Microstructural Development From Interdiffusion And Reaction Between U-Mo And Aa6061 Alloys Annealed At 600° And 550 °C

Keywords

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

Abstract

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 °C for 24 h and at 550 °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.

Publication Date

8-15-2016

Publication Title

Journal of Nuclear Materials

Volume

477

Number of Pages

178-192

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.jnucmat.2016.05.019

Socpus ID

84969718908 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84969718908

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