Patent Number: 
Section: claims

1. A nuclear fuel pellet for a nuclear reactor, comprising:a metallic matrix; andceramic fuel particles of a fissile material dispersed in the metallic matrix,wherein the metallic matrix is an alloy of U5-6Zr3-4NbTi wherein a concentration of each element in the metallic matrix is at most 50 molar-%. 2. The nuclear fuel pellet according to claim 1, wherein the concentration of each of the elements in the metallic matrix is at least 5 molar-%. 3. The nuclear fuel pellet according to claim 1, wherein the alloy is a single phase alloy with precipitates constituting less than 5 volume-% of the alloy. 4. The nuclear fuel pellet according to claim 1, wherein the alloy is a High Entrophy Alloy; (HEA). 5. The nuclear fuel pellet according to claim 1, wherein the alloy has a body centered cubic structure. 6. The nuclear fuel pellet according to claim 1, wherein a total concentration of additional elements in the metallic matrix is at most 5 molar-%. 7. The nuclear fuel pellet according to claim 1, wherein the ceramic fuel particles are uniformly dispersed in the metallic matrix. 8. The nuclear fuel pellet according to claim 1, wherein the fissile material is selected from the group consisting of actinide oxide, actinide nitride, actinide silicide and actinide carbide. 9. The nuclear fuel pellet according to claim 1, wherein the fissile material is selected from the group consisting of UO2, U3Si2, U3Si, USi, UN, PuO2, Pu3Si2, Pu3Si, PuSi, PuN, ThO2, Th3Si2, Th3Si, ThSi and ThN. 10. A fuel rod comprising a cladding tube enclosing a plurality of nuclear fuel pellets according to claim 1. 11. A fuel assembly for use in a nuclear reactor, comprising a plurality of fuel rods according to claim 10.