ON THE IMPROVEMENT OF METALLIC URANIUM FUEL. II. THERMAL CYCLING AND CORROSION TESTS OF EXTRUDED URANIUM RODS AND SOME URANIUM ALLOYS

Journal Article · Mon Jul 01 04:00:00 EDT 1963 · Nippon Genshiryoku Gakkaishi (Japan)

OSTI ID:4647102

Maruya, K; Saito, T; Maekawa, T

Uranium alloys were fabricated by a co-reduction process, and thermal cycling tests were carried out. Properties of gamma -extruded uranium rods were tested, and their merits were compared with those of alloying specimens. Corrosion tests of uranium and uranium alloys were undertaken in a temperature range of 300 to 800 deg C. Limitation of corrosion resistivity of uranium alloys is discussed. On gamma -extruded uranium rods, BETA -oil-quenched specimen showed the smallest growth, warp, and wrinkle after the thermal-cycling tests. After oil-quenching treatment, it was not necessary to follow with an alpha - annealing procedure. Requirements to reduce thermal-cycling growth by heat treatments were different in each specimen, so the appropriate heat treatments should be considered. Thermal-cycling growth was also large in extremely grain- refined specimens. Weight gain of uranium alloys in oxidation by CO/sub 2/ was larger than that of metallic uranium in the temperature range above 550 deg C. From the standpoints of grain refinement, workability, thermal cycling growth, corrosion resistivity, and neutron economics, U--Nb--Mo, U--Cr--Mo, and U-- Zr-- Mo ternary alloys are recommended as the uranium fuels. (auth)

• Research Organization: Mitsubishi Atomic Power Industries, Inc., Japan
• NSA Number: NSA-17-037471
• OSTI ID: 4647102
• Journal Information: Nippon Genshiryoku Gakkaishi (Japan), Journal Name: Nippon Genshiryoku Gakkaishi (Japan) Vol. Vol: 5; ISSN NGEGA
• Country of Publication: Country unknown/Code not available
• Language: Japanese

Related Subjects

ALLOTROPY
ANNEALING
CARBON DIOXIDE
CHROMIUM ALLOYS
CORROSION
DEFECTS
ECONOMICS
EXPANSION
EXTRUSION
FABRICATION
FUEL ELEMENTS
GRAIN SIZE
HEAT TREATMENTS
HOT WORKING
MATERIALS TESTING
METALS, CERAMICS, AND OTHER MATERIALS
MOLYBDENUM ALLOYS
NEUTRONS
NIOBIUM ALLOYS
OILS
OXIDATION
QUENCHING
REFINING
RODS
STABILITY
STANDARDS
TEMPERATURE
URANIUM
URANIUM ALLOYS
URANIUM- ALPHA
URANIUM-BETA
URANIUM-GAMMA
WEIGHT
ZIRCONIUM ALLOYS