Abstract:
Hoop tensile test were performed on zirconium（such as N36, Zr-4 and X） ring specimens at 350℃ and 400℃ to study the iodine induced stress corrosion cracking（I-SCC） behavior of zirconium cladding in 10~2 Pa, 10~3 Pa and 10~4 Pa iodine partial pressure environment. Different levels of I-SCC happened with N36, Zr-4 and X samples at special iodine partial pressure with the maximum load, and the fracture energy dropped down quickly as result, and N36 maximum load and fracture energy dropped slower at same test situation.
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