Ductile irradiated zirconium alloy

Details Ductile irradiated zirconium alloy Ductile irradiated zirconium alloy

1988-06-10

1989-11-07

Roy, Upendra

Alloys or metallic compositions

Zirconium or hafnium base

148 115F, 148133, 376410, 376417, C21D 126, C22C 1600

Patent

active

048790931

ABSTRACT:
A stabilized alpha metal matrix provides an improved ductility after irradation without loss of corrosion resistance in a "Zircaloy" alloy modified with measurable amounts of up to 0.6 percent by weight of niobium or 0.1 percent by weight of molybdenum. Tin is present in the Zircaloy in the range of 1.2 to 1.70 percent by weight and the oxygen level is in the range of from 1000 to 1600 ppm. Iron and chromium alloying element levels are those of typical Zircaloys. The average intermetallic precipitates' particle sizes are in the range of from 1200 to 1800 angstroms, thereby providing optimum corrosion resistance of the improved alloy in both boiling water and pressurized water reactors.

REFERENCES:
patent: 3261682 (1966-07-01), Rosler
patent: 3271205 (1966-09-01), Winton et al.
patent: 4065328 (1977-12-01), Cheadle
patent: 4212686 (1980-07-01), Lunde et al.
patent: 4584030 (1986-04-01), McDonald et al.
patent: 4775508 (1988-10-01), Sabol et al.

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