Alloys based on titanium (C22C14)

C   Chemistry; metallurgy(318327)
C22C14                 Alloys based on titanium(344)
ethod for producing porous products from quick-cooled powders of titanium and its alloys // 2641592
FIELD: metallurgical engineering.SUBSTANCE: method includes hydrogenation of powders, sintering in vacuum and cooling to room temperature. Hydrogenation of the powder is carried out in demountable or integral forms of steel or glass, corresponding to the shape of the article, at a temperature of 600-800 °C to a hydrogen concentration of 0.1-1% by weight, followed by vacuum annealing of the article at a temperature of 600-800 °C for 30-120 minutes, destroy or disassemble the moulds and sinter the resulting prepared semifinished product in a vacuum oven at a temperature of 900-1200 °C for 30-120 minutes.EFFECT: production of porous products without using heat-resistant high-temperature moulds for sintering is provided.3 ex

ethods for processing titanium alloys // 2637446
FIELD: metallurgy.SUBSTANCE: method for grinding a billet grain size containing titanium alloy includes beta annealing of the billet, cooling to a temperature below the beta transition temperature of the titanium alloy, and comprehensive forging of the billet. Comprehensive forging involves forging on the press in the direction of the first orthogonal axis of the billet at a deformation rate sufficient for adiabatical heating of the billet inner area, forging the billet on the press in the direction of the second orthogonal axis of the billet with a deformation rate sufficient for adiabatical heating of the billet inner area, forging the billey on the press in the direction of the third orthogonal axis of the billet with a deformation rate sufficient for adiabatic heating of the billet inner area, and repeating at least one forging on the press to achieve total true deformation of at least 1.0. The temperature for forging the billet is in the temperature range from 100°F (55.6°C) below titanium alloy beta transition temperature to a temperature of 700°F (388.9°C) below titanium alloy beta transition temperature, and the deformation rate used during forging on the press is in the range of 0.2s-1up to 0.8s-1.EFFECT: produce fine-grained alloy structure at higher deformation rates.40 cl, 16 dwg, 1 tbl, 6 ex
ethod of producing intermetallide orthoalloy based on titanium // 2635204
FIELD: metallurgy.SUBSTANCE: proposed method includes mixing of titanium and niobium powders with provision of mechanical alloying of titanium powder with niobium powder for 8-24 h, then mechanical mixing of niobium-alloyed titanium powder with aluminium powder is carried out. The produced powder mixture of alloy components is applied on metal platform with layers of 35-150 um thickness with laser fusion of layers with permanent continuous laser with power of 400-1000 W and with scanning speed of 300-1000 mm/s.EFFECT: high chemical homogeneity.3 cl, 3 ex, 1 tbl
ethod of production of titanium-containing metallic powders // 2634866
FIELD: metallurgical engineering.SUBSTANCE: method includes etching of ingots of titanium-containing metallic material, washing, hydrogenation of ingots, grinding of the resulting hydride into powder, dehydrogenation of the obtained hydride powder by thermal decomposition during vacuumizing, and re-grinding of the dehydrated powder. The etching is carried out in a solution of a mixture of hydrochloric acid and hydrofluoric acid containing 90 vol. % of hydrochloric acid and 10 vol. % of hydrofluoric acid, the dehydrogenation is periodically interrupted and exposed an inert gas to impact on the hydride powder for 55-60 seconds at an inert gas pressure of 0.5-0.7 MPa. The first impact of the inert gas on the powder of hydride is carried out after 1-1.5 hours after the start of dehydrogenation, and subsequent impacts of the inert gas are produced after 55-60 minutes of dehydrogenation during vacuumizing.EFFECT: reduction of the hydrogen content in fine-dispersed titanium-containing powders of a narrow granulometric composition.3 cl, 1 tbl

