| 摘要 |
PURPOSE:To provide high corrosion resistance at high burnup, by regulating the value of Fe/Ni to a specific ratio range and by precipitating a fine intermetallic compound of Sn and Ni in Zr crystalline grains in an alpha-phase in a Zr-base alloy containing specific amounts of Sn, Fe, and Ni. CONSTITUTION:The zirconium-base alloy has a composition consisting of, by weight, 1-2% Sn, 0.2-0.35% Fe, 0.03-0.16% Ni, and the balance Zr and satisfying Fe/Ni=1.4-8 and also has a structure in which the intermetallic compound of Sn and Ni is precipitated in the zirconium grains in the alpha-phase. It is preferable that, besides the Sn-Ni intermetallic compound, an intermetallic compound of Fe, Ni, and Zr is also precipitated in the zirconium grains in the alpha-phase.
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