TY  - JOUR
AU  - Hirai, T.
AU  - Panayotis, S.
AU  - Barabash, V.
AU  - Amzallag, C.
AU  - Escourbiac, F.
AU  - Durocher, A.
AU  - Merola, M.
AU  - Linke, J.
AU  - Loewenhoff, Th.
AU  - Pintsuk, G.
AU  - Wirtz, M.
AU  - Uytdenhouwen, I.
TI  - Use of Tungsten Material for the ITER Divertor
JO  - Nuclear materials and energy
VL  - 9
SN  - 2352-1791
CY  - Amsterdam [u.a.]
PB  - Elsevier
M1  - FZJ-2017-06000
SP  - 616 - 622
PY  - 2016
AB  - Since the ITER divertor design includes tungsten monoblocks in the vertical target where heat loads are maximal, the design to protect leading edges as well as technology R&D for high performance armor-heat sink joint were necessary to be implemented. In the R&D, the availability of the technology was demonstrated by high heat flux test of tungsten monoblock components. Not systematically but frequently macro-cracks appeared at the middle of monoblocks after 20 MW/m2 loading. The initiation of such macro-cracks was considered to be due to cyclic exposure to high temperature, ∼2000 °C, where creep, recrystallization and low cycle fatigue were concerned. To understand correlation between the macro-crack appearance and mechanical properties and possible update of acceptance criteria in the material specification, an activity to characterize the tungsten monoblocks was launched.
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1016/j.nme.2016.07.003
UR  - https://juser.fz-juelich.de/record/836978
ER  -