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Embrittlement Behavior of Zirconium Alloy in Quenching Heat Treatment  

Kim, Jun Hwan (Zirconium Fuel Cladding Development Team, Korea Atomic Energy Research Institute)
Lee, Jong Hyuk (Zirconium Fuel Cladding Development Team, Korea Atomic Energy Research Institute)
Choi, Byoung Kwon (Zirconium Fuel Cladding Development Team, Korea Atomic Energy Research Institute)
Jeong, Yong Hwan (Zirconium Fuel Cladding Development Team, Korea Atomic Energy Research Institute)
Publication Information
Journal of the Korean Society for Heat Treatment / v.17, no.4, 2004 , pp. 216-222 More about this Journal
Abstract
Study was focused on the quenching embrittlement property of Zircaloy-4 cladding simulated Loss Of Coolant Accident (LOCA) environment in terms of high temperature oxidation and phase transformation. Property in LOCA condition of advanced cladding that contained Nb element was also investigated. Claddings were oxidized at given temperature and given time followed by water quenching. The results showed that ${\beta}$ phase which formed at quenching stage has an influence on cladding property. In case of advanced cladding, Nb retards cladding oxidation, thus enhances quenching resistance.
Keywords
Zirconium cladding; Water quenching; Oxidation; Niobium;
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