Title

Selected Observations In Phase Constituents, Growth Kinetics And Microstructural Development Of Aluminides In U-Mo Vs. Al And 6061 Diffusion Couples Annealed At 600°C

Keywords

Growth kinetics; Metallic nuclear fuels; U-Mo alloys; U-Mo-Al; Uranium alloys

Abstract

This paper presents selected experimental observations of phase constituents, growth kinetics, and microstructural development of aluminide phases that develop in solid-to-solid diffusion couples assembled with U-7wt.%Mo, U-10wt.%Mo and U-12wt.%Mo vs. Al and 6061 alloy after a diffusion anneal at 600°C for 24 hours. Scanning electron microscopy coupled with energy dispersive spectroscopy, electron microprobe analysis, and transmission electron microscopy via focused ion beam in-situ lift-out were employed to characterize the interaction layer that develops by interdiffusion. While concentration profiles exhibited no significant gradients, microstructural analysis revealed the presence of extremely complex and nano-scale phase constituents with presence of orthorhombic-α-U, cubic-UAl3, orthorhombic-UAl4, hexagonal-U6Mo4Al 43 and diamond cubic-UMo2Al20 phases. Presence of multi-phase layers with microstructure, which suggest a significant role of grain boundary diffusion, was observed. © (2009) Trans Tech Publications.

Publication Date

1-1-2009

Publication Title

Defect and Diffusion Forum

Volume

289-292

Number of Pages

41-49

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.4028/www.scientific.net/DDF.289-292.41

Socpus ID

75949113932 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/75949113932

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