Performance assessment of thick W/Cu graded interlayer for DEMO divertor target

被引：28

作者：

Richou, M. ^{[1
]}

Gallay, F. ^{[1
]}

Boeswirth, B. ^{[2
]}

Chu, I ^{[3
]}

Dose, G. ^{[4
]}

Greuner, H. ^{[2
]}

Kermouche, G. ^{[5
]}

Lenci, M. ^{[6
]}

Loewenhoff, Th ^{[6
]}

Maestracci, R. ^{[7
]}

Meillot, E. ^{[7
]}

Missirlian, M. ^{[1
]}

Pastor, J. Y. ^{[8
]}

Quet, A. ^{[7
]}

Roccella, S. ^{[9
]}

Tejado, E. ^{[8
]}

Wirtz, M. ^{[6
]}

Visca, E. ^{[9
]}

Pintsuk, G. ^{[6
]}

You, J. H. ^{[2
]}

机构：

[1] CEA, IRFM, F-13108 St Paul Les Durance, France

[2] Max Planck Inst Plasma Phys, Boltzmann Str 2, D-85748 Garching, Germany

[3] CEA, LITEN, F-38000 Grenoble, France

[4] Univ Roma Tor Vergata, Dipartimento Ingn Ind, Via Politecn 1, I-00133 Rome, Italy

[5] Ecole Mines St Etienne, LGF UMR5307, CNRS, F-42023 St Etienne, France

[6] Forschungszentrum Julich, Trilateral Euregio Cluster TEC, Inst Energy & Climate Res Plasmaphys, D-52425 Julich, Germany

[7] CEA, DAM, F-37260 Monts, France

[8] Univ Politecn Madrid, Dept Ciencia Mat CIME, C Prof Aranguren 3, E-28040 Madrid, Spain

[9] ENEA, Nucl Fus Dept, CR Frascati, Via E Fermi 45, I-00044 Frascati, Italy

来源：

FUSION ENGINEERING AND DESIGN | 2020年 / 157卷

关键词：

DEMO; Divertor; Plasma-facing component; Functional graded material; Non-destructive examinations; PROGRESS; DESIGN;

D O I：

10.1016/j.fusengdes.2020.111610

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

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 mu m, 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/m(2) and sub-sequent post-mortem examinations were performed to qualify the concept performance.

引用

页数：6

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