SEMI-ANNUAL SUMMARY RESEARCH REPORT IN METALLURGY FOR JULY-DECEMBER 1957

Technical Report · Fri Aug 15 04:00:00 EDT 1958

OSTI ID:4279800

The separation of ThO/sub 2/ and C from ThCl/sub 4/ by vacuum sublimation is described. Three methods for the prepapurity Y/sub 2/O/sub 3/ for the production of Y metal is presented. The preparation of V metal by the iodide process and by the reduction of V/sub 2/O/sub 5/ is presented. The preparation of Nb metai by Ihe reduction of Nb/sub 2/O/sub 5/ with Cu, Mg, and Al and by the iodide process is discussed. The preparation of Th by the iodide process and by the Reduction of ThF/sub 4/ with Ca-Mg is described. The solubility of U in zinc and thc thermodynamic properties of U/sub 2/Zn/sub 17/ was investigated. The preparation of a series of Y-Th alloys is reported. A phase diagraza and thermodynamic properties are given for a Zn-Zn alloy. The solubility of thorium hydride in thorium was determined from 300 to 800 C. Lattice constants are given for V-Cr alloys. Phase stedies are reported in the Al-V and Zr -Ni alloys. The physical properties of CaMg/sub 2/ and MgCu/sub 2/ were investigated. The effects of impurities on the allotropy of Ca was investigated. The elastic constants of single crystals of several Cu-Ni alloys were determined at room temperature using the pulse-echo tecchnique. The low temperature properties of V metal were investigated. The reaction of Ba with CaCl/sub 2/ is being studied at 900 C. The distribution coefficient for Ag between liquid Pb and liquid Zn at 500 C was determined from 0.01 wt.% Ag in Zn to 0.7 wt.% Ag in Zn. The mechanical working properties of Y metal were investigated by cold-rolling, hot rolling, and swaging methods. Vapor pressure measurements were performed over Ca, Mg, and Ca-Mg alloys. The oxidation of Y-Ti alloys and their behavior in high temperatere water was studied. (For preceding period see ISC-903.) (W. L. H.)

• Research Organization: Ames Lab., Ames, Iowa
• DOE Contract Number: W-7405-ENG-82
• NSA Number: NSA-13-002183
• OSTI ID: 4279800
• Report Number(s): ISC-977
• Country of Publication: United States
• Language: English

Related Subjects

ALL PHYSICAL PROPERTIES-- CALCIUM ALLOYS-- COPPER ALLOYS-- INTERMETALLIC COMPOUNDS-- MAGNESIUM ALLOYS
DUCTILITY-- LOW TEMPERATURE-- MEASURED VALUES-- VANADIUM
METALLURGY AND CERAMICS