Effects of temperature variation and void swelling on high nickel austenitic stainless steels, 2

Watanabe, Hideo*; Yoshida, Naoaki*; Yamashita, Shinichiro   ; Inoue, Toshihiko 

The fuel pin cladding tubes undergoes temperature change by shuffling and burning of fuel pins. The high nickel austenite stainless steel comes under review of alternative materials of high burnup fuel pin cladding tubes. The high nickel steel was irradiated by thermal changing condition to evaluate void formation mechanism. By thermal changing irradiation, the dislocation loop density remains static, and the void number density is rising.