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Journal Articles

Mechanical and thermal properties of Zr-B and Fe-B alloys

Sun, Y.*; Abe, Yuta; Muta, Hiroaki*; Oishi, Yuji*

Journal of Nuclear Science and Technology, 57(8), p.917 - 925, 2020/08

 Times Cited Count:4 Percentile:54.77(Nuclear Science & Technology)

JAEA Reports

Mechanical property of superplastic-deformed ceramics by micro-indentation method

Shibata, Taiju; Ishihara, Masahiro; Takahashi, Tsuneo*; Motohashi, Yoshinobu*; Hayashi, Kimio

JAERI-Research 2001-024, 24 Pages, 2001/03

JAERI-Research-2001-024.pdf:6.25MB

no abstracts in English

Journal Articles

Effects of superplastic deformation on dynamic hardness and young's modulus of 3Y-TZP

Shibata, Taiju; Ishihara, Masahiro; Takahashi, Tsuneo*; Motohashi, Yoshinobu*

Proceedings of Asian Pacific Conference on Fracture and Strength '01(APCFS '01) and International Conference on Advanced Technology in Experimental Mechanics '01 (ATEM '01), p.894 - 898, 2001/00

no abstracts in English

Journal Articles

Nanoindentation behavior of a two-dimensional carbon-carbon composite for nuclear applications

Kanari, Moriyasu*; *; ; Eto, Motokuni

Carbon, 35(10-11), p.1429 - 1437, 1997/00

 Times Cited Count:38 Percentile:81.36(Chemistry, Physical)

no abstracts in English

Journal Articles

Development of a method for measuring residual strain based on small deformation characteristics of graphite materials

Ishihara, Masahiro; Oku, Tatsuo*

Nihon Kikai Gakkai Rombunshu, A, 62(602), p.2305 - 2309, 1996/00

no abstracts in English

Oral presentation

Mechanical property evaluation on irradiated materials with gradient damage distribution

Sakai, Tomoki*; Wakui, Takashi; Saito, Shigeru; Futakawa, Masatoshi; Mori, Kotaro*

no journal, , 

One of dominant factors to determine the lifetime of components used under the high-radiation environment is the radiation damage of materials and then understanding of the radiation damage is very important. Although ion irradiation has been conducted as the method simulating the radiation damage, the damaged area is limited to the surface layer of the specimen and has the gradient damage distribution. Micro-indentation tests with a Berkovich indenter were conducted in irradiated and unirradiated area on ion irradiated specimens and the micro-hardness was estimated from load and depth curve. The micro-hardness increased by the irradiation. The micro-hardness increased further under the irradiation condition that hydrogen ion and helium ion were added. On the other hand, the micro-hardness decreased with increasing irradiated temperature.

Oral presentation

Mechanical property evaluation on irradiated materials with gradient damage distribution using micro-indentation tests

Sakai, Tomoki*; Wakui, Takashi; Saito, Shigeru; Futakawa, Masatoshi; Mori, Kotaro*

no journal, , 

Radiation damage to materials is a factor that determines the lifetime of equipment used in high-radiation environments, and it is essential to understand the radiation damage. Ion irradiation has been used as a method of simulating irradiation damage, but the damage area is limited to the thin surface layer and has a gradient damage distribution. Therefore, micro-indentation test was applied as the method to investigating the mechanical properties and then the hardness in irradiated and unirradiated area. Increase of hardness due to irradiation was confirmed and the hardness increased by adding light ion. On the other hand, amount of increase in hardness decreased with increasing the irradiation temperature.

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