ethod for producing "superalloy" based on titanium, aluminium, iron, chromium, copper and silicon from water suspension of particles containing compounds of these ore elements, and device for its implementation // 2634562
FIELD: metallurgy.SUBSTANCE: group of inventions relates to the production of a superalloy consisting of titanium, aluminium, iron, chromium, copper and silicon from water aqueous suspension of ore particles containing titanium, aluminium, iron, chromium, copper and silicon compounds. The method comprises generation of magnetic fields placed on portions of the processed raw materials, reduction of metals from ores with continuous mixing of the raw materials, followed by accumulation and formation of the product in the form of an annular columnar structural formation of the superalloy. The device comprises a horizontal housing consisting of two parts, one of which is removable and is made in the form of a hinged removable cap, connected by means of annular flat flanges with its fixed base in the form of a cylindrical shell.EFFECT: possibility of producing the mentioned alloy directly from crude ore.2 cl, 5 dwg
Titanium-based casting alloy // 2634557
FIELD: metallurgy.SUBSTANCE: invention relates to weldable titanium-based casting alloys and is intended for producing shaped castings. The titanium-based alloy used in duty welded-cast structures in power-plant engineering at a temperature of up to 450°C. The castable titanium-based alloy contains, wt %: aluminium 5.0-6.0, molybdenum 1.0-2.0, vanadium 1.0-2.0, carbon 0.06-0.14, oxygen 0.05-0.12, hydrogen 0.002-0.008 iron 0.02-0.15, silicon 0.05-0.08.EFFECT: alloy is characterized by high creep strength and high weld quality.2 tbl, 1 ex
Intermetallic tial-based alloy // 2633135
FIELD: metallurgy.SUBSTANCE: nonmetallic TiAl-based alloy contains, at %: aluminium 44-46, niobium 5-7, chromium 1-3, zirconium 1-2, boron 0.1-0.5, lanthanum ≤0.2, titanium is the rest.EFFECT: alloy is characterized by fine-grain isotropic microstructure, low content of dissolved oxygen, high strength and plasticity.1 tbl, 2 dwg
ethod for producing powder alloy tini with high level of mechanical properties // 2632047
FIELD: metallurgy.SUBSTANCE: process comprises hydride-calcium synthesis of powder mixture, its consolidation by pressing and vacuum sintering, followed by thermomechanical treatment. The powder mixture is prepared from Ni or a mixture of Ni and NiO with TiO2 and calcium hydride, and heat treatment is carried out at 1100-1300°C for at least 6 hours, then the produced powder mixture is treated with water and hydrochloric acid solution, dried and classified. Consolidation of the powder mixture is carried out by pressing with formation of a blank of required shape which is subjected to sintering in vacuum at residual pressure not higher than 10-4 mm hg at temperature not less than 0.95 of alloy melting temperature for at least 2 hours with formation of residual porosity of not more than 5%. Thermomechanical treatment of the blank is carried out at temperature not higher than 950°C true deformation e≥0.7, wherein e=In(S1/S2), where S1 and S2 - are initial and final cross-sectional areas of blank deformable material.EFFECT: produce blanks with shape memory effect, controlled phase and chemical compositions, high strength and ductility characteristics.2 cl, 3 ex, 12 tbl
ethod for preparing alloy billets based on tini intermetallide // 2630740
FIELD: metallurgy.SUBSTANCE: method involves preparing a powder mixture of TiO2, Ni and/or nickel oxide and calcium hydride, heat treating the resulting mixture at a temperature of 1100-1300°C for, at least, 6 hours with the provision of hydride-calcium synthesis of the alloy powder based on the TiNi intermetallide. The resulting alloy powder is treated with water and then with a solution of hydrochloric acid, after which the washed powder is dried and classified. The resulting powder is consolidated by pressing to form a compact of the desired shape, which is sintered in a vacuum at a residual pressure of not higher than 104 mm Hg. at a temperature of not less than 0.95 of the alloy melting temperature for, at least, 2 hours with the formation of a residual porosity of not more than 5%.EFFECT: production of billets with shape memory effect, minimum porosity, controlled phase and chemical compositions is ensured, and the temperatures of direct and reverse martensitic transformations are reproducible in the resulting alloys.2 cl, 4 ex, 12 tbl
ethod to produce electrodes of alloys based on titanium aluminide // 2630157
FIELD: metallurgy.SUBSTANCE: method comprises production of cast intermetallic semifinished product by centrifugal SHS casting method using a reaction mixture with the following component ratio, wt %: target composition 57.5-62.0, energy additive 35.0-40.0, CaF2 flux 2.5-5.0, and subsequent vacuum induction remelting of the resulting semifinished product in water-cooled copper crucible, introducing powder master alloy into the melt 1-2 minutes before it is poured into the crystalliser and consisting of pressed aluminium-nanopowder mixture with specific surface area of 5÷30 m2/g in amount providing 0.5-7 vol. % of nanopowder in the melt. A mixture of TiO2, Ti, Al, Ca, Nb2O5 and Cr2O3 are used as the target, and CaO2 are used as energy additive mixture.EFFECT: invention allows to develop integral technology for producing electrodes of titanium aluminide-based alloys by centrifugal atomisation of electrode material and producing granules for additive 3d sintering technologies for complex products of heat-resistant metal materials.3 cl, 10 tbl, 3 ex

