Chernolevskyi M. Mechanism of interstitial atoms' transfer by soliton excitation of one-dimensional chain under the action of pulse impact

The mechanism of dislocation generation near the surface under pulse impact is proposed. It is shown that the mechanism has threshold and the minimum magnitude of pulse impact force is defined by the Peierls tension. Numeric simulations prove that dislocations travel inside crystal without dissipation. Non activation mechanism of anomalous mass transfer to macroscopic distances was studied. It was shown that under pulse impact dislocations are moving inside crystal with constant speed and create internal tensions field. Criteria of dislocation binding interstitial atom and transferring the interstitial atom inside crystal were formulated. Parameters of interaction between interstitial atom and elastic dislocation field were defined; a stable complex of dislocation and interstitial atom configuration can emerge and mass is transferred to macroscopic distances. It was proved that due to the creation of the complex mass transfer in crystal is possible with typical depths of microns and velocities of around the speed of sound. In context of proposed mass transfer mechanism, it was shown that mass transfer depths are mainly defined by the magnitude and duration of pulse impact and that mass transfer is not due to a process of diffusion.