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Microstructure and Corrosion Behavior of Zr Alloys with Manufacturing Process  

Kim, H.G. (Zirconium Fuel Cladding Team, KAERI, Korea Nuclear Fuel Co., Ltd.)
Choi, B.K. (Zirconium Fuel Cladding Team, KAERI, Korea Nuclear Fuel Co., Ltd.)
Kim, K.T. (Zirconium Fuel Cladding Team, KAERI, Korea Nuclear Fuel Co., Ltd.)
Kim, S.D. (Zirconium Fuel Cladding Team, KAERI, Korea Nuclear Fuel Co., Ltd.)
Park, C.H. (Zirconium Fuel Cladding Team, KAERI, Korea Nuclear Fuel Co., Ltd.)
Jeong, Y.H. (Zirconium Fuel Cladding Team, KAERI, Korea Nuclear Fuel Co., Ltd.)
Publication Information
Journal of the Korean Society for Heat Treatment / v.18, no.5, 2005 , pp. 288-296 More about this Journal
Abstract
The corrosion behaviors of Zr-based alloys were very sensitive to their microstructures which were determined by manufacturing process. The specimens of Zr-based alloy named as HANA-4 for nuclear fuel cladding were investigated in order to get the optimized manufacturing process such as the intermediate annealing temperature and cold working steps after the ${\beta}$ quenching. From the microstructural analysis, cold worked microstructure of the samples was changed to the recrystallized microstructure by performed process. The corrosion behaviors of HANA-4 alloy were affected by the different manufacturing process. The ${\beta}$-Zr phase was formed in the matrix and the Nb concentration in the ${\beta}$-Zr phase was increased as progressing the manufacturing process. So, it was found that the corrosion rate of HANA-4 alloy was affected by the Nb concentration in the matrix.
Keywords
Zr; Fuel cladding; HANA alloy; TREX; Heat treatment; Microstructure; Corrosion;
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