%0 Journal Article
%A Klein, Felix
%A Litnovsky, Andrey
%A Tan, Xiaoyue
%A Gonzalez-Julian, Jesus
%A Rasinski, Marcin
%A Linsmeier, Christian
%A Bram, Martin
%A Coenen, Jan Willem
%T Smart alloys as armor material for DEMO: Overview of properties and joining to structural materials
%J Fusion engineering and design
%V 166
%@ 0920-3796
%C New York, NY [u.a.]
%I Elsevier
%M FZJ-2021-00913
%P 112272 -
%D 2021
%X Tungsten test is currently the baseline first-wall armor material for a future DEMOnstration power plant. Smart alloys, containing tungsten (W), 11.4 weight (wt) % chromium (Cr), and 0.6 wt% yttrium (Y), aim at achieving passive safety in case of air ingress into the vacuum vessel and a loss-of-coolant accident causing a temperature rise above 1200 K for weeks. In such a case, smart alloys suppress oxidation and sublimation of radioactive W.This publication summarizes several important properties of smart alloys: the suppression of oxidation, the hardness as a function of the microstructure, and potential carbide formation in the presence of carbon (C) impurities. Further, first results on joining them to the EUROFER by field-assisted sintering technology (FAST) without interface layer are presented. In literature, FAST is also known as spark plasma sintering (SPS). A stable joint with an tungsten–iron (W–Fe) diffusion layer of 100 nm at the interface was achieved. The joint survived several heat cycles to 873 K.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000640896300002
%R 10.1016/j.fusengdes.2021.112272
%U https://juser.fz-juelich.de/record/890368