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Information × Registration Number 0212U008320, 0112U005111 , R & D reports Title Modification of metal surface by interstitial elements as the method to increase the resource of products from titanium alloys popup.stage_title Head Tkachuk Oleh, Registration Date 17-12-2012 Organization Karpenko Physico-Mechanical Institute of the National Academy of Science of Ukraine popup.description2 It is determined: relationship between gas-dynamic parameters of chemicothermal treatment, solid solution hardening of surface layers of metal and its phase-structural state; influence nonstoichiometry of titanium nitride TiNх on the degree of its modification by oxygen; dependence between the parameters of oxygen-containing medium and phase-structural state of surface layers at the modification of titanium nitride by oxygen; wear intensity of VT14 titanium alloy with oxynitride coating in the pair of friction with steel is on an order below than in the pair of friction with bronze; regulated modification of surface at solid solution hardening of surface layer of metal raises the fatigue life increase at the terms of low-cycle pure bending and cyclic tension on ~ 7…10 %; decrease of intensity of wear of VT14 titanium alloy with oxynitride coatings in a pair with steel and bronze; decrease of corrosion rate of oxynitride coatings in highly concentrated acids on 1-2 orders; universality of effect of increase of life time of titanium alloys at "optimum" level of solid solution hardening under different load conditions was revealed: at the low-cycle pure bending by ~ 10 ... 15%; at the high-cycle bending with rotation - 25 ... 35%; at the delayed fracture under prolonged static load based on 1000 h - 7 ... 10%; increases of life time of alpha- and pseudo-alpha-titanium alloys is conditioned by the formation of maximum compressive residual stress, grinding of sub-grains' size and the formation of ordered cellular dislocation structure. Product Description popup.authors Ткачук Олег Володимирович Труш Василь Степанович popup.nrat_date 2020-04-02 Close