Výsledky vyhledávání - "Takumi Terachi"

On the role of intergranular nanocavities in long-term stress corrosion cracking of Alloy 690

Autor: Philip J. Withers, Takuyo Yamada, Phani Karamched, Takumi Terachi, Zhao Shen, Koji Arioka, Shengchuan Wu, Naganand Saravanan, Edmund Tarleton, Edward Roberts, David E.J. Armstrong, Sergio Lozano-Perez

The life extension of nuclear power plants beyond 60-years relies on the integrity of the steam generator tubes during the extended life. Alloy 690 steam generator tubes have been generally believed to be resistant to stress corrosion cracking (SCC)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6ce122a9d2947623a0ea79522af98b7
https://ora.ox.ac.uk/objects/uuid:479299a4-49ea-4d71-8d92-e1beb64c9e19

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PWR secondary water chemistry guidelines in Japan - Purpose and technical background

Autor: Yusa Muroya, Yasuhiko Shoda, Takumi Terachi, Takao Nishimura, Shunsuke Uchida, Hirotaka Kawamura, Yosuke Katsumura, Takayuki Mizuno, Hideo Hirano, Yasuo Tsuzuki, Ryuji Umehara

Publikováno v: Progress in Nuclear Energy. 114:121-137

In the more than 40 years of operational history of pressurized water reactors (PWRs) in Japan, sustainable development of water chemistry technologies has resulted in the world's highest secondary system component integrity; additionally, secondary

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d88ddc32fe0b5a1f9f652e49e704b17b
https://doi.org/10.1016/j.pnucene.2019.01.027

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BWR water chemistry guidelines and PWR primary water chemistry guidelines in Japan – Purpose and technical background

Autor: Takumi Terachi, Hirotaka Kawamura, Shunsuke Uchida, Takao Nishimura, Junichi Takagi, Yasuo Tsuzuki, Takayuki Mizuno, Makoto Nagase, Naoshi Usui, Y. Katsumura, Yasuhiko Shoda, Hideaki Kitajima, Hideo Hirano, Hidehiro Urata

Publikováno v: Nuclear Engineering and Design. 309:161-174

After 40 years of light water reactor (LWR) operations in Japan, the sustainable development of water chemistry technologies has aimed to ensure the highest coolant system component integrity and fuel reliability performance for maintaining LWRs in t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::25f13591e5982420dbbb68ab21943f62
https://doi.org/10.1016/j.nucengdes.2016.08.029

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Investigation of Hydrogen Behavior in Relation to the PWSCC Mechanism in Alloy TT690

Autor: Koji Arioka, Nobuo Totsuka, Takuyo Yamada, Takumi Terachi

Publikováno v: The Minerals, Metals & Materials Series ISBN: 9783030046385

The mechanism of primary water stress corrosion cracking (PWSCC) in Alloy TT690 was studied from the viewpoint of the influence of hydrogen behavior and cavity formation. Four parameters were examined: cavity formation at crack tips; deformation in t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::93cfb2f8ebf6902126190ef4fa3da05e
https://doi.org/10.1007/978-3-030-04639-2_7

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Nanoscale characterisation of grain boundary oxidation in cold-worked stainless steels

Autor: Takuyo Yamada, Sergio Lozano-Perez, Karen Kruska, David W. Saxey, Takumi Terachi, George Davey Smith

Atom-probe tomography was employed to characterise specimens containing the oxidised part of a grain boundary from a 304 stainless steel coupon specimen exposed to simulated PWR primary water. A TEM foil containing part of the same oxidised grain bou

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b838e09dbdb271b5ff4c9424bc1487cd
https://doi.org/10.1016/j.corsci.2012.06.030

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Development of visualization method of grain boundaries in stainless steel by using white X-ray micro-beam and image detector

Autor: Takumi Terachi, Koji Arioka, Takuya Fukumura, Takuyo Yamada, Tamotsu Hashimoto, Kentaro Kajiwara, Masugu Sato, Ichiro Hirosawa

Publikováno v: physica status solidi (a). 206:1838-1841

A visualization method of grain boundaries in a polycrystal was developed at BL28B2 in SPring-8. By combining a scanning type white X-ray micro-diffraction system with high-energy synchrotron X-rays we non-destructively obtained images to visualize g

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d76702feebc107cc9c95f91fc889b6d5
https://doi.org/10.1002/pssa.200881610

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Microstructural Characterization of SCC Crack Tip and Oxide Film for SUS 316 Stainless Steel in Simulated PWR Primary Water at 320°C

Autor: Koji Arioka, Takumi Terachi, Katsuhiko Fujii

Publikováno v: Journal of Nuclear Science and Technology. 42:225-232

Recent studies on stress corrosion cracking (SCC) behaviors of austenitic stainless steels in hydrogenated high-temperature water show that low potential SCC (LPSCC) can occur on cold-worked SUS 316 stainless steel (hereinafter, 316SS). In this study

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d01df40a65fc2b72ddef550e2cbc7e85
https://doi.org/10.1080/18811248.2005.9726383

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