Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Oba, Yojiro; Morooka, Satoshi; Oishi, Kazuki*; Suzuki, Junichi*; Tsuchiyama, Toshihiro*
ISIJ International, 62(1), p.173 - 178, 2022/01
Times Cited Count:1 Percentile:34.75(Metallurgy & Metallurgical Engineering)Oba, Yojiro*; Morooka, Satoshi; Oishi, Kazuki*; Suzuki, Junichi*; Takata, Shinichi; Sato, Nobuhiro*; Inoue, Rintaro*; Tsuchiyama, Toshihiro*; Gilbert, E. P.*; Sugiyama, Masaaki*
Journal of Applied Crystallography, 50(2), p.334 - 339, 2017/04
Times Cited Count:3 Percentile:29.42(Chemistry, Multidisciplinary)Oba, Yojiro; Morooka, Satoshi; Oishi, Kazuki*; Suzuki, Junichi*; Tsuchiyama, Toshihiro*; Gilbert, E. P.*
Proceedings of 5th International Symposium on Steel Science (ISSS 2017), p.151 - 154, 2017/00
Small-angle neutron scattering and neutron diffraction are powerful tools to characterize microstructures in steels. Several new experimental techniques such as Bragg edge transmission analysis and energy-resolved small-angle neuron scattering have been recently developed with the opening of new-generation pulsed neutron sources. In this talk, the combined use of these diffraction and small-angle scattering techniques are discussed for the total characterization of the microstructures in steels.
Oba, Yojiro*; Morooka, Satoshi; Oishi, Kazuki*; Sato, Nobuhiro*; Inoue, Rintaro*; Adachi, Nozomu*; Suzuki, Junichi*; Tsuchiyama, Toshihiro*; Gilbert, E. P.*; Sugiyama, Masaaki*
Journal of Applied Crystallography, 49(5), p.1659 - 1664, 2016/10
Times Cited Count:12 Percentile:67.1(Chemistry, Multidisciplinary)Inaguma, Yoshiyuki*; Tanaka, Kie*; Tsuchiya, Takeshi*; Mori, Daisuke*; Katsumata, Tetsuhiro*; Oba, Tomonori*; Hiraki, Koichi*; Takahashi, Toshihiro*; Saito, Hiroyuki
Journal of the American Chemical Society, 133(42), p.16920 - 16929, 2011/09
Times Cited Count:83 Percentile:85.64(Chemistry, Multidisciplinary)Oba, Toshihiro; Suetsugu, Hidehiko*; Yano, Masaya*; Kato, Chiaki; Yanagihara, Takao
JAERI-Tech 2002-082, 47 Pages, 2003/01
The demonstration test for evaluating reliability of the acid recovery evaporator at Rokkasho Reprocessing Plant has been carried out at JAERI. For the nondestructive measurement of the thickness of heat transfer tubes of the acid recovery evaporator in corrosion test, we have developed thickness measurement apparatus for heat transfer tubes by ultrasonic immersion method with high resolution. The ultrasonic prove in a heat transfer tube can be moved vertically and radially. The results obtained by this apparatus coincident well with those obtained by a destructive method using an optical microscope.
Ishikawa, Kazuyoshi; Kikuchi, Taiji; Isozaki, Futoshi*; Inoue, Hiromi; Oba, Toshihiro; Matsui, Yoshinori; Saito, Takashi; Nakano, Junichi; Tsuji, Hirokazu
JAERI-Tech 2002-061, 69 Pages, 2002/08
Study of irradiation assisted stress corrosion cracking (IASCC) is an important subject for the plant life assessment and extension of the light water reactors (LWRs). It is necessary that initiation mechanism of IASCC should be made clear under combined effect of irradiation, environment and stress in order to understand IASCC phenomena. Under the existing circumstance, Saturated Temperature Capsule (SATCAP) were fabricated for the irradiation test of IASCC studies in Japan Material Testing Reactor (JMTR). SATCAP is the irradiation rig to irradiate materials in high pressure water of controlled chemistry and temperature simulating Boiling water reactors (BWRs) core environment from the new water feelding system of out-of-pile. This report describes (1) investigation of technical problems for the design and fabrication of SATCAP, (2) the tests results of the problems and (3) fabrication and inspection of SATCAP.
