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URANIUM ALLOY NEWSLETTER

Description: Argonne National Lab. Annealing experiments of highpurity C --U alloys in the gamma region in an Ar atmosphere show that the metal is subject to decarbinization. Fourteen binary U--Pd alloys were prepared and examined. Pd solubility in gamma U is less than 1 wt.% at 890 deg C. Seventeen binary alloys of U-Ru were prepared and examined in the as-cast condition. The corrosion resistance after irradiation of U--Si alloys was tested. Homogeneous U- -Ta alloys have not been obtained. Th-rich U alloys were found to be more stable under irradiation than the best U alloys. The effect of heat treatment on microstructure is being studied as part of the effort to understand the effect of alloying on corrosion resistance in Ti--U alloys. Crystal and corrosion studies on U--Zr alloys are reported. Armour Research Foundation. Small ternary additions were found to greatly affect the transformation characteristics of U-- Nb alloys, and a hardness change was noted for this alloy. Preliminary data for U--Nb--Zr alloy demonstrated a relationship between the strained matrix and the physical properties of the alloy. Battelle Memorial Institute. Phase relationships between the intermediate delta phases of the U--Mo and U--Ti systems were conducted. U--Zr, U--Mo, and U--Nb alloys were evaluated for use as high-temperature reactor fuels. The kinetics of the betato-epsilon decomposition of Zr--U alloys are being investigated. The mechanism of aqueous U corrosion is being studied. Mallinckrodt Chemical Works. In the production of Nb--U alloy by co-reduction there was an indication of insufficient heat. Thermal boosters and a redesigned bomb for improving heat conservation will be investigated. National Bureau of Standards. Experimental work on the U-- Pt system is completed. Thermal analyses on U--Pd alloys did not show the U transformations present. Metallographic examination revealed an apparently singlephase structure. Thermal analysis data were collected for U--Ru and ...
Date: November 1, 1956
Creator: Epremian, E. ed.
Partner: UNT Libraries Government Documents Department

URANIUM ALLOY NEWSLETTER NO. 14

Description: 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 Electric 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.)
Date: March 1, 1956
Creator: Epremian, E. ed.
Partner: UNT Libraries Government Documents Department

URANIUM ALLOY NEWSLETTER NO. 13

Description: Argonne National Lab. Results are summarized from irradiation and corrosion tests on alloys of U--Pu, U--Nb-Sn, and U- Zr-Nb, and U-- Si systems. Armour Research Foundation. Studies of the transformation kinetics of Ubase alloys have been completed, and results are summarized. TTT diagrams are presented for 2 Nb--U alloys. Battelle Memorial Inst. Phase studies, heat treatment studies, and preparation of U-- Zr alloys are described. The study of the properties and preparation of various U alloys for use as fuel elements are continuing. Techniques for melting and casting Al--U alloys and for melting U-- Zr alloys are being developed. Hanford Atomic Products Operation. Results of metallographic and phase studies on U-- Th alloys are reported. The corrosion resistance of several Th--U-- Zr alloys has been studied. National Bureau of Standards. The preparation and phase relations of alloys of U with the platinum metals are being studied. North American Aviation, Inc. The feasibility of fabricating specific U alloys for fuel elements on a semi-production scale is being investigated. Nuclear Metals, Inc. Studies of the thermal properties of U- -Nb--Zr alloys and of the corrosion of U-- Si systems are reported. Fabrication behavior and microstructures in cast, extruded, and heat treated U alloys are being examined. Sylvania Electric Products, Inc. Data are presented on the mechanical properties and dimensional stability under thermal cycling of various powder metallurgy binary U alloys. Corrosion rates in water and densities are reported of some powder metallurgy Si-- U systems. Westinghouse Atomic Power Div. The changes in dimensions, density, electrical resistivity, and hardness of irradiated U--Mo and U--Nb alloys are tabulated. The effects of irradiating prototype fuel rods of U and U--Zr alloy are reported. (W.L.H.)
Date: November 1, 1955
Creator: Epremian, E. ed.
Partner: UNT Libraries Government Documents Department

STRAY RADIATION MEASUREMENTS AT PARTICLE ACCELERATOR SITES

Description: Stray radiation measurements made at 23 particle accelerator sites are summarized and discussed. Conclusions with regard to safe accelerator operation are drawn, as well as general conclusions regarding radiation dosimetry, maximum permissible levels, and instrumentation. (auth)
Date: October 31, 1958
Creator: McLaughlin, J.E. Jr.; O'Brien, K.; Solon, L.R.; Zila, A.V.; Lowder, W.M. & Blatz, H.
Partner: UNT Libraries Government Documents Department