Fabrication and Properties of a Sexinary Uranium-Base Alloy.

摘要

A sexinary uranium-base alloy,containing molybdenum,niobium,zirconium,titanium,and vanadium,was evaluated from a fabrication and properties standpoint. The alloy had the following composition:uranium (97.10-weight percent), 0.75-wt percent molybdenum, 0.75-wt percent niobium, 0.75-wt percent zirconium, 0.50-wt percent titanium,and 0.15-wt percent vanadium;or uranium (91.58-atomic percent), 1.76-at. percent molybdenum, 1.81-at. percent niobium, 1.85-at. percent zirconium, 2.34-at. percent titanium,and 0.66-at. percent vanadium. The alloy has a high density (18.1grams per cubic centimeter) and a superior corrosion resistance compared with unalloyed uranium. Studies related to fabrication include melting and casting,homogeneity,chemistry,extrusion (K = 5tons per inches exp 2at 975exp 0 C) (K = 69 megapascals),and machining. The alloy was heat-treatable to a wide variety of mechanical properties by solution quenching followed by treatments to underage or overage the material. Studies related to properties include tensile properties,hardness and hardenability,transformation structures,fracture appearance,and metallography.