Journal Article

FZJ-2015-06876

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Calculation of Cracking inTungsten Manufactured According to ITER Specifications Under Pulsed Heat Load

Arakcheev, A. A. (Corresponding author) ; Skovorodin, D. I. ; Burdakov, A. V. ; Shoshin, A. A. ; Polosatkin, S. V. ; Vasilyev, A. A. ; Postupaev, V. V. ; Vyacheslavov, L. N. ; Kasatov, A. A. ; Huber, A.FZJ* ; Mertens, P.FZJ* ; Wirtz, M.FZJ* ; Linsmeier, C.FZJ* ; Kreter, A.FZJ* ; Loewenhoff, T.FZJ* ; Begrambekov, L. ; Grunin, A.

2015
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.jnucmat.2015.09.034

Abstract: A mathematical model of surface cracking under pulsed heat load was developed. The model correctly describes a smooth brittle–ductile transition. The elastic deformation is described in a thin-heated-layer approximation. The plastic deformation is described with the Hollomon equation. The time dependence of the deformation and stresses is described for one heating–cooling cycle for a material without initial plastic deformation.The model can be applied to tungsten manufactured according to ITER specifications. The model shows that the stability of stress-relieved tungsten deteriorates when the base temperature increases. This proved to be a result of the close ultimate tensile and yield strengths. For a heat load of arbitrary magnitude a stability criterion was obtained in the form of condition on the relation of the ultimate tensile and yield strengths.

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Contributing Institute(s):

1. Werkstoffstruktur und -eigenschaften (IEK-2)
2. Plasmaphysik (IEK-4)

Research Program(s):

1. 174 - Plasma-Wall-Interaction (POF3-174) (POF3-174)

Appears in the scientific report 2015

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Database coverage:
Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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