Defects evolution and element segregation of Ni-Mo-Cr alloy irradiated by 30?keV Ar ions

Liu Min; Liu Wenguan; He Xiujie; Gao Yantao; Liu Renduo; Zhou Xingtai

doi:10.1016/j.net.2020.01.021

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자료유형: 학술저널

저자정보: Liu Min (Sun Yat-sen University) Liu Wenguan (Sun Yat-sen University) He Xiujie (Sun Yat-sen University) Gao Yantao (Shanghai Institute of Applied Physics Chinese Academy of Sciences) Liu Renduo (Shanghai Institute of Applied Physics, Chinese Academy of Sciences) Zhou Xingtai (Shanghai Institute of Applied Physics Chinese Academy of Sciences)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제52권 제8호

발행연도: 2020.8

수록면: 1,749 - 1,755 (7page)

DOI: 10.1016/j.net.2020.01.021

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In present study, TEM foils of Ni-Mo-Cr alloy were directly irradiated with 30 keV Ar ions to allow direct characterization. The defects evolution and element segregation after irradiation were investigated by TEM and HAADF-EDS linear scanning. At low irradiation doses (1.38 and 2.76 dpa), black dots were formed and grew with increasing dose. Complicated defects including peas-shaped dislocation loops, polygon dislocation networks and large loops were visible in samples irradiated to high doses (13.8 and 27.6 dpa). Meanwhile, dislocation channels appeared, in which defects were swept out. Significant Mo depletions at dislocation lines and grain boundaries were induced by irradiation due to large misfits between Mo-Ni atoms and high content of Mo.

#Ni-Mo-Cr alloy #Black dots #Dislocation loops and networks #Dislocation channels #Radiation induced segregation (RIS)

참고문헌 (31)

참고문헌 신청

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