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Information × Registration Number 0205U007064, 0104U003133 , R & D reports Title Structure, phase compound and mechanical properties of quasicrystalline alloys in Al-Cu-Fe system popup.stage_title Head Voloshko Svitlana Mykhajlivna, Registration Date 15-12-2005 Organization National Technscal University of Ukraine "Kiev Polytechnic Institute". popup.description2 Processes regularities of phase composition and structure formation, mechanical characteristics modification of Al-Cu-Fe-based quasicrystal alloys and gallium diffuse mass transfer under thermomechanical machining are established using a complex of the modern physical research techniques such as X-ray diffraction analysis, electron diffraction investigation, Auger electron spectroscopy, secondary ion mass spectroscopy, electron probe microanalysis, electron microscopy, etc. The condition of quasicrystalline states formation and realization of transformation "quasicrystalline phase - crystal phase", in particular at different stages of gallium diffusion are defined. The intervals of thermal stability for quasicrystalline alloys with different content of additional crystal phases are established. The mechanisms models of structural and phase transformation in system Al-Cu-Fe developed at a gallium reactive diffusion under conditions of a durational excerpt on air, thermal and hydrostatic machining in theinterval temperatures at different pressure values. The common regularities of chemical elements distribution in the surface field, volume, at the grain boundaries and phases of Al-Cu-Fe, Cu-Fe-Ga systems are established using data analysis of spectral methods with the purpose of determination of concentration modifications at different temperatures and structural conditions. The mechanical characteristics of Al-Cu-Fe, Cu-Fe-Ga alloys are obtained. The interdependences between process parameters of laser ablation and a complex of mechanical characteristics are established. The most important physical characteristics which define considered processes is determined. The quantitative diffuse parameters are obtained using mathematical models and results of computer asimulation. Product Description popup.authors popup.nrat_date 2020-04-02 Close