Effect of self-ion irradiation on hardening and microstructure of tungsten
| Autor: | Kiyohiro Yabuuchi, Hiroyasu Tanigawa, Kazumi Ozawa, Makoto Fukuda, H. Usami, Akira Hasegawa, Shuhei Nogami, Taehyun Hwang |
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| Rok vydání: | 2016 |
| Předmět: |
Nuclear and High Energy Physics
Materials science Self-ion irradiation Materials Science (miscellaneous) chemistry.chemical_element macromolecular substances 02 engineering and technology Tungsten Tungsten–rhenium alloy 01 natural sciences Focused ion beam 0103 physical sciences Nanoindentation hardness Irradiation Composite material Microstructure FOIL method 010302 applied physics fungi Metallurgy Nanoindentation 021001 nanoscience & nanotechnology lcsh:TK9001-9401 Nuclear Energy and Engineering chemistry Transmission electron microscopy Hardening (metallurgy) lcsh:Nuclear engineering. Atomic power 0210 nano-technology |
| Zdroj: | Nuclear Materials and Energy, Vol 9, Iss C, Pp 430-435 (2016) |
| ISSN: | 2352-1791 |
| DOI: | 10.1016/j.nme.2016.06.005 |
| Popis: | The irradiation hardening and microstructures of pure W and W – 3%Re for up to 5.0 dpa by self-ion irradiation were investigated in this work. The ion irradiation was conducted using 18 MeV W6+ at 500 and 800 °C. A focused ion beam followed by electro-polishing was used to make thin foil specimens for transmission electron microscope observations. Dislocation loops were observed in all the irradiated samples. Voids were observed in all of the specimens except the W–3%Re irradiated to 0.2 dpa. The hardness was measured by using nanoindentation. The irradiation hardening was saturated at 1.0 dpa for pure W. In the case of W – 3%Re, the irradiation hardening showed a peak at 1.0 dpa. The correlation between the microstructure and hardening was investigated. |
| Databáze: | OpenAIRE |
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