Characterization of U-2 wt% Mo and U-10 wt% Mo alloy powders prepared by centrifugal atomization

Phase transformation of metastable cubic γ-phase in U–Mo alloys

“…uranium) density of the fuel itself. It has been demonstrated that aluminium base dispersion fuel with U 3 Si 2 as fuel material is very successful in converting reactor cores which requires fuel element loading of up to about 5 g U cm −3 [7,8]. However, still higher uranium density fuel compounds/alloys are required to be developed to fulfill the objective of developing a fuel system which can achieve a heavy metal density of 8-9 g U cm −3 , as many of the researchers wanted to develop a neutron source with high thermal neutron flux density for superior quality experiments [9].…”

Development, preparation and characterization of uranium molybdenum alloys for dispersion fuel application

“…In fact the U-Mo alloys containing upto 10 at.% Mo when water quenched forms ␣ and ␣ phases which are slight variation from the orthorhombic ␣-phase [13,14]. Tangri [8] has reported base centered tetragonal phase ␥ • for water quenched alloys containing 11.39 at.% to 12.73 at.% Mo.…”

“…Here the maximum uranium metal density in the fuel meat one can achieve is in the range from 4.8 to 6.0 g/cm 3 [7]. By using uranium metal particles as dispersoid in fuel elements, uranium metal density of the order of 8 to 9.0 g/cm 3 can be achieved in the fuel meat [8]. The room temperature phase of pure Uranium (i.e.…”

“…Among them uranium molybdenum alloys forms ␥-phase at a relatively higher range of solute concentration (see Fig. 1) which makes it more favourable [8]. An additional advantage is that molybdenum has a lower parasitic capture cross-section for neutrons.…”

First principles application for mechanical properties of Ti-doped W particles enhanced U matrix composite

“…In this case, the alloying method can solve the problem. Kim et al [1] investigated some commonly alloying elements of uranium, such as Mo, Ti, Nb, Zr and Cr. These elements have relatively large solubility in hightemperature phase of c-U (from 1047.8 to 1405.3 K, bcc crystal structure), form continuous solid solution in a wide range of temperatures [2], and hardly dissolve in room temperature phase of a-U (\940.7 K, orthorhombic crystal structure).…”