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Journal Articles

${it In situ}$ TEM observation of growth process of zirconium hydride in zircaloy-4 during hydrogen ion implantation

Shinohara, Yasunari*; Abe, Hiroaki*; Iwai, Takeo*; Sekimura, Naoto*; Kido, Toshiya*; Yamamoto, Hiroyuki; Taguchi, Tomitsugu

Journal of Nuclear Science and Technology, 46(6), p.564 - 571, 2009/06

https://doi.org/10.3327/jnst.46.564
 Times Cited Count：30 Percentile：87.25(Nuclear Science & Technology)

${it In situ}$ observation during hydrogen ion implantation was performed with a TEM installed in an ion accelerator to investigate the growth process of Zr hydride in Zicaloy-4. To clarify the effect of radiation damage, some samples were irradiated with 4 MeV Ni$$^{3+}$$ ions prior to hydrogen implantation. Growth processes of Zr hydrides accompanying the formation of dislocations were observed. The crystallographic relationship between the Zr matrix and Zr hydrides was identical with that found in previous studies: inter- and intragranular hydrides exhibiting a tendency to grow in the $$<$$11$$bar{2}$$0$$>$$ direction. This growth can be attributed to a shear mechanism. In specimens preirradiated with Ni ions, the growth rate of hydrides was suppressed, but the growth direction was not affected by radiation defects. It was also confirmed that the black spots induced by Ni$$^{3+}$$ ion irradiation grew during hydrogen ion implantation, suggesting the formation of hydrides at the defects.

Oral presentation

Ab initio study on plane defects in Zirconium hydrogen solution and hydride

Udagawa, Yutaka; Yamaguchi, Masatake; Abe, Hiroaki*; Asari, Keisuke*; Shinohara, Yasunari*; Murakami, Kenta*; Nakazono, Yoshihisa*; Mihara, Takeshi*; Sawayama, Yohei*; Sekimura, Naoto*; et al.

no journal, , 

no abstracts in English

Oral presentation

Development of metal-coated zircaloy for accident tolerant fuel, 1; Summary and plan of the project

Abe, Hiroaki*; Kano, Sho*; Yang, H.*; Takanabe, Kazuhiro*; Nakayama, Akira*; Chen, Y.*; Yamaguchi, Masatake; Shinohara, Yasunari*; Ogata, Koichi*

no journal, , 

no abstracts in English

Oral presentation

Development of metal-coated zircaloy for accident tolerant fuel, 2; Materials development and radiation effects

Kano, Sho*; Murakami, Kenta*; Yang, H.*; Takanabe, Kazuhiro*; Nakayama, Akira*; Chen, Y.*; Yamaguchi, Masatake; Shinohara, Yasunari*; Ogata, Koichi*; Abe, Hiroaki*

no journal, , 

no abstracts in English

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