Swelling of a V-5Fe Alloy After Irradiation in JOYO

概要

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Void swelling behavior of a vanadium iron binary alloy has been studied using JOYO as an irradiation facility. The swelling at a damage level of approximately 14dpa was as high as 30% for 600℃ irradiation, which is qualitatively consistent with the large swelling observed after FFTF/MOTA irradiation about 30dpa. The evolution of dislocation microstructure is very fast and the sink strength ratio Q is much greater than unity except for the highest damage level studied, yet the swelling rate is more than 2%/dpa. Several possible mechanisms involving segregation effects have been discussed. It has been suggested that any successful model should be capable of predicting the observed swelling rate more than 2%/dpa under condition of Q value much greater than unity.
東北大学の論文
1991-03-05