TY - JOUR
T1 - Microstructural development of tungsten and tungsten-rhenium alloys due to neutron irradiation in HFIR
AU - Fukuda, Makoto
AU - Yabuuchi, Kiyohiro
AU - Nogami, Shuhei
AU - Hasegawa, Akira
AU - Tanaka, Teruya
N1 - Funding Information:
The post-irradiation experiments (PIE) were carried out at the International Research Center for Nuclear Materials Science of the Institute for Materials Research, Tohoku University, Japan. The authors thank Dr. T. Toyama, Dr. M. Hatakeyama, Mr. M. Narui, Mr. M. Yamazaki, and the IMR staff for their assistance with the PIE. This work was supported by the Japan-US collaboration research programs, JUPITER-II and TITAN. This work was supported by JSPS KAKENHI Grant Number 24246151 .
PY - 2014/12
Y1 - 2014/12
N2 - The microstructural development of pure tungsten (W) and tungsten-rhenium (Re) alloys due to neutron irradiation in the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory, TN, USA, was investigated in this work. The irradiation conditions were ∼1 displacements per atom (dpa) at 500 and 800 °C. After the neutron irradiation, microstructural observations were performed using a transmission electron microscope (TEM). Large amounts of precipitates identified as sigma- and chi-phases were observed in not only the W-Re alloys but also in the pure W after the neutron irradiation. The precipitates observed in the pure W were coarse and larger than those in the W-Re alloys. This was considered to be caused by the transmutation products of W and Re, namely, Re and osmium (Os), respectively, under irradiation in the HFIR with a higher contents of thermal neutron flux.
AB - The microstructural development of pure tungsten (W) and tungsten-rhenium (Re) alloys due to neutron irradiation in the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory, TN, USA, was investigated in this work. The irradiation conditions were ∼1 displacements per atom (dpa) at 500 and 800 °C. After the neutron irradiation, microstructural observations were performed using a transmission electron microscope (TEM). Large amounts of precipitates identified as sigma- and chi-phases were observed in not only the W-Re alloys but also in the pure W after the neutron irradiation. The precipitates observed in the pure W were coarse and larger than those in the W-Re alloys. This was considered to be caused by the transmutation products of W and Re, namely, Re and osmium (Os), respectively, under irradiation in the HFIR with a higher contents of thermal neutron flux.
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U2 - 10.1016/j.jnucmat.2014.08.002
DO - 10.1016/j.jnucmat.2014.08.002
M3 - Article
AN - SCOPUS:84907911178
VL - 455
SP - 460
EP - 463
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
IS - 1-3
ER -