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Information × Registration Number 0223U000118, 0122U002114 , R & D reports Title Creation of porous titanium materials with high damping properties popup.stage_title Head Stasiuk Oleksandr O., Кандидат технічних наук Registration Date 03-01-2023 Organization Institute of Metal Physics. G.V. Kurdyumov of the National Academy of Sciences of Ukraine popup.description2  The report consists of: 120 pages, 45 figures, 5 tables, 130 citations. The following research methods were used: laser diffraction analysis, scanning electron microscopy, x ray diffraction phase analysis, mechanical testing, RFDA Professional is automated impulse excitation Engineering (IET). Porous titanium materials with different proportions of pores were produced, and their mechanical and elastic characteristics were investigated. Porous titanium materials with different proportions of pores were produced, and their mechanical and elastic characteristics were investigated. The study of elastic properties showed that with an increase in porosity from 42% to 58%, the elastic properties of porous materials change greatly: the Young's modulus decreases from 45 GPa to 16 GPa, and the damping capacity of the material increases from 1.8 to 2.7. Porosity of a Ti–Al alloy with a different proportion of aluminum was synthesized. When 20% aluminum is added to the mixture, two phases are present in the synthesized material: Ti3Al and pure titanium, and porosity is 30%. In the material synthesized with 30% Al, two phases are present: γ-TiAl and α2-Ti3Al, and the residual porosity is 40%. It was demonstrated the possibility of manufacturing porous alloys of the Ti–Al system, which have satisfactory mechanical properties (yield strength 130-300 MPa, deformation 10-15%), and are characterized by high energy absorption capacity (the stretching time of elastic waves is 0.3-0.4 seconds, and the damping capacity is 1-1.7). The general regularities of the formation of the porous structure of titanium materials, as well as factors and mechanisms of influence on the process of controlled pore formation, were established, and the influence of the volume fraction of pores on mechanical properties was studied. The possibility of using porous titanium materials as elements for energy dissipation under dynamic loads was investigated. Product Description popup.authors Oryshych Denys V. Pakula Dmytro L popup.nrat_date 2023-01-03 Close