Microstructural development from interdiffusion and reaction between U-Mo and AA6061 alloys annealed at 600° and 550 °C

JOURNAL OF NUCLEAR MATERIALS

卷:477

Article

Perez, E.¹  Keiser, D. D.¹  Sohn, Y. H.² 

[1] Idaho Natl Lab, Nucl Fuels & Mat Div, POB 1625, Idaho Falls, ID 83415 USA

[2] Univ Cent Florida, Dept Mat Sci & Engn, 4000 Cent Florida Blvd, Orlando, FL 32816 USA

关键词: Fuel development;    Nuclear fuel;    Research reactor;    Uranium molybdenum;    Aluminum alloy;    Interdiffusion;    Intermetallic;    Phase development;    U-Mo;    6061;    AA6061;   

DOI  :  10.1016/j.jnucmat.2016.05.019

来源: Elsevier

【 摘 要 】

The U.S. Material Management and Minimization Reactor Conversion Program is developing low enrichment fuel systems encased in Al-alloy for use in research and test reactors. Monolithic fuel plates have local regions where the U-Mo fuel plate may come into contact with the Al-alloy 6061 (AA6061) cladding. This results in the development of interdiffusion zones with complex microstructures with multiple phases. In this study, the microstructural development of diffusion couples, U-7 wt% Mo, U-10 wt% Mo, and U-12 wt% Mo vs. AA6061, annealed at 600 degrees C for 24 h and at 550 degrees C for 1, 5, and 20 h, were analyzed by scanning electron microscopy with x-ray energy dispersive spectroscopy. The microstructural development and kinetics were compared to diffusion couples U-Mo vs. high purity Al and binary Al-Si alloys. The diffusion couples developed complex interaction regions where phase development was influenced by the alloying additions of the AA6061. Published by Elsevier B.V.

【 授权许可】

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