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U.S. Department of Energy
Office of Scientific and Technical Information

Method of manufacturing cladding tubes of a zirconium-based alloy for fuel rods for nuclear reactors

Patent ·
OSTI ID:6149924

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 b-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 b-quenching prior to a cold rolling, after which an intermediate annealing is performed at a temperature of 500/sup 0/-675/sup 0/ C., and preferably at a temperature of 500/sup 0/-610/sup 0/ 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.

Assignee:
Santrade Ltd. (Sweden)
Patent Number(s):
US 4450020
OSTI ID:
6149924
Country of Publication:
United States
Language:
English