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Information × Registration Number 0218U000481, 0117U001913 , 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 14-02-2018 Organization Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine popup.description2 For the first time the regularities of the change of cyclic crack resistance (CCR) depending on the technological modes of treatment of alloys of the Ti-Si-Nb system have been established, and on the basis of the proposed complex parameter of structural strength the ways of optimization of these alloys for use as materials of implants have been substantiated. It was established that according to the characteristics of strength and cyclic crack resistance, the alloy Ti-1,25Si-20,9Nb after thermal deformation machining inferior to the alloy Ti-1,0Si-18,7Nb after screw rolling. After the quenching of the CCR specification, the Ti-1.0Si-18.7Nb alloy increases, and after the quenching and release at maximum strength, the reduction of the CCR characteristics has already been recorded, apparently due to the dispersion strengthening of the secondary phase. Comparison of kinetic diagrams of fatigue failure and the analysis of the structural strength of the investigated alloys as well as the literature data shows that within the threshold regions of the diagrams, the cast alloy Ti-1,0Si-18,7Nb after screw rolling and quenching is at the level of foreign alloys of type Ti-6Al -4V; in the middle and high-amplitude sections of the chart inferior to the alloy Ti-6Al-4V produced in the United States. For the optimal combination of strength and threshold cyclic crack resistance, the alloy Ti-1,0Si-18,7Nb after screw rolling and hardening and tempering and tempering has been developed in the IPAM of the National Academy of Sciences of Ukraine, while the Ti-6Al-4V alloy is predominant. An optimum combination of durability and critical cyclic crack resistance is the alloy Ti-1,0Si-18,7Nb after screw rolling and quenching.5481 Product Description popup.authors Івасишин Андрій Дмитрович Василів Богдан Дмитрович Подгурська Вікторія Ярославівна popup.nrat_date 2020-04-02 Close