Modeling of the processes of primary radiation damage of the alloy Fe-1.8at.%Ni by the method of molecular dynamics

The results of computer simulation of primary radiation damage processes for Fe-1.8ат.%Ni alloy by means or molecular dynamics method are presented in this paper. N-body interatomic potentials were used for the simulation. Atomic displacement cascades for primary knock-out atom energy range from 0,1 to 20 keV were considered. Evaluations of numbers of point defects which survive in cascade as well as results on numbers and sizes of vacancy and interstitial clusters formed in the cascade were obtained. The noticeable influence of nickel in considered concentration on number of surviving defects is not detected. At the same time it is found out that number of interstitial forming clusters, which consist of not more than three interstitials, in pure iron is approximately half as much again than in Fe-Ni alloy.