating tungsten alloys.-
dc.subjectCommercially pure.-
dc.subjectThis is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).-
dc.titleMock-ups fabrication by HRP technology with advanced W-alloy monoblocks for DEMO divertor target-
dadun.citation.publicationNameFusion engineering and design.-

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