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Li, H.*; Liu, Y.*; Zhao, W.*; Liu, B.*; Tominaga, Aki; Shobu, Takahisa; Wei, D.*
International Journal of Plasticity, 165, p.103612_1 - 103612_20, 2023/06
Times Cited Count:2 Percentile:78.7(Engineering, Mechanical)In order to clarify the strength properties of Co-free maraging steel, tensile experiment using high energy synchrotron X-ray diffraction was performed. Diffraction profiles from the martensitic and austenitic phases were obtained, and their strength and width were observed to vary as loading. Analysis of the diffraction profiles showed that the content of martensite in the as-aged material decreased slowly at low stress levels and decreased rapidly at high stress levels. On the other hand, the austenite phase in the as-solution materials was significantly transformed the martensite phase as the stress increased. It was clarified to be responsible for their respective strength properties.
Yamazaki, Yasuhiro*; Shinomiya, Keisuke*; Okumura, Tadaharu*; Suzuki, Kenji*; Shobu, Takahisa; Nakamura, Yuiga*
Quantum Beam Science (Internet), 7(2), p.14_1 - 14_12, 2023/05
Oka, Hiroshi; Tanno, Takashi; Otsuka, Satoshi; Yano, Yasuhide; Kaito, Takeji
Nuclear Materials and Energy (Internet), 16, p.230 - 237, 2018/08
Times Cited Count:4 Percentile:38.58(Nuclear Science & Technology)Sato, Shigeo*; Kuroda, Asumi*; Sato, Kozue*; Kumagai, Masayoshi*; Harjo, S.; Tomota, Yo*; Saito, Yoichi*; Todoroki, Hidekazu*; Onuki, Yusuke*; Suzuki, Shigeru*
Tetsu To Hagane, 104(4), p.201 - 207, 2018/00
Times Cited Count:9 Percentile:44.29(Metallurgy & Metallurgical Engineering)Oka, Hiroshi; Tanno, Takashi; Otsuka, Satoshi; Yano, Yasuhide; Uwaba, Tomoyuki; Kaito, Takeji; Onuma, Masato*
Nuclear Materials and Energy (Internet), 9, p.346 - 352, 2016/12
Times Cited Count:21 Percentile:88.83(Nuclear Science & Technology)Narumi, Kazumasa; Sakai, Seiji; Naramoto, Hiroshi*; Takanashi, Koki
Fullerenes, Nanotubes, and Carbon Nanostructures, 14(2-3), p.429 - 434, 2006/00
no abstracts in English
Tanigawa, Hiroyasu; Sakasegawa, Hideo*; Klueh, R. L.*
Materials Transactions, 46(3), p.469 - 474, 2005/03
Times Cited Count:20 Percentile:73.88(Materials Science, Multidisciplinary)The effects of irradiation on precipitation of reduced-activation ferritic/martensitic steels (RAFs) were investigated, and its impacts on the Charpy impact properties and tensile properties were discussed. It was previously reported that RAFs (F82H-IEA and its heat treatment variant, ORNL9Cr-2WVTa, JLF-1 and 2%Ni doped F82H) shows variety of changes on its ductile-brittle transition temperature (DBTT) and yield stress after irradiation at 573K up to 5dpa. These differences could not be interpreted as an effect of irradiation hardening caused by dislocation loop formation. The precipitation behavior of the irradiated steels was examined by weight analysis, X-ray diffraction analysis and chemical analysis on extraction residues. These analyses suggested that irradiation caused (1) the increase of the amount of precipitates (mainly MC), (2) increase of Cr and decrease of W contained in precipitates, (3) disappearance of MX (TaC) in ORNL9Cr and JLF-1.
Dai, Z.*; Naramoto, Hiroshi; Yamamoto, Shunya; Narumi, Kazumasa; Miyashita, Atsumi
Journal of Physics; Condensed Matter, 11(3), p.913 - 925, 1999/00
Times Cited Count:4 Percentile:28.67(Physics, Condensed Matter)no abstracts in English
Dai, Z.*; Yamamoto, Shunya; Naramoto, Hiroshi; Narumi, Kazumasa; Miyashita, Atsumi
1998 International Conference on Ion Implantation Technology Proceedings, Vol.2, p.1159 - 1162, 1998/06
no abstracts in English
Minato, Kazuo;
Journal of Nuclear Materials, 149, p.233 - 246, 1987/00
Times Cited Count:57 Percentile:97.08(Materials Science, Multidisciplinary)no abstracts in English
*; *; *;
J.Chem.Soc.,Faraday Trans.,2, 81, p.319 - 326, 1985/00
no abstracts in English
JAERI-M 84-060, 32 Pages, 1984/03
no abstracts in English
Niwa, Masakazu; Shimada, Koji; Sueoka, Shigeru; Tamura, Hajimu; Shibata, Kenji
no journal, ,
X-ray diffraction analysis and K-Ar dating were applied for fault gouges in the late Cretaceous Kojaku Granite, Tsuruga Peninsula. The fault gouge includes smectite, 1M type illite, and kaolinite, based on the X-ray diffraction analysis. The K-Ar dating shows approximately 39 to 45 Ma for the 0.1 m size fractions separated from the gouges. The K-Ar ages and the reconstructed cooling history of the granite suggest that the 1M illite was formed at 60 to 110 C (approximately 2 to 4 km in depth for 30 C/km of geothermal gradient).