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Information × Registration Number 0219U004103, 0118U000490 , R & D reports Title Establishing the laws of the influence of chemical and structural-phase composition on the electrochemical properties and the resistance to corrosion-fatigue destruction of Ti-Si composites of Ti Si Nb (Zr, Sn, Al) and Ti (Nb) Si (Al) C (N) systems under the action of physiological media popup.stage_title Head Ostash Orest, Registration Date 12-04-2019 Organization Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine popup.description2 The negative influence of rotational forging on plasticity and the cyclic crack resistance (CCR) of this alloy in the quenched state were revealed. For additional doping with zirconium (alloy Ti-18Nb-3,9Zr-1,0Si) and the use of free forging instead of rotation, after screw rolling and hardening, a significant increase in plasticity and cyclic fatigue toughness was recorded, but the strength and threshold of fatigue were reduced. Analysis of the structural strength diagrams shows that the strength of the fatigue strength and the fatigue threshold are optimal for the alloy Ti-18,7Nb-1,0Si, which predominates the alloy of the Ti-6Al-4V alloy produced in the United States. However, according to the CCR alloys developed by the IPAM of the National Academy of Sciences of Ukraine still yield considerably the alloy of the USA production. By changing the structural strength parameter, the Ti-18,7Nb-1,0Si alloy after screw rolling and quenching is promising for further optimization based on strength characteristics and CCR, and also taking into account the plasticity of materials - Ti-18Nb-3,9Zr-1,0Si alloys and Ti-11,6Nb-3,5Zr-1,12Si after free forging, screw rolling and quenching. It has been established that the corrosion and corrosion-mechanical behavior of alloys of Ti-Nb-Si and Ti-Al-V systems is similar and these alloys are characterized by high passivity in 3% NaCl solution. To increase the resistance to corrosion and mechanical destruction of the developed Ti-Nb-Si and Ti-Nb-Zr-Si alloys, it is necessary to search for ways to optimize the grain size of the matrix and the distribution of the silicide phase.5481 Product Description popup.authors Василів Богдан Дмитрович Горак Ігор Степанович Подгурська Вікторія Ярославівна Шаповалов Георгій Олександрович popup.nrat_date 2020-04-02 Close