期刊
JOURNAL OF NUCLEAR MATERIALS
卷 553, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jnucmat.2021.153009
关键词
Tungsten; Potassium doping; Alloying by rhenium; Neutron irradiation; Embrittlement
资金
- Euratom research and training programme 2014-2018 [633053]
- Euratom research and training programme 2019-2020 [633053]
- JSPS KAKENHI in Japan [15KK0224, 26289351, 24246151, 17H01364, 18H01196]
- National Institute for Fusion Science (NIFS) Collaboration Research program in Japan [NIFS11K0BF019]
- Grants-in-Aid for Scientific Research [18H01196, 26289351, 15KK0224, 17H01364] Funding Source: KAKEN
Tungsten-based materials with potassium doping and alloying by rhenium have been developed in Japan to improve thermo-mechanical properties and tolerance to neutron-irradiation effects over the past decade. The modified materials show higher recrystallization temperature threshold, increased strength and ductility, and reduced ductile-to-brittle transition temperature compared to pure tungsten.
Tungsten (W) based materials for fusion reactor applications have been developed in Japan for the last decade to improve thermo-mechanical properties and tolerance with respect to neutron-irradiation effects. Potassium (K) doping for dispersion strengthening and alloying by rhenium (Re) for solid solute softening and strengthening were applied to W fabricated by powder metallurgy. Thereby modified W materials, e.g. K-doped W and K-doped W-3%Re, demonstrated a higher recrystallization temperature threshold, an increase in strength and ductility, and a reduction in ductile-to-brittle transition temperature (DBTT) compared to pure W in the non-irradiated state. Embrittlement caused by displacement damage and its amplification due to solid transmutation products is expected to be an intrinsic issue of W based materials under neutron irradiation environment inherent to future fusion reactors. In this paper, the effect of K-doping and alloying by Re on the neutron-irradiation-induced embrittlement of W was investigated at neutron fluence causing a considerable amount of solid transmutation products.& nbsp; (c) 2021 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