Electron irradiation-induced defects in Mo-diluted FeCrNi austenitic alloy during void swelling incubation

The International Workshop on Positron Studies of Defects 2014

Wang, B.Y.^1 ; Lu, E.Y.^1 ; Zhang, C.X.^1 ; Xu, Q.^2 ; Jin, S.X.^1 ; Zhang, P.^1 ; Cao, X.Z.^1

Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Institute of High Energy Physics, CAS, Beijing

100049, China^1

Research Reactor Institute, Kyoto University, Kumatori-cho, Osaka

590-0494, Japan^2

关键词: Defect concentrations;    Electron radiation;    Hardening properties;    Incubation periods;    Irradiation-induced defects;    Micro Vickers hardness;    Microstructural features;    Positron annihilation technique;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/674/1/012010/pdf
DOI  :  10.1088/1742-6596/674/1/012010

来源: IOP

【 摘 要 】

The microstructural features and the effect of Mo addition in FeCrNi austenitic alloy during incubation period were investigated using positron annihilation technique and micro- Vickers Hardness. The electron irradiation, which could induce vacancy defects in material, was performed at room temperature up to the dose of 1.7x10-4and 5x10-4dpa, respectively. The defect concentration was estimated about 10-4-10-7though the standard trapping model. The added Mo atoms could trap vacancies to form Mo-vacancy complexes, which may restrain the migration and growth of vacancy defects during electron irradiation. In addition, the microstructural evolution during electron radiation resulted in hardening, while the added Mo might improve the hardening property of the alloy.