Likhoshva V. Processes of laser radiation interaction with disperse Particles in heterogeneous materials.

Українська версія

Thesis for the degree of Doctor of Science (DSc)

State registration number

0506U000063

Applicant for

Specialization

  • 05.03.07 - Процеси фізико-технічної обробки

23-01-2006

Specialized Academic Board

Д 26.002.02

Publishing and Printing Institute of Igor Sikorsky Kyiv Polytechnic Institute

Essay

The detailed theoretical investigation, mathematical and physical modeling of phenomena taking place under interaction between laser beam and liquid and solid metals and alloys was carried out. The behaviors of non-metal inclusions in cast irons and steels and their role in a process of structure-phase state formation in a zone of laser radiation influence were discovered. The principle of formation of emulsion and suspension melts under conditions of laser irradiation of solid materials and powder blends were determined. The principles of obtaining the laser composite surface fusings by freezing emulsion and suspension melts were formulated. The processes of making melt the amorphous using laser, obtaining and coatication of amorphous-microcrystalline coatings were proved. During the investigation of laser irradiation of metal melt surface processes there were discovered the changes of structure and phase content of treated aluminum alloy was carried out. The theoretical and experimental researchesof gas-laser flow interaction with model and metal liquids during it influence on the surface and under conditions of submersion were made. The new methods of obtaining cast composite materials on the base of creation of emulsion and suspension melt under influence of gas-laser flow were developed.

Files

Similar theses