Effect of impurity atoms on microstructural evolution of irradiated -iron; Cluster dynamics modeling

Abe, Yosuke  ; Tsuru, Tomohito   ; Jitsukawa, Shiro

In this study, in addition to adequately model the 1D reaction kinetics of SIA loops in the framework of a production bias model, reaction kinetics associated with carbon impurity atoms present in -iron have been formulated to take into account the trapping effect of glissile SIA loops by vacancy-carbon (V-C) complexes. Results of calculated defect accumulation behavior of neutron irradiated -iron show that the developed CD model can successfully reproduce the number density of SIA loops when the applied impurity concentration is the same order as experimental one. The dependence of dose rate is discussed in detail.