URANIUM ALLOY NEWSLETTER NO. 14

Abstract

Ames Lab. Studies of Nb--U alloys, phase studies of the U----Z--system and the solubility of U in Zn, are summarized. Argonne National Lab. Phase studies of C -- U systems and Nb--U alloys, the effects of radiation on Mo--U alloys, corrosion and irradiatron of Sr--U systems and Nb--U--Zr alloys are reported. Battelle Memorial lnst. The stabrlit.v and existence range of the intermediate epsilon phase, heat treatment, and radiation damage of U--Zr alloys were investigated. A study of the physrcal properties of Mo--U alloys, U alloys for slug-type fuel elements, low-melting U alloys for reactor fuels is presented. The preparation of Al--U alloys is outlined, and corrosion studies of U--Zr alloys were made. Hanford Atomic Products Operation. A series of experiments covering the testing of irradiated U alloys and the transformation kinetics of Si- -U systems were initiated. Knolls Atomic Power Lab. Irradiation stability and the equilibrium phase diagram of U--Zr alloys, and fission gas diffusion in Al--U alloys are being investigated. National Bureau of Standards. A brief summary of the work on Pt--U alloys is given. Nuclear Metals, Inc. Cladding of unalloyed U with either Zr or zircaloy by coextrusion and the preparation of Si--U systems were reported. Sylvania Electricmore » Products, Inc. The preparation of enriched Mo-- U alloys, investigation of the fabrication of epsilonized Si--U system by powder metallurgy and corrosron rates in 600 deg F water are being studied. Westinghouse Atomic Power Division. Study of powder films of diffusion areas in Zr clad-U/sub 3/Si, preparation of fuel elements by brazing extruded reds of Si-- U inside zircaloy tubes, mechanism of corrosion of ueclad U/sub 3/ Si, radiation of Mo--U alloys, and Mo--U phase diagrams are reported. Atomics International (NAA). Results of thermal cycling as cast U alloy slugs are presented. (J.E.D.)« less