期刊
JOURNAL OF NUCLEAR MATERIALS
卷 481, 期 -, 页码 134-146出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnucmat.2016.09.020
关键词
Plasma-facing material; Laminate composite; Fusion material; Tungsten; Neutron irradiation
资金
- U.S. Department of Energy, Office of Science, Fusion Energy Sciences
- U.S. Department of Energy [DE-AC05-00OR22725]
Tungsten-copper laminate composite has shown promise as a structural plasma-facing component as compared to tungsten rod or plate. The present study evaluated the tungsten-copper composite after irradiation in the High Flux Isotope Reactor (HFIR) at temperatures of 410-780 degrees C and fast neutron fluences of 0.02-9.0 x 10(25) n/m(2), E > 0.1 MeV, 0.0039-1.76 displacements per atom (dpa) in tungsten. Tensile tests were performed on the composites, and the fracture surfaces were analyzed with scanning electron microscopy. Before irradiation, the tungsten layers had brittle cleavage failure, but the overall composite had 15.5% elongation at 22 degrees C. After only 0.0039 dpa this was reduced to 7.7% elongation, and no ductility was observed after 0.2 dpa at all irradiation temperatures when tensile tested at 22 degrees C. For elevated temperature tensile tests after irradiation, the composite only had ductile failure at temperatures where the tungsten was delaminating or ductile. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据