Компьютерное моделирование процессов самоорганизации и наноструктуирования в металлах и сплавах

Abstract

The goal of this paper is to study self-organization processes that cause nanostructural evolution in nonlinear crystal media. The computer simulation was used to investigate the interaction between lowenergy ions and crystal lattices. Energy transmitted to target atoms is less than the threshold needed to form point defects but sufficient for nonlinear oscillation excitation in ion subsystem of a lattice. We showed that nonlinear oscillations become excited in the chains after low-energy ion impact and as a result of them the whole atoms become stabilized in new positions, which results in the formation and development of new metastable atomic groups (nanoclusters). It is clusters that provide new complexes of physical and mechanical properties for lattices (irradiated materials). Low-energy ion irradiation may be used to develop new hardening technologies of metals and alloys on the basis of the formation of nanoelements in them.