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"Titan" magazine ¹3 2011 | |
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"Titan" magazine, ¹3/2011  Editorial board Edition: 3, Orshanskaya Str, Moscow, 121552 Russia. Tel. +7 (495) 788-32-82 isat91@gmail.ru http://titan-association.com/ Subscribe Content: A. Alexandrov. Editor column. MATERIALS SCIENCE. K. Senkevich, S. Shlyapin , M. Knyazev. Effect of hydrogen on the sintering of rapidly solidified powders alloy VT10. The process of sintering of rapidly solidified powders from titanium alloy VT1-0 in the initial and hydrogenated state was investigated. It was established that the alloying of titanium powders by hydrogen allows activate the diffusion processes during sintering. This leads to the increasing of the sintered contacts width and the shrinkage of the sintered samples. The possibility of the optimizing of the technology of porous titanium materials from rapidly solidified powders by reducing the sintering temperature and time due to hydrogen alloying was shown. Keywords: porous materials rapidly solidified titanium powders, thermohydrogen. V.Travin , L.Ivanova , I.Kozlova , V.Vodopjanov. Resistance of titanium alloys to static and low-cycle loadings in concentration zones. Questions of static and low-cycle strength of high-strength welded pseudo-alpha titanium alloys marks of 5Â and 37 are considered. Defects and destructions of power equipment details arise mainly in zones of stress concentration. Effective resistance of materials to static and repeatedly-static loadings in these zones is possible at the combination high strength and plastic properties. It is established that strength of a design in stress concentration zone at elastic-plastic condition should be estimated by two parameters: stress and deformations. On results of low-cycle tests it is shown, that the investigated titanium alloys in stress concentration zone at the high temperatures possess sufficient low-cycle strength. Keywords: high-strength welded titanium alloys, static and low-cycle loading, stress concentration zones, power equipment, low-cycle strength. SEMI-PRODUCTS MANUFACTURING TECHNOLOGIES. Yu.Loginov, A.Ershov, V.Kotov. System " DEFORM " testing in a mode of calculation of strains at extrusion of the titan in 2d - and 3d-statements. Decisions of stress-strain condition of extrusion in system DEFORM are carried out. Decisions have shown prevalence radial deformation components in comparison with tangential component in peripheral layers of article at small deformations that should lead to development of a radial texture. By comparison of results of calculation of the stress-strain condition by two methods DEFORM-2D and DEFORM-3D distribution of deformations appears various with different degree of deviations. Keywords: extrusion, titanium, mathematical modeling, tangential deformation, radial deformation. O.Sobko-Nesteruk, N.Tretyak, N.Chayka, V.Vasyura, Yu.Neporozhniy, V.Vakhrusheva, M.Medvedev, T.Buryak. Using the hollow ingots made of VT1-0 by method electron-beam melting for hot-pressed pipes production. The results of experimental researches on reception hollow ingots from an alloy VÒ1-0 by method electron-beam melting with cold hearth are given. The technology of fabrication hot-pressed pipes directly from cast hollow ingot is offered. The results of researches of structure and mechanical properties received pipes are submitted. Keywords: titanium alloy, electron-beam melting, hollow ingot, pipe, pressing, structure, mechanical properties. SEMI-PRODUCTS MANUFACTURING TECHNOLOGIES. V.Fedirko, I.Pohreliuk. Surface engineering of titanium alloys by thermal diffusion saturation in controlled gas media. The principles of surface engineering of titanium alloys during thermal diffusion saturation from controlled gas atmospheres are stated. The physicochemical and technological approaches to the formation of coatings based on binary and ternary interstitial compounds of the regulated phase-structural state with an appropriate level of functional properties are systematized. The obtained coatings were analyzed in the terms of functional fitness. Keywords: surface engineering, titanium alloys, nitriding, boriding, oxynitriding, carboxidation, carbonitriding, corrosion resistance, wear resistance. TITANIUM APPLICATION. D.Gusev, M.Kollerov, E.Oreshko, S.Rudakov, P.Korolev. Evaluation of the biomechanical compatibility of implantable support plates of titanium-based and nickel-titanium alloys by computer simulation. The mechanical behavior of support plates for the correction of funnel chest deformation of steel and titanium-based and nickel-titanium alloys in conditions close to operational was investigated. The finite element method applied to calculate the stress-strain state of support plate - sternocostal complex. Calculations showed that the use of titanium and TiNi plates reduces the overload of tissues sternum in contact with the implant. Keywords: titanium based alloys, titanium nickelide, osteosynthesis, bone, chest, base plate, stiffness, method of finite elements. V. Topolskiy, S.Akhonin, G.Grigorenko, I.Petrichenko. Development of new titanium biocompatible alloys for orthopaedics and stomatology. Physical and chemical properties of titanium alloys are examined, which cause its wide application in orthopaedics and stomatology. Mechanical properties of Ukrainian-made new non-vanadium titanium alloys of different alloying systems for endoprosthesis and stomatological implants production are presented, also its high biocompatibility and corrosion resistance is shown. Structural and phase composition of developed alloys and its welded joints is analyzed. Keywords: titanium alloys, biocompatibility, corrosion stability, mechanical properties. TITANIUM MARKET. A.Alexakhin , A.Zhaglovskaya , O.Skryabin , E.Suslov. The sociality-directed estimation of factory business (in titanium manufacture). Social and economic problems of activity of the titanium enterprise and responsibility of the higher management before region and labor collective in business are considered. Keywords: business, corporate social responsibility, enterprise, titanium production, costs, control account. Events and anniversaries . L.Fokin, V.Chekhovskoi. A new reference book “ Handbook of titanium-based materials: thermophysical properties, data and studies”. The brief information about new reference book on the thermophysical properties of titanium and titanium-based alloys prepared by the authors of the Joint Institute for High Temperature RAS and printed by the Begell House Inc., 2007 are presented. The main chapters are: density, heat capacity, electrical conductivity, thermal conductivity and optical characteristics. Keywords: titanium, titanium alloys, density, heat capacity, thermal conductivity, electrical conductivity, optical properties, reference data. Requirements for article registration in "Titan" journal |
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