Titanium alloy with improved properties // 2627312
FIELD: metallurgy.SUBSTANCE: production method of the titanium alloy blank includes the steps at which the titanium alloy ingot is obtained, including wt %: from 6.0 to 6.7 aluminium, from 1.4 to 2.0 vanadium, from 1.4 to 2.0 molybdenum, from 0.20 to 0.42 silicon, from 0.17 to 0.23 oxygen, up to 0.24 iron, up to 0.08 carbon, titanium and unavoidable impurities remained, perform the first heat treatment of the alloy at the temperature of 40 and 200 Celsius degrees above the beta-transus temperature and forging. Then, the second heat treatment is carried out at the temperature of 30-100 Celsius degrees below the beta-transus, the alloy rolling into the plate, bar, or flat bar and provide annealing at the temperature below the beta transus.EFFECT: received blanks have high strength, durability characteristics at low cycle fatigue.21 cl, 11 dwg, 4 tbl

Intermetallide titanium-based alloy and product thereof // 2627304
FIELD: metallurgy.SUBSTANCE: invention can be used for manufacturing parts of aviation and space equipment, long-working up to 700°C. The intermetallide titanium-based alloy contains, wt %: aluminium 10.5-12.5, niobium 38.5-42.0, molybdenum 0.5-1.5, vanadium 0.5-2.0, zirconium 1.0-2.5, tungsten 0.3-1.5, tantalum 0.1-0.8, silicon 0.1-0.25, yttrium 0.02-0.6, titanium and impurities - the rest.EFFECT: plasticity at room temperature and heat resistance at temperatures up to 700 degrees increase.3 cl, 1 dwg

Thermomechanical processing of nickel-titanium alloys // 2627092
FIELD: metallurgy.SUBSTANCE: manufacturing method of the nickel-titanium rolled product involves hot forging of the ingot at the temperature greater than or equal to 500°C with producing the billet, hot rod rolling of the billet at the temperature greater than or equal to 500°C to produce the blank, cold drawing of the blank at the temperature of less than 500°C with producing the bar and hot isostatic pressing (HIP) for at least 0.25 hours in the HIP furnace, operating at the temperature in the range from 700°C to 1,000°C and pressure in the range from 3,000 pounds per sq. inch (20.7 MPa) up to 50,000 pounds per sq. inch (344.7 MPa).EFFECT: density of non-metallic inclusions per unit area decreases, which ensures the high surface quality, and high fatigue life of the product.27 cl, 8 dwg, 10 tbl, 5 ex

