Journal Article

FZJ-2021-01779

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Self-passivating smart tungsten alloys for DEMO: a progress in joining and upscale for a first wall mockup

Bachurina, D. (Corresponding author) ; Tan, X. (Corresponding author)FZJ* ; Klein, F.FZJ* ; Suchkov, A. ; Litnovsky, A. (Corresponding author)FZJ* ; Schmitz, J. ; Gonzalez-Julian, J.FZJ* ; Bram, M.FZJ* ; Coenen, J. W.FZJ* ; Wu, Y.-C. ; Linsmeier, C.FZJ*

2021
Springer Singapore Singapore

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Please use a persistent id in citations: http://hdl.handle.net/2128/27757  doi:10.1007/s42864-021-00079-5

Abstract: Self-passivating, so-called smart alloys are under development for a future fusion power plant. These alloys containing tungsten, chromium and yttrium must possess an acceptable plasma performance during a regular plasma operation of a power plant and demonstrate the suppression of non-desirable oxidation of tungsten in case of an accident. The up-scaling of the bulk smart alloys to the reactor-relevant sizes has begun and the first samples with a diameter of 50 mm and thickness of 5 mm became available. The samples feature high relative density of above 99% and good homogeneity. With production of bulk samples, the research program on joining the smart alloy to the structural material was initiated. In a present study, the novel titanium–zirconium–beryllium braze was applied successfully to join the smart alloy to the Rusfer-reduced-activation steel. The braze has survived at least a hundred of cyclic thermal excursions in the range of 300–600 °C without mechanical destruction.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)
2. Plasmaphysik (IEK-4)

Research Program(s):

1. 134 - Plasma-Wand-Wechselwirkung (POF4-134) (POF4-134)

Appears in the scientific report 2021

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Database coverage:
; ; Clarivate Analytics Master Journal List ; DEAL Springer ; DEAL Springer ; Emerging Sources Citation Index ; IF >= 5 ; JCR ; SCOPUS ; Web of Science Core Collection

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