Elastic properties of rolled uranium–10 wt.% molybdenum nuclear fuel foils

In situ neutron diffraction data was collected during elastic loading of rolled foils of uranium–10 wt.% molybdenum bonded to a thin layer of zirconium. Lattice parameters were ascertained from the diffraction patterns to determine the elastic strain and, subsequently, the elastic moduli and Poisson’s ratio in the rolling and transverse directions. The foil was found to be elastically isotropic in the rolling plane with an effective modulus of 86 ± 3 GPa and a Poisson’s ratio 0.39 ± 0.04.