ethod of intermetallic alloys processing, based on titanium gamma aluminide // 2625515
FIELD: metallurgy.SUBSTANCE: method of intermetallic alloys processing, based on titanium gamma aluminide, which includes directional, floating-zone refining of the casting cylindrical billet from the intermetallic alloy, based on the gamma titanium aluminide in the inert gas atmosphere. Directional, floating-zone refining of the billet is carried out in the vertical reactor. Heating and melting of the billet is carried out by means of the inductor, moving from the bottom to the top with the constant speed of 150 mm/h with the power, providing the melted zone length, not exceeding the casting diameter and the axial temperature gradient of at least 300°C/cm, using the alternating induction current with the frequency in the range of 10 kHz - 1 MHz. Argon or helium is used as the inert gas.EFFECT: yield limit and alloys strength values are increased, the mechanical properties uniformity is enhanced by creating the ordered lamellar-granular phase alloys microstructure.2 cl, 3 dwg, 1 tbl, 1 ex
Alloy // 2625148
FIELD: metallurgy.SUBSTANCE: alloy contains, wt %: aluminium 25.0-35.0; vanadium 25.0-35.0; niobium 5.0-15.0; titanium - the rest.EFFECT: improvement of alloy properties.1 tbl
Intermetallic tial based alloy // 2621500
FIELD: metallurgy.SUBSTANCE: invention relates to the field of metallurgy, in particular master TiAl-based alloys with a predominant phase of γ-TiAl, and can be used in the manufacture of components of aircraft gas turbine engines. The TiAl-based alloy contains at %: aluminium 44-47, niobium 5-8, chromium 1-3, zirconium 1-3, Ti - the rest. The total content of transition metals Nb, Cr and Zr is no more than 12 at %. The alloy has an ordered duplex structure (γ+α2)/γ/B2.EFFECT: alloy is characterized by high mechanical characteristics.1 dwg, 1 tbl
Titanium-based alloy // 2619535
FIELD: metallurgy.SUBSTANCE: titanium-based alloy contains, wt %: molybdenum 29.0-35.0; palladium 10.0-15.0; ruthenium 0.8-1.2; rhodium 2.6-3.0; titanium - the rest.EFFECT: alloy is resistant to oxidation.1 tbl

Application method of titanium aluminide and product with titanium aluminide surface // 2619419
FIELD: metallurgy.SUBSTANCE: application method of titanium aluminide coating to the metal product contains titanium aluminide cold spraying to the product to form a coating of titanium aluminide. Titanium aluminide coating includes a thin gamma/alpha2 structure, and titanium aluminide, sprayed on the product, it has a composition, including 45 wt % titanium and 50 wt % aluminum. In an embodiment of the claimed invention, the cold spraying of titanium aluminide is carried out from a powder solid raw material of alloy powder.EFFECT: high resistance to high temperature surface oxidation, products repair, subjected to fatigue failure, having damages from impacts and process damages.19 cl, 2 dwg

Titanium alloys for fasteners // 2618016
FIELD: metallurgy.SUBSTANCE: method for producing titanium alloy comprises providing presence of titanium alloy produced by using at least 50% of scrap titanium, titanium alloy annealing, wherein titanium alloy contains in wt %: aluminium 5.50 to 6.75, vanadium 3.50 to 4.50, oxygen 0.25 to 0.50, and iron 0.40 to 0.80.EFFECT: obtaining a titanium alloy with high level of oxygen and iron content, with high mechanical characteristics.13 cl, 11 dwg
Production method of composite titan-niobium powder for additive technologies // 2617572
FIELD: metallurgy.SUBSTANCE: method involves mechanical activation of titanium and niobium powders mixture with the addition of anti-agglomerating component. The mechanical activation of titanium and niobium powders mixture is carried out in the shock-friction type planetary ball mill for 10-20 min, with acceleration of grinding bodies 40 g, with the ratio of the powders mixture and grinding bodies volume equal to 1:20, and the ethyl alcohol is used as the anti-agglomerating component.EFFECT: titanium and niobium uniform distribution according to the composite volume.4 cl; 1 ex

ethod of making part made of titanium alloy ta6zr4de // 2616691
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, in particular, to production of parts from TA6Zr4DE alloy, and can be used for production of rotating parts of a turbine machine. Method of making a part of a turbine machine, made from titanium alloy TA6Zr4DE, forging a blank in an alpha/beta domain to form a preform, hot die-stamping preform to form a rough part in beta domain of titanium alloy and heat treatment. During hot die-stamping, rough part is subjected throughout to equivalent generalized deformation greater than or equal to 1.2, hot die-stamping terminating with hardening at cooling rate faster than 85 °C/min. Minimum equivalent generalized deformation is implemented and high strength is achieved.EFFECT: longer service life of parts.12 cl, 4 dwg, 1 tbl

High strength and ductility alpha/beta titanium alloy // 2616676
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, specifically to alpha/beta titanium alloys with high strength and ductility. Alpha/beta titanium alloy contains, wt%: from 3.9 to 4.5, aluminium, from 2.2 to 3.0 vanadium, from 1.2 to 1.8 iron, from 0.24 to 0.30 oxygen, up to 0.08 carbon maximum, up