Mass Transfer Mechanism in Real Crystals by Pulsed Laser Irradiation

TL;DR

This paper investigates the dislocation-interstitial mechanism of mass transfer in metals under pulsed laser irradiation, combining theoretical modeling with experimental validation to explain laser-induced mass transfer processes.

Contribution

It introduces a dislocation-interstitial mechanism model for laser-stimulated mass transfer in real crystals, supported by theoretical calculations and experimental data.

Findings

Theoretical evaluations match transmission electron microscopy data.

Dislocation-interstitial mechanism explains laser-induced mass transfer.

Good agreement between theory and experiment supports the proposed mechanism.

Abstract

The dynamic processes in the surface layers of metals subjected activity of a pulsing laser irradiation, which destroyed not the crystalline structure in details surveyed. The procedure of calculation of a dislocation density generated in bulk of metal during the relaxation processes and at repeated pulse laser action is presented. The results of evaluations coincide with high accuracy with transmission electron microscopy dates. The dislocation-interstitial mechanism of laser-stimulated mass-transfer in real crystals is presented on the basis of the ideas of the interaction of structure defects in dynamically deforming medium. The good compliance of theoretical and experimental results approves a defining role of the presented mechanism of mass transfer at pulse laser action on metals. The possible implementation this dislocation-interstitial mechanism of mass transfer in metals to other cases of pulsing influences is justified