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Journal Articles

Effect of solute elements in Ni alloys on blistering under He$$^{+}$$ D$$^{+}$$ ion irradiation

Wakai, Eiichi; Ezawa, Tadashi*; Takenaka, Tsuyoshi*; Imamura, Junko*; Tanabe, Tetsuo*; Oshima, Ryuichiro*

Journal of Nuclear Materials, 367-370(1), p.478 - 482, 2007/08

 Times Cited Count:6 Percentile:44.88(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Local modification of hardness in FeCu alloys by using swift heavy ion irradiation

Nakagawa, Sho*; Hori, Fuminobu*; Chimi, Yasuhiro; Ishikawa, Norito; Kitagawa, Michiharu*; Oshima, Ryuichiro*; Tobita, Toru; Taniguchi, Ryoichi*; Suzuki, Masahide; Iwase, Akihiro*

Nuclear Instruments and Methods in Physics Research B, 257(1-2), p.397 - 401, 2007/04

 Times Cited Count:4 Percentile:36.92(Instruments & Instrumentation)

Supersaturated Fe-1.2wt.%Cu alloys were irradiated with 200-MeV Xe and 200-MeV Au ions at elevated temperatures. To make an irradiated region and an unirradiated region in a specimen, a masking plate was put on the specimen during the irradiation. After the irradiation, the hardness was measured by using a conventional microhardness tester or a nano-indenter. We have found that the hardness only in irradiated region increases by the irradiation. The boundary of irradiated and unirradiated regions can be clearly identified by the difference in hardness. The present result implies that swift heavy ion irradiation can be used for the local modification of hardness in supersaturated alloys.

Journal Articles

Effect of solute atoms on swelling in Ni alloys and pure Ni under He$$^{+}$$ ion irradiation

Wakai, Eiichi; Ezawa, Tadashi*; Imamura, Junko*; Takenaka, Tsuyoshi*; Tanabe, Tetsuo*; Oshima, Ryuichiro*

Journal of Nuclear Materials, 307-311(Part.1), p.367 - 373, 2002/12

 Times Cited Count:19 Percentile:74.81(Materials Science, Multidisciplinary)

no abstracts in English

Oral presentation

Cluster ion irradiation effect on Si single cristal and Fe-Rh alloy

Iwase, Akihiro*; Zushi, Yoshihiro*; Nakatani, Tomoya*; Fujita, Naoki*; Hori, Fuminobu*; Oshima, Ryuichiro*; Seki, Shuhei*; Saito, Yuichi; Chiba, Atsuya; Adachi, Masahiro; et al.

no journal, , 

no abstracts in English

Oral presentation

Cu atom clustering and changes in electrical conductivity and hardness in FeCu alloys irradiated with high-energy particles

Ishikawa, Norito; Okamoto, Yoshihiro; Hirao, Norie*; Nakagawa, Sho*; Iwase, Akihiro*; Hori, Fuminobu*; Ono, Hirotaka*; Kitagawa, Michiharu*; Oshima, Ryuichiro*

no journal, , 

In reactor pressure vessel, hardening due to irradiation is partly originated from Cu precipitation promoted by irradiation. In this study, development of evaluation methodology for embrittlement phenominon is the main objective, and it has been found that hardness change due to irradiation correlates well with accompanied electrical resistivity change.

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