Abstract
BS>The creep properties of annealed Zircaloy-2, Zircaloy3, and 15% cold- worked Zircaloy-2 at elevated temperatures were determined. The metallurgical bond formed between electropolished U and Zr cladding by hydrostatic pressing is being evaluated. Oxidation data are given for Nb and Nb alloys in dry air at various temperatures. A study of the phase relationships which occur between the delta phases of the U--Zr and U--Mo systems is nearly complete. The solid-solid reactions of some uranium nitrates and carbides at 1800 deg C are given. The creep properties of Ta at 1200 deg F in a helium atmosphere were investigated. (For preceding period see BMI-1226.) (W.L.H.)
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