Study of the radiation damage effect on Titanium metastable beta alloy by high intensity proton beam
Autor: | M. Tada, Masayuki Hagiwara, David J. Senor, J. F. Martin, Kavin Ammigan, A. Atherthon, M. Cadabeschi, Ramprashad Prabhakaran, A. Fiorentini, Shunsuke Makimura, Eiichi Wakai, David M. Asner, S. Bhadra, A. Konaka, Arun Devaraj, M. Fitton, Danny J. Edwards, Andrew M. Casella, Chris Densham, M. Hartz, Taku Ishida, A. D. Marino, P. Hurh |
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Jazyk: | angličtina |
Rok vydání: | 2018 |
Předmět: |
Nuclear and High Energy Physics
Materials science Proton Materials Science (miscellaneous) Alloy chemistry.chemical_element 02 engineering and technology Atom probe engineering.material 01 natural sciences Molecular physics law.invention law 0103 physical sciences Radiation damage Irradiation 010302 applied physics Titanium alloy 021001 nanoscience & nanotechnology lcsh:TK9001-9401 Nuclear Energy and Engineering chemistry engineering lcsh:Nuclear engineering. Atomic power 0210 nano-technology Beam (structure) Titanium |
Zdroj: | Nuclear Materials and Energy, Vol 15, Iss, Pp 169-174 (2018) |
ISSN: | 2352-1791 |
Popis: | A foil of a metastable β Titanium alloy Ti-15V-3Cr-3Sn-3Al was irradiated at the J-PARC neutrino experimental facility with 1.4 × 1020 30 GeV protons at low temperature (100–130 °C at most), and microstructural characterization and hardness testing were conducted as an initial study on the radiation damage effects of Titanium alloy by the high energy proton beam exposure. Expected radiation damage at the beam center is about 0.06–0.12 displacement per atom. A high density (> 1023 m−3) of a nanometer-sized precipitate was observed by TEM studies, which would be identified as martensite α-phase and athermal ω-phase formed during the solution-treatment process to fabricate metastable β alloy. They did not appear to change substantially after irradiation with protons. In the irradiated specimen, we could not identify an obvious signature of radiation damage distributed along the proton beam profile. Very small, nanometer-scale black dots were present at a low density in the most highly irradiated region, and may be small dislocation loops formed during irradiation. The micro-indentation test indicated that the radiation exposure led to tiny increase in Vickers micro-hardness of ΔHV = 20 at beam center. Atom probe tomography reveals compositional fluctuations that reach a maximum amplitude of 10 at% Ti within a space of |
Databáze: | OpenAIRE |
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