Metal treatment – Process of modifying or maintaining internal physical... – With casting or solidifying from melt
Reexamination Certificate
2005-06-07
2005-06-07
Wyszomierski, George (Department: 1742)
Metal treatment
Process of modifying or maintaining internal physical...
With casting or solidifying from melt
C148S672000
Reexamination Certificate
active
06902634
ABSTRACT:
The present invention relates to a method for manufacturing zirconium-based alloys containing niobium with superior corrosion resistance for use in nuclear fuel rod claddings. The method of this invention comprises melting of the alloy, β-forging, β-quenching, hot-working, vacuum annealing, cold-working, intermediate annealing and final annealing, whereby the niobium concentration in the α-Zr matrix decreases from the supersaturation state to the equilibrium state to improve the corrosion resistance of the alloy. Such zirconium-based alloys containing niobium are usefully applied to nuclear fuel rod cladding of the cores in light water reactors and heavy water reactors.
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Baek Jong Hyuk
Choi Byoung Kwon
Jeong Yong Hwan
Jung Youn Ho
Lee Myung Ho
Korea Atomic Energy Research Institute
Korea Hydro & Nuclear Power Co., Ltd.
Wyszomierski George
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