Cu Precipitates in Fe Ion Irradiated Fe-Cu Alloys Studied Using Positron Techniques

16th International Conference on Positron Annihilation

Cao, X.Z.^1 ; Zhang, P.^1 ; Xu, Q.^2 ; Sato, K.^2 ; Tsuchida, H.^3 ; Cheng, G.D.^1 ; Wu, H.B.^1 ; Jiang, X.P.^1 ; Yu, R.S.^1 ; Wang, B.Y.^1 ; Wei, L.^1

Key Laboratory of Nuclear Analysis Techniques, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China^1

Research Reactor Institute, Kyoto University, Osaka 5900494, Japan^2

Quantum Science and Engineering Center, Kyoto University, Uji 6110011, Japan^3

关键词: Cu atoms;    Cu precipitates;    Fe-Cu alloys;    Irradiation dose;    Irradiation-induced defects;    Model alloys;    Positron annihilation technique;    Slow positron beam;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/443/1/012017/pdf
DOI  :  10.1088/1742-6596/443/1/012017

来源: IOP

【 摘 要 】

In this paper, we summarized our recent experimental results on Fe-Cu model alloys irradiated by Fe ion. Two kinds of Fe-Cu alloys with 0.3%Cu and 0.6%Cu were prepared and irradiated by 2.5 MeV Fe ion at 573 K. Irradiation dose is 0.1 dpa and 1.2 dpa for each type alloy respectively. Positron annihilation techniques of slow positron beam were used to investigate the irradiation induced defects. Results show that the S parameters are higher in the specimens with high irradiation dose, but the intensity of Cu peaks of CDB is lower. It indicates that the precipitation of Cu atoms formed easily as lower irradiation dose.