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Technological Processes for Steel Applications in Nuclear Fusion

Rieth, Michael ORCID iD icon; Dürrschnabel, Michael ORCID iD icon; Bonk, Simon; Jäntsch, Ute; Bergfeldt, Thomas ORCID iD icon; Hoffmann, Jan; Antusch, Steffen; Simondon, Esther; Klimenkov, Michael ORCID iD icon; Bonnekoh, Carsten; Ghidersa, Bradut-Eugen; Neuberger, Heiko; Rey, Jörg; Zeile, Christian; Pintsuk, Gerald; Aiello, Giacomo

Abstract (englisch):

Plasma facing components for energy conversion in future nuclear fusion reactors require a broad variety of different fabrication processes. We present, along a series of studies, the general effects and the mutual impact of these processes on the properties of the EUROFER97 steel. We also consider robust fabrication routes, which fit the demands for industrial environments. This includes heat treatment, fusion welding, machining, and solid-state bonding. Introducing and following a new design strategy, we apply the results to the fabrication of a first-wall mock-up, using the same production steps and processes as for real components. Finally, we perform high heat flux tests in the Helium Loop Karlsruhe, applying a few hundred short pulses, in which the maximum operating temperature of 550 °C for EUROFER97 is finally exceeded by 100 K. Microstructure analyses do not reveal critical defects or recognizable damage. A distinct ferrite zone at the EUROFER/ODS steel interface is detected. The main conclusions are that future breeding blankets can be successfully fabricated by available industrial processes. The use of ODS steel could make a decisive difference in the performance of breeding blankets, and the first wall should be completely fabricated from ODS steel or plated by an ODS carbon steel.

Verlagsausgabe §
DOI: 10.5445/IR/1000140989
Veröffentlicht am 09.12.2021
DOI: 10.3390/app112411653
Zitationen: 12
Web of Science
Zitationen: 11
Zitationen: 13
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Neutronenphysik und Reaktortechnik (INR)
Institut für Angewandte Materialien – Werkstoffkunde (IAM-WK)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 08.12.2021
Sprache Englisch
Identifikator ISSN: 2076-3417
KITopen-ID: 1000140989
HGF-Programm 31.13.05 (POF IV, LK 01) Neutron-Resistant Structural Materials
Erschienen in Applied Sciences
Verlag MDPI
Band 11
Heft 24
Seiten Art.-Nr.: 11653
Bemerkung zur Veröffentlichung This article belongs to the Special Issue Breeding Blanket: Design, Technology and Performance
Schlagwörter blanket first wall; oxide dispersion strengthened steel; high heat flux; diffusion bonding; welding; EUROFER97
Nachgewiesen in Scopus
Web of Science
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