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SPECIAL TOPIC—Ion beam modification of materials and applications |
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Effect of tellurium (Te4+) irradiation on microstructure and associated irradiation-induced hardening |
Hefei Huang(黄鹤飞)1,2,†, Jizhao Liu(刘继召)1,2, Guanhong Lei(雷冠虹)1, Ondrej Muránsky3,4, Tao Wei3, and Mihail Ionescu3 |
1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China; 2 School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China; 3 Australian Nuclear Science and Technology Organisation(ANSTO), Lucas Heights, Sydney, NSW, 2234, Australia; 4 University of New South Wales(UNSW), Kensington, Sydney, NSW, 2052, Australia |
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Abstract The GH3535 alloy samples were irradiated using 15-MeV Te4+ ions at 650 °C to a dose of 0.5, 3.0, 10, and 20 dpa, respectively. The Te atoms distribution and microstructure evolution were examined by electron probe microanalysis (EPMA) and transmission electron microscopy (TEM). The nano-indenter was then used to measure the nano-hardness changes of samples before and after irradiation. TEM results showed the formation of dislocation loops in the irradiated samples. Their mean diameters increase with the increase of irradiation dose and tends to be saturated when irradiation dose exceeds 10 dpa. The ratio of yield strength increments calculated by dispersed barrier hardening (DBH) model is basically consistent with that of nano-hardness increments measured by nano-indenter. In addition, the relationship between the nano-hardness increments and dpa for the GH3535 alloy irradiated by Te ions has been revealed in the study.
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Received: 11 December 2020
Revised: 08 January 2021
Accepted manuscript online: 19 March 2021
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PACS:
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61.80.Lj
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(Atom and molecule irradiation effects)
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61.82.-d
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(Radiation effects on specific materials)
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61.80.Jh
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(Ion radiation effects)
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28.41.Qb
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(Structural and shielding materials)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11975304 and 12022515). |
Corresponding Authors:
Hefei Huang
E-mail: huanghefei@sinap.ac.cn
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Cite this article:
Hefei Huang(黄鹤飞), Jizhao Liu(刘继召), Guanhong Lei(雷冠虹), Ondrej Muránsky, Tao Wei, and Mihail Ionescu Effect of tellurium (Te4+) irradiation on microstructure and associated irradiation-induced hardening 2021 Chin. Phys. B 30 056108
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