Method of making a sheet or strip of zircaloy with good formabil

Details Method of making a sheet or strip of zircaloy with good formabil Method of making a sheet or strip of zircaloy with good formabil

1991-07-16

1993-06-29

Roy, Upendra

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148421, 420422, C22C 1600

Patent

active

052230554

ABSTRACT:
A method of making a strip of ZIRCALOY 2 or 4 is disclosed wherein an ingot is worked, roughly shaped into a billet then quenched from the beta range, hot rolled in alpha range, annealed and cold rolled to 0.3 to 0.9 mm. The O and C, in ppm, are selected to satisfy the formula: O.sub.2 <1200-0.75 x C (R) so that a T texture is obtained systematically for thicknesses of at least 0.8 mm. The disclosure also concerns the strips obtained. The method can be applied to obtaining strips of excellent formability for the production of components for nuclear water reactors.

REFERENCES:
patent: 4584030 (1986-04-01), McDonald et al.
patent: 4649023 (1987-03-01), Sabol et al.
patent: 4717428 (1988-01-01), Comstock et al.
patent: 4775428 (1988-10-01), Bunel et al.
patent: 4881992 (1989-11-01), Bunel et al.
patent: 4981527 (1991-01-01), Charquet
patent: 5080861 (1992-01-01), Garde

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