Method of manufacturing cladding tubes of a zirconium-based allo

Details Method of manufacturing cladding tubes of a zirconium-based allo Method of manufacturing cladding tubes of a zirconium-based allo

1982-10-04

1984-05-22

Skiff, Peter K.

Metal treatment

Compositions

Heat treating

C22F 118

Patent

active

044500203

ABSTRACT:
In the manufacture of cladding tubes of a zirconium-based alloy for fuel rods for nuclear reactors by extrusion of the zirconium-based alloy and cold rollings of the extruded product with annealings, intermediate annealings, between the cold rollings and a .beta.-quenching of the extruded product prior to the last cold rolling, a cladding tube is provided which has at the same time good corrosion properties and mechanical properties by performing the .beta.-quenching prior to a cold rolling, after which an intermediate annealing is performed at a temperature of 500.degree.-675.degree. C., and preferably at a temperature of 500.degree.-610.degree. C. The zirconium-based alloy is a zirconium-tin alloy comprising 1.2-1.7% tin, 0.07-0.24% iron, 0.05-0.15% chromium and 0-0.08% nickel.

REFERENCES:
patent: 3865635 (1975-02-01), Hofvenstam et al.
patent: 3963534 (1976-06-01), Frenkel

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