This title appears in the Scientific Report :
2020
Please use the identifier:
http://hdl.handle.net/2128/25157 in citations.
Please use the identifier: http://dx.doi.org/10.1016/j.fusengdes.2020.111610 in citations.
Performance assessment of thick W/Cu graded interlayer for DEMO divertor target
Performance assessment of thick W/Cu graded interlayer for DEMO divertor target
The development of a divertor target for DEMO is of great importance, being able to sustain the harsh environment that is imposed on this component. To fulfill the loading requirements, different concepts were developed within the EUROfusion WPDIV project. The baseline concept is based on the ITER d...
Saved in:
Personal Name(s): | Richou, M. (Corresponding author) |
---|---|
Gallay, F. / Böswirth, B. / Chu, I. / Dose, G. / Greuner, H. / Kermouche, G. / Lenci, M. / Loewenhoff, Th. / Maestracci, R. / Meillot, E. / Missirlian, M. / Pastor, J. Y. / Quet, A. / Roccella, S. / Tejado, E. / Visca, E. / Pintsuk, G. / You, J. H. / Wirtz, Marius | |
Contributing Institute: |
Werkstoffstruktur und -eigenschaften; IEK-2 |
Published in: | Fusion engineering and design, 157 (2020) S. 111610 - |
Imprint: |
New York, NY [u.a.]
Elsevier
2020
|
DOI: |
10.1016/j.fusengdes.2020.111610 |
Document Type: |
Journal Article |
Research Program: |
Plasma-Wall-Interaction |
Link: |
Published on 2020-04-28. Available in OpenAccess from 2022-04-28. Published on 2020-04-28. Available in OpenAccess from 2022-04-28. |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1016/j.fusengdes.2020.111610 in citations.
The development of a divertor target for DEMO is of great importance, being able to sustain the harsh environment that is imposed on this component. To fulfill the loading requirements, different concepts were developed within the EUROfusion WPDIV project. The baseline concept is based on the ITER divertor target W-monoblock design. It is made of tungsten as armour material, CuCrZr as structural material and Cu-OFHC as compliant layer. One of the proposed alternative concepts aims to minimize the stress at interfaces by replacing the thick copper interlayer by W/Cu functionally graded material (FGM). In this study, the FGM interlayer, with a thickness of 500 μm, is composed of stacked elementary layers with the following three compositions: 25 vol.%W + 75 vol.%Cu, 50 vol.%W + 50 vol.%Cu, 75 vol.%W + 25 vol.%Cu. Several FGM interlayers were studied. In total three monoblock type mock-ups were manufactured. This paper describes the steps needed to manufacture mock-ups and characterization of elementary layers (composition, porosity, Young’s modulus). HHF tests applying up to 1000 cycles at 20 MW/m² and sub-sequent post-mortem examinations were performed to qualify the concept performance. |