High-cycle fatigue properties of FBR grade type 316ss at elevated temperatures

Kato, Shoichi ; Furukawa, Tomohiro  ; Yoshida, Eiichi

It is known that the cyclic thermal stress caused by the thermal striping is occurred at the parts which the coolant of the different temperatures mixes in FBR plants, and the maximum number of cycles in the service life reaches to 10-10 cycles. So, it is important to understand experimentally the relationship between the mechanical strength and the damage mechanism in the high cycle fatigue region. This report summarizes about the results of the high cycle fatigue properties of a candidate material for FBR structures, FBR grade type 316 stainless steel (316FR).