EU ITER first wall panel CuCrZr material procurement and characterization

IF 2 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Fusion Engineering and Design Pub Date : 2025-09-17 DOI:10.1016/j.fusengdes.2025.115417

Margherita Sardo , Samuli Heikkinen , Jose Pacheco , Emir Örer , Taner Hergül , Can Uzel Osman , Hayao Eguchi , Masato Arai , Marta Freitas , Nuno A. Marques , Sergio A. Reis , Mónica Mendes Reis

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引用次数: 0

Abstract

Precipitation hardened CuCrZr is one of the materials for the ITER First Wall Panel (FWP) application. It is used as an intermediate layer between the stainless-steel structure and the W armour facing the plasma, with embedded water-cooling channels. Because of its high thermal conductivity combined with high strength this alloy is used as the FWP heatsink. Within the European Normal Heat Flux FWP, the three layers are joined by the Hot Isostatic Pressing (HIP) diffusion bonding process.

Past studies defined the optimum parameters for the CuCrZr material, considering the loads present on the ITER machine such as high thermo-mechanical stresses and fast neutron damage. Attention is given to material testing for mechanical properties at room and elevated temperature and microstructure to ensure compliant material of the EU FWP.

The comparison between real HIP sequence and HIP simulation on the resulting material properties demonstrates suitability of the approach.

The CuCrZr material produced has been used for the qualification of the HIP processes of the EU FWP, which increases the confidence on a successful FWP series production. This paper summarizes the EU FWP CuCrZr material’s mechanical and microstructural test results, obtained by the ISQ laboratory, showing compliance with ITER material requirements and a high consistency and coherence on the material properties along the production and among different material suppliers. Also, it provides an overview of the material quantities procured over the past years and the future needs for the EU FWP production.

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欧盟ITER首次墙板CuCrZr材料采购及表征

沉淀硬化CuCrZr是ITER第一壁板（FWP）应用的材料之一。作为不锈钢结构与面向等离子体的W装甲之间的中间层，内嵌水冷却通道。由于其高导热性和高强度，这种合金被用作FWP散热器。在欧洲标准热通量FWP中，三层通过热等静压（HIP）扩散粘合过程连接在一起。过去的研究考虑到ITER机器上存在的高热机械应力和快中子损伤等载荷，确定了CuCrZr材料的最佳参数。注重材料的室温、高温力学性能和微观结构测试，以确保材料符合欧盟FWP标准。实际HIP序列与HIP模拟所得材料性能的对比验证了该方法的适用性。所生产的CuCrZr材料已用于欧盟FWP的HIP工艺认证，这增加了成功生产FWP系列产品的信心。本文总结了ISQ实验室获得的欧盟FWP CuCrZr材料的力学和微观结构测试结果，表明材料符合ITER材料要求，并且在生产过程中以及不同材料供应商之间的材料性能具有高度的一致性和一致性。此外，它还概述了过去几年采购的材料数量以及欧盟FWP生产的未来需求。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Fusion Engineering and Design 工程技术-核科学技术

CiteScore

3.50

自引率

23.50%

发文量

275

审稿时长

3.8 months

期刊介绍： The journal accepts papers about experiments (both plasma and technology), theory, models, methods, and designs in areas relating to technology, engineering, and applied science aspects of magnetic and inertial fusion energy. Specific areas of interest include: MFE and IFE design studies for experiments and reactors; fusion nuclear technologies and materials, including blankets and shields; analysis of reactor plasmas; plasma heating, fuelling, and vacuum systems; drivers, targets, and special technologies for IFE, controls and diagnostics; fuel cycle analysis and tritium reprocessing and handling; operations and remote maintenance of reactors; safety, decommissioning, and waste management; economic and environmental analysis of components and systems.