C - Chemistry – Metallurgy – 22 – F
Patent
C - Chemistry, Metallurgy
22
F
C22F 1/18 (2006.01) C22C 16/00 (2006.01)
Patent
CA 2533172
The invention concerns a method for making a flat zirconium alloy product, characterized in that it consists in: preparing a zirconium alloy ingot containing at least 95 % of zirconium; shaping said alloy to obtain a flat product; subjecting said product to a hardening treatment .beta. to obtain an acicular structure; subjecting said product to a single-pass rolling treatment without intermediate annealing, between room temperature and 200 ·C, with a reduction rate between 2 and 20 %; and subjecting said flat product to an annealing treatment .alpha. or .alpha. + .beta. between 500 and 800 ·C for 2 minutes to 10 hours. The invention also concerns the resulting flat zirconium alloy product, and a fuel assembly component for a nuclear power plant reactor obtained by shaping said product.
Procédé de fabrication d'un produit plat en alliage de zirconium, caractérisé en ce que : - on élabore un lingot d'alliage de zirconium contenant au moins 95% de zirconium ; - on le met en forme pour obtenir un produit plat ; - on le soumet à une trempe .beta. en vue de l'obtention d'une structure aciculaire ; - on le soumet à un laminage en une seule séquence sans recuit intermédiaire, entre la température ambiante et 200~C, avec un taux de réduction entre 2 et 20% ; - et on soumet ledit produit plat à un traitement de recuit .alpha. ou .alpha. + .beta. entre 500 et 800~C pendant 2 minutes à 10 heures. Produit plat en alliage de zirconium ainsi obtenu, et élément d'un assemblage combustible pour réacteur de centrale nucléaire obtenu par sa mise en forme.
Barberis Pierre
Simonot Claude
Compagnie Europeenne Du Zirconium-Cezus
Robic
LandOfFree
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