This title appears in the Scientific Report :
2015
Please use the identifier:
http://dx.doi.org/10.1016/j.jnucmat.2015.09.034 in citations.
Calculation of Cracking inTungsten Manufactured According to ITER Specifications Under Pulsed Heat Load
Calculation of Cracking inTungsten Manufactured According to ITER Specifications Under Pulsed Heat Load
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 depen...
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Personal Name(s): | Arakcheev, A. A. (Corresponding author) |
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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, Alexander / Mertens, Philippe / Wirtz, Marius / Linsmeier, Christian / Kreter, Arkadi / Loewenhoff, Thorsten / Begrambekov, L. / Grunin, A. | |
Contributing Institute: |
Werkstoffstruktur und -eigenschaften; IEK-2 Plasmaphysik; IEK-4 |
Published in: | Journal of nuclear materials, 467 (2015) 1, S. 165-171 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2015
|
DOI: |
10.1016/j.jnucmat.2015.09.034 |
Document Type: |
Journal Article |
Research Program: |
Plasma-Wall-Interaction |
Publikationsportal JuSER |
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. |