ZIRCONIUM ALLOY FOR FUEL ASSEMBLY FOR NUCLEAR REACTOR

摘要

PROBLEM TO BE SOLVED: To increase a proof stress (strength) and improve corrosion resistance, and improve a absorptivity for hydrogen and a dimensional stability. SOLUTION: The alloy incorporates Fe, Cr, Sn, and Nb, further actively incorporates O. The compounding ratio of these elements shows an improved effects both in a strength and a corrosion resistance. The total amount regulation of Sn and of Nb affect the strength. The preferable total amounts of Sn and Nb are 0.7% or larger. The total amount regulation of Fe and of Cr are also important. The preferable total amount regulation of Fe and of Cr are 0.28 to 10%.