TY - JOUR
T1 - Effects of transmutation elements on the microstructural evolution and electrical resistivity of neutron-irradiated tungsten
AU - Tanno, T.
AU - Hasegawa, A.
AU - He, J. C.
AU - Fujiwara, M.
AU - Satou, M.
AU - Nogami, S.
AU - Abe, K.
AU - Shishido, T.
N1 - Funding Information:
This work was supported by the Institute for Materials Research (IMR) at Tohoku University. Post-irradiation experiments were carried out at the International Research Center for Nuclear Materials Science and the Laboratory of Alpha-Ray Emitters of IMR. The authors thank Mr K. Obara for arc-melting processes, and Professor Y. Satoh and Dr N. Nita (presently at Kobelco Research Institute) at IMR for TEM observations.
PY - 2009/4/30
Y1 - 2009/4/30
N2 - 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.
AB - 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.
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U2 - 10.1016/j.jnucmat.2008.12.091
DO - 10.1016/j.jnucmat.2008.12.091
M3 - Article
AN - SCOPUS:64749088861
VL - 386-388
SP - 218
EP - 221
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
IS - C
ER -