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AbstractAbstract
[en] In a power reactor destined to supply industrially recoverable thermal energy, the most economical source of heat still consists of natural metallic uranium. However, the nuclear fuel material, most often employed in the form of rods of 20 to 40 mm diameter, is subjected to a series of stresses which lead to irreversible distortions usually incompatible with the substructure of the reactor. As a result the fuel material must possess at the outset a certain number of qualities which must be determined. Investigations have therefore been carried out, first on the technological characters peculiar to each of the three allotropic phases of pure uranium metal, and on their interactions on the stabilisation of the material which consists of either cast uranium or uranium pile-treated in the γ phase. (author)
[fr]
Dans un reacteur de puissance destine a fournir de l'energie thermique industriellement recuperable, la source de chaleur la plus economique reste constituee par de l'uranium metallique naturel. Or, le materiau combustible nucleaire, employe le plus souvent sous forme de barreaux de 20 a 40 mm de diametre, se trouve soumis a un ensemble de contraintes qui provoque des deformations irreversibles, le plus souvent incompatibles avec l'infrastructure du reacteur. Par consequent, le materiau combustible doit presenter a l'origine un certain nombre de qualites qu'il est necessaire de determiner. Aussi a-t-on d'abord etudie les caracteres technologiques propres a chacune des trois phases allotropiques de l'uranium-metal pur et leurs interactions sur la stabilisation du materiau constitue soit par de l'uranium coule, soit par de l'uranium traite en pile en phase γ. (auteur)Original Title
Contribution a l'etude des materiaux combustibles nucleaires a base d'uranium metallique
Primary Subject
Secondary Subject
Source
Nov 1957; 80 p; 64 refs.; These sciences
Record Type
Report
Literature Type
Thesis/Dissertation
Report Number
Country of publication
ALLOTROPY, BCC LATTICES, BETATRONS, BULK DENSITY, BURNUP, CROSS SECTIONS, CRYSTAL-PHASE TRANSFORMATIONS, DILATOMETRY, DRAWING, EUTECTOIDS, FISSILE MATERIALS, IMPURITIES, METALLOGRAPHY, MICROSTRUCTURE, NUCLEAR FUELS, ORTHORHOMBIC LATTICES, PHASE DIAGRAMS, QUENCH HARDENING, RECRYSTALLIZATION, ROCKWELL HARDNESS, SPECIFICATIONS, TEMPERING, TETRAGONAL LATTICES, TEXTURE, THERMAL FATIGUE, URANIUM-ALPHA, URANIUM-BETA, URANIUM-GAMMA, VACUUM CASTING, VICKERS HARDNESS, X-RAY RADIOGRAPHY
ACCELERATORS, ACTINIDES, CASTING, CRYSTAL LATTICES, CRYSTAL STRUCTURE, CUBIC LATTICES, CYCLIC ACCELERATORS, DENSITY, DIAGRAMS, ELEMENTS, ENERGY SOURCES, FABRICATION, FATIGUE, FISSIONABLE MATERIALS, FUELS, HARDENING, HEAT TREATMENTS, INDUSTRIAL RADIOGRAPHY, INFORMATION, MATERIALS, MATERIALS TESTING, MATERIALS WORKING, MECHANICAL PROPERTIES, METALS, NONDESTRUCTIVE TESTING, PHASE TRANSFORMATIONS, PHYSICAL PROPERTIES, REACTOR MATERIALS, TESTING, THERMAL ANALYSIS, URANIUM
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