Kepco Nuclear Fuel Co., Ltd.

Dae Gyun Go

Seung Jae Lee

Yoon Ho Kim

Chung Yong Lee

Sung Yong Lee

Yong Kyoon Mok

Hun Jang

Yeon Soo Na

Min Young Choi

Tae Sik Jung

Jae Ik Kim

A method of manufacturing a zirconium alloy for a nuclear fuel cladding tube includes melting a mixture of 0.5 wt % of Nb, 0.4 wt % of Mo, 0.1 to 0.15 wt % of Cu, 0.15 to 0.2 wt % of Fe, and a balance of zirconium to prepare a melted ingot; heat treating the melted ingot at 1,000 to 1,050&#xb0; C. for 30 to 40 min. followed by quenching in water to prepare a heat-treated ingot; preheating the heat-treated ingot at 630 to 650&#xb0; C. for 20 to 30 min. to prepare a preheated ingot followed by hot rolling the preheated ingot at a reduction ratio of 60 to 65% to provide a hot-rolled material; thrice performing vacuum annealing followed by cold-rolling; and vacuum annealing a third cold-rolled material in a final vacuum annealing at 510 to 520&#xb0; C. for 7 to 9 hrs. to provide the zirconium alloy as a cold-rolled material.

Method of manufacturing a corrosion-resistant zirconium alloy for a nuclear fuel cladding tube

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Daejeon, South Korea

Dae Gyun Go