Titanium distribution in uranium--titanium alloys. [0. 5 and 0. 75 wt % Ti]
Electron-beam microprobe analyses were used to assess the uniformity of titanium distribution in both as-cast and heat-treated uranium-0.5 weight percent titanium (U-0.5 Ti) and uranium-0.75 weight percent titanium (U-0.75 Ti) alloys. Microsegregation due to coring was readily smoothed by heat treatment, but long-range variability remained (on the order of 0.1 wt percent). An attempt was made to examine titanium macrosegregation by a scanning image analysis measurement of the volume fraction of U/sub 2/Ti in an equilibrium microstructure, but a method for consistently obtaining resolvable U/sub 2/Ti particles could not be developed. As judged by tensile properties, a homogenization heat treatment of 1000/sup 0/ C for 24 hours was apparently the most effective of those tried for homogenizing the U-0.75 Ti alloy. The large grain size of the as-cast tensile bars apparently caused variability in the tensile-test results such that it was difficult to closely assess the optimum values of the heat-treatment parameters. 8 tables, 25 fig. (auth)
- Research Organization:
- Oak Ridge Y-12 Plant, Tenn. (USA)
- Sponsoring Organization:
- US Energy Research and Development Administration (ERDA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 7325045
- Report Number(s):
- Y-2055
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360102* -- Metals & Alloys-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104 -- Spectral Procedures-- (-1987)
ACTINIDE ALLOYS
ALLOYS
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
CRYSTAL STRUCTURE
DISTRIBUTION
ELECTRON MICROPROBE ANALYSIS
ELEMENTS
GRAIN SIZE
HEAT TREATMENTS
MECHANICAL PROPERTIES
METALS
MICROANALYSIS
MICROSTRUCTURE
SEGREGATION
SIZE
SPATIAL DISTRIBUTION
TENSILE PROPERTIES
TITANIUM
TITANIUM ADDITIONS
TITANIUM ALLOYS
TRANSITION ELEMENTS
URANIUM ALLOYS
URANIUM BASE ALLOYS