JJAP Conf. Proc. 2, 011101 (2014) doi:10.7567/JJAPCP.2.011101
Cu precipitates in hydrogen ion irradiated Fe–0.3%Cu alloy investigated by positron annihilation spectroscopy
- 1Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
- 2Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, China
- Received March 17, 2014
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The formation of Cu precipitates in Fe–0.3%Cu binary model alloy after hydrogen ion irradiation at 400 °C was investigated by positron annihilation spectroscopy using a slow positron beam. In order to study the effect of elevated temperature on the Cu precipitates, annealing treatment at 400 °C in Fe–0.3%Cu alloy was also investigated. The S-parameters of specimens increased with increasing irradiation dose, especially in the damage peak region. H+ implantation produced a large number of vacancy-type defects in Fe–0.3%Cu alloy. Compared to the unirradiated samples, the irradiated specimens show an overall major increase in the W parameter values. The experimental results indicate that Cu precipitates formed easily under a low irradiation dose at elevated temperature. No obvious Cu precipitates formed when unirradiated Fe–0.3%Cu alloy was annealed for 2 h at 400 °C.
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