Effects of transmutation elements on the microstructural evolution and electrical resistivity of neutron-irradiated tungsten
| Autor: | Manabu Satou, Toetsu Shishido, Takashi Tanno, K. Abe, M. Fujiwara, Akira Hasegawa, Shuhei Nogami, Jian Chao He |
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| Rok vydání: | 2009 |
| Předmět: |
Nuclear and High Energy Physics
Materials science Nuclear transmutation Metallurgy Radiochemistry chemistry.chemical_element Rhenium Tungsten Nuclear Energy and Engineering chemistry Electrical resistivity and conductivity Vickers hardness test Hardening (metallurgy) General Materials Science Neutron Irradiation |
| Zdroj: | Journal of Nuclear Materials. :218-221 |
| ISSN: | 0022-3115 |
| DOI: | 10.1016/j.jnucmat.2008.12.091 |
| Popis: | During fusion reactor operation, transmutation elements such as rhenium (Re) and osmium (Os) are produced from tungsten (W) upon neutron irradiation. Thus, the pure W becomes W–Re or W–Re–Os alloys and its physical properties gradually change. The irradiation hardening, microstructural changes, and physical properties of these transmutation elements of W are here investigated. Tungsten-based model alloys are fabricated and neutron irradiation is performed in the JOYO fast test reactor. The irradiation dose and temperature are 0.17–1.54 dpa and 400–750 °C, respectively. Vickers hardness measurements, microstructural observations, and electrical resistivity measurements are subsequently performed. The effects of the microstructural evolution on the irradiation hardening and electrical resistivity are discussed. |
| Databáze: | OpenAIRE |
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