Oba, Toshihiro; Inoue, Hiromi*; Kikuchi, Taiji; Taka, Isamu; Chiba, Masaaki; Ishikawa, Kazuyoshi; Tsuda, Kazumi*; Takeyama, Tomonori; Isozaki, Futoshi*; Terunuma, Isao*; et al.
NIFS-MEMO-36, p.121 - 124, 2002/06
no abstracts in English
Oba, Toshihiro; Kikuchi, Taiji; Taka, Isamu; Isozaki, Futoshi*; Chiba, Masaaki; Ishikawa, Kazuyoshi; Inoue, Hiromi*; Terunuma, Isao*; Sawabe, Masaki*; Tsuda, Kazumi*; et al.
JAERI-Tech 2001-067, 29 Pages, 2001/11
no abstracts in English
Oba, Toshihiro; Yanagihara, Takao; Kato, Chiaki; Hamada, Shozo
JAERI-Tech 2001-059, 36 Pages, 2001/09
The demonstration test for evaluating reliability of the acid recovery evaporator at Rokkasho Reprocessing Plant has been carried out at JAERI. For the nondestructive mesurement of the thickness of heat transfer tubes in the acid recovery evaporator and short tubes used in corrosion test, we have developed ultra sonic thickness measuring apparatus using immersion method with high resolution. This apparatus can measure and record tube thickness automatically with a personal computer. The results obtained by this apparatus are coincident with the results obtained by a destructive method using an optical microscope.
Takeyama, Tomonori; Chiba, Masaaki; Isozaki, Futoshi*; Amezawa, Hiroo; Itabashi, Yukio; Kikuchi, Taiji; Otabe, Yoshikiyo*; Hirata, Yuji*; Taka, Isamu; Oba, Toshihiro
JAERI-Tech 2001-024, 32 Pages, 2001/03
no abstracts in English
Maeda, Akio; Oba, Toshihiro; Kikuchi, Hiroyuki; Shibata, Katsuyuki
JAERI-Tech 2001-003, 48 Pages, 2001/02
no abstracts in English
; Shibata, Katsuyuki; Onizawa, Kunio; ; Oba, Toshihiro; Miyazono, S.
JAERI-M 88-130, 120 Pages, 1988/07
no abstracts in English
Onizawa, Kunio; Shibata, Katsuyuki; Yasuda, Yuji; Oba, Toshihiro; ; Miyazono, S.
JAERI-M 87-077, 83 Pages, 1987/06
no abstracts in English
Yasuda, Yuji; Shibata, Katsuyuki; Onizawa, Kunio; ; Oba, Toshihiro; Miyazono, S.
JAERI-M 87-068, 111 Pages, 1987/05
no abstracts in English
Morooka, Satoshi; Oba, Yojiro*; Tsuchiyama, Toshihiro*; Akama, Daichi*; Gilbert, E. P.*
no journal, ,
no abstracts in English
Oba, Yojiro; Morooka, Satoshi; Oishi, Kazuki*; Suzuki, Junichi*; Tsuchiyama, Toshihiro*; Gilbert, E. P.*
no journal, ,
Since microstructures of steels are closely related to their mechanical properties, the characterization of the microstructures is important. Neutron scattering techniques are useful for the characterization of the steel and widely utilized. On the other hand, recent development of the neutron transmission analysis enables the characterization of the microstructure using the neutron transmission similar to the conventional neutron scattering measurements. The possibilities of advanced experiments using neutron scattering and transmission measurements are discussed for the characterization of the microstructure.
Oba, Yojiro; Morooka, Satoshi; Tsuchiyama, Toshihiro*; Oishi, Kazuki*; Suzuki, Junichi*
no journal, ,
no abstracts in English