Properties of DU–10wt% Mo alloys subjected to various post-rolling heat treatments

Mechanical properties of depleted uranium-molybdenum (U-Mo) alloys subjected to different post-processing treatments have been obtained using microhardness, quasi-static tensile tests, and scanning electron microscopy failure analysis. U-Mo alloy foils are currently under investigation for potential...

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Bibliographic Details
Published in:Nuclear engineering and design 2010-06, Vol.240 (6), p.1332-1339
Main Authors: Burkes, Douglas E., Prabhakaran, Ramprashad, Hartmann, Thomas, Jue, Jan-Fong, Rice, Francine J.
Format: Article
Language:English
Subjects:
ALLOYS
ANNEALING
CARBON
depleted uranium-molybdenum alloys
ENRICHED URANIUM
EXTRAPOLATION
FABRICATION
HEAT TREATMENTS
high power research reactors
highly enriched uranium
IRRADIATION
MECHANICAL PROPERTIES
MICROHARDNESS
NUCLEAR FUEL CYCLE AND FUEL MATERIALS
NUCLEAR PHYSICS AND RADIATION PHYSICS
potential fuel conversion
PROCESSING
RESEARCH REACTORS
SCANNING ELECTRON MICROSCOPY
TENSILE PROPERTIES
YIELD STRENGTH
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Summary:Mechanical properties of depleted uranium-molybdenum (U-Mo) alloys subjected to different post-processing treatments have been obtained using microhardness, quasi-static tensile tests, and scanning electron microscopy failure analysis. U-Mo alloy foils are currently under investigation for potential fuel conversion of high power research reactors to low enriched uranium fuel. Although mechanical properties take on a secondary effect during irradiation, an understanding of the alloy behavior during fabrication and the effects of irradiation on the integrity of the fuel is essential. In general, the microhardness was insensitive to annealing temperature but decreased with annealing duration. Yield strength, Young’s modulus and ultimate tensile strength improved with both increasing annealing temperature and duration. The failure mode was also insensitive to annealing conditions, but was significantly controlled by the impurity concentration of the alloy, especially carbon. Values obtained from literature are also provided with reasonable agreement based on extrapolation of annealing duration, even though processing conditions and applications were quite different in some instances.
ISSN:0029-5493
1872-759X
DOI:10.1016/j.nucengdes.2010.02.008