Micro-structure and micro-hardness of ODS steels after ion irradiation
| Autor: | C.Z. Yu, Naoyuki Hashimoto, Kiyoyuki Shiba, Somei Ohnuki, C. Liu, S. Jitsukawa, Masami Ando |
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| Rok vydání: | 2011 |
| Předmět: |
Nuclear and High Energy Physics
Materials science Metallurgy technology industry and agriculture Oxide Indentation hardness Ion chemistry.chemical_compound Nuclear Energy and Engineering chemistry Transmission electron microscopy Particle General Materials Science Irradiation Dissolution Radiation resistance |
| Zdroj: | Journal of Nuclear Materials. 417:270-273 |
| ISSN: | 0022-3115 |
| Popis: | The radiation-hardening of oxide dispersion strengthened (ODS) alloys was examined using ion irradiation and nano-indentation. In this work, three ODS steels were irradiated in the TIARA facility at JAEA with 10.5 MeV Fe 3+ ions up to a dose of 20 dpa at 250 and 380 °C. Micro-hardness measurements were carried out on the ion-irradiated specimens with ultra-low load indention. Micro-structures were investigated by transmission electron microscopy (TEM) to examine the contribution of various types of defects to the radiation-hardening. All three steels showed increases in the hardness after the ion irradiation, and F82H-ODS showed the lowest radiation-hardening, which suggests that F82H-ODS has the better radiation resistance. Small amounts of particle dissolution was also confirmed in all of the steels after the irradiation. |
| Databáze: | OpenAIRE |
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