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Ikeda, Shugo; Sakai, Hironori; Aoki, Dai*; Homma, Yoshiya*; Yamamoto, Etsuji; Nakamura, Akio; Shiokawa, Yoshinobu; Haga, Yoshinori; Onuki, Yoshichika
Journal of the Physical Society of Japan, 75(Suppl.), p.116 - 118, 2006/08
no abstracts in English
Ueno, Fumiyoshi; Nagae, Yuji*; Nemoto, Yoshiyuki; Miwa, Yukio; Takaya, Shigeru*; Hoshiya, Taiji*; Tsukada, Takashi; Aoto, Kazumi*; Ishii, Toshimitsu; Omi, Masao; et al.
JAERI-Research 2005-023, 132 Pages, 2005/09
JAERI and JNC have started a JAERI-JNC joint research program in fiscal year 2003, which has been aimed for efficient progress and synergistic effect on the research activities in both Institutes. This study has been chosen one of the joint research themes because it has been our common objective in the field of structural materials of FBR and LWR components. The purpose of the study is to clarify damage mechanism of structural materials used under irradiation, and then to develop the methods for damage evaluation and detection in earlier stage of progressing process of damage. In fiscal year 2004 and 2005, micro-corrosion measurement, electrochemical corrosion test and leakage magnetic flux density measurement apparatuses were developed and equipped in two hot facilities and irradiated and unirradiated crept specimens, irradiated high purity model austenitic stainless alloys were also prepared and applied to this study. These apparatuses and specimens were used for damage evaluation, and these feasibilities for nuclear power plant materials were studied.
Carty, G. J.*; Machida, Masahiko; Hampshire, D. P.*
Physical Review B, 71(14), p.144507_1 - 144507_9, 2005/04
Times Cited Count:13 Percentile:49.91(Materials Science, Multidisciplinary)no abstracts in English
Hoshiya, Taiji*; Ueno, Fumiyoshi; Takaya, Shigeru*; Nagae, Yuji*; Nemoto, Yoshiyuki; Miwa, Yukio; Aoto, Kazumi*; Tsukada, Takashi; Abe, Yasuhiro*; Nakamura, Yasuo*; et al.
JAERI-Research 2004-016, 53 Pages, 2004/10
Japan Nuclear Cycle Development Institute (JNC) and Japan Atomic Energy Research Institute (JAERI) have started a JNC-JAERI united research program cooperatively in 2003, which has been aimed for efficient progress and synergistic effect on the research activities of both Institutes in order to lead the facing task of unification between JNC and JAERI. This study has been chosen one of the united research themes, and the purpose of it is to clarify damage mechanism of structural materials under irradiation, and then to develop the methods for damage evaluation and detection in earlier stage of progressing process of damage. In fiscal year 2003, magnetic flux density distribution (JNC) and micro-corrosion (JAERI) measurement apparatus were newly developed and equipped in Hot Facilities in two Institutes, respectively. These apparatus were designed and produced in consideration of radiation resistance and remote-controlled operation to equip in hot cells. We will start the study on neutron irradiation damage by employing the two apparatus as the next step.
Ikeda, Shugo; Okubo, Tomoyuki*; Inada, Yoshihiko*; Tokiwa, Yoshifumi; Kaneko, Koji; Matsuda, Tatsuma; Yamamoto, Etsuji; Haga, Yoshinori; Onuki, Yoshichika
Journal of Physics; Condensed Matter, 15(28), p.S2015 - S2018, 2003/07
Times Cited Count:6 Percentile:35.59(Physics, Condensed Matter)no abstracts in English
Ishida, Takekazu*; Kitamura, Kentaro*; Okuda, Kiichi*; Asaoka, Hidehito
Journal of the Physical Society of Japan, 70(7), p.2110 - 2113, 2001/07
Times Cited Count:3 Percentile:27.48(Physics, Multidisciplinary)no abstracts in English
Zhukov, A. A.*; Kokkaliaris, S.*; de Groot, P. A. J.*; Jansen, A. G. M.*; Mossang, E.*; Asaoka, Hidehito; Wolf, T.*; Gagnon, R.*; Taillefer, L.*
Physica C, 341-348(Part2), p.1027 - 1030, 2000/11
no abstracts in English
Ara, Katsuyuki;
Nihon Oyo Jiki Gakkai-Shi, 20(3), p.743 - 749, 1996/00
no abstracts in English
Ara, Katsuyuki; ; ; Sakasai, Kaoru
Proceedings of 8th International Conference on Pressure Vessel Technology (ICPVT-8), 1, p.183 - 189, 1996/00
no abstracts in English
; *; Ara, Katsuyuki; ; A.Gilanyi*; Uesaka, Mitsuru*; Miya, Kenzo*
MAG-95-138, 0, p.61 - 68, 1995/11
no abstracts in English
Sakasai, Kaoru; Ara, Katsuyuki; Ito, Hirokuni; Kishimoto, Maki; Katagiri, Masaki
Review of Scientific Instruments, 65(5), p.1657 - 1662, 1994/05
Times Cited Count:2 Percentile:36.9(Instruments & Instrumentation)no abstracts in English
; ; ;
JAERI-M 86-181, 89 Pages, 1986/12
no abstracts in English
Wakai, Eiichi; Noto, Hiroyuki*; Shibayama, Tamaki*; Nakagawa, Yuki*; Ishida, Taku*; Makimura, Shunsuke*; Wakui, Takashi; Furuya, Kazuyuki*; Ando, Masami*
no journal, ,
In the fields of energy, nuclear power, high-energy accelerator target systems, nuclear fusion, and biology, radiation causes degradation of materials and equipment, and thus it is expected to create new materials with high durability and superior functionality. In this study, for Fe-, Ti-, and W-based high-entropy alloys (HEA) composed of low activation elements (Ni and Co free), Fe-based alloys were prepared by radio frequency melting, Ti-based alloys by cold crucible levitation melting, and W-based alloys by arc melting using metal powders. These materials were tested by X-ray diffraction, microstructural observation, hardness measurement, magnetic measurement, electrical resistivity measurement, scanning transmission electron microscope STEM (or TEM, SEM) and energy dispersive X-ray spectroscopy, ultrasonic measurement, and hot isostatic pressing (HIP) method. These HEAs were found to be much harder than normal alloys, and in Fe-based HEAs, the magnetic properties and related microstructural analysis showed that they have interesting characteristics such as micro magnetic domain structures. In particular, for Fe- and W-based HEAs, the changes in crystal structure, orientation, and internal microstructure caused by HIP treatment and the accompanying effects of high temperature and pressure have been found to have a significant effect on magnetic properties and material strength properties.