发明名称 |
METHOD OF PRODUCING A FLAT ZIRCONIUM ALLOY PRODUCT, FLAT PRODUCT THUS OBTAINED AND A NUCLEAR PLANT REACTOR GRID WHICH IS MADE FROM SAID FLAT PRODUCT |
摘要 |
The invention relates to a method of producing a flat zirconium alloy product with a Kearns factor (cross direction) of between 0.3 and 0.7. The inventive method consists in: producing an ingot containing Nb = 0.5 to 3.5 %, Sn = 0 to 1.5 %, Fe = 0 to 0.5 %, Cr + V = 0 to 0.3 %, S = 0 to 100ppm, O = 0 to 2000ppm, Si = 0 to 150ppm, the remainder being zirconium and impurities; shaping the aforementioned ingot; performing one or more hot rolling operations in order to obtain a flat product, whereby the last operation is performed at between (810-20xNb%) DEG C and 1100 DEG C and is not followed by any quenching from phase alpha + beta or beta ; optionally performing an annealing operation at a maximum of 800 DEG C; and performing one or more cold rolling and annealing operations, said annealing operations being performed at a maximum of 800 DEG C. The invention also relates to the flat zirconium alloy product thus obtained. The invention further relates to a support grid for fuel rods in a nuclear plant reactor, which is obtained by shaping the flat product. |
申请公布号 |
WO2005035817(A2) |
申请公布日期 |
2005.04.21 |
申请号 |
WO2004FR02467 |
申请日期 |
2004.09.29 |
申请人 |
COMPAGNIE EUROPEENNE DU ZIRCONIUM - CEZUS;BARBERIS, PIERRE;SIMONOT, CLAUDE |
发明人 |
BARBERIS, PIERRE;SIMONOT, CLAUDE |
分类号 |
C22C16/00;C22F1/18;G21C3/07;G21C3/34 |
主分类号 |
C22C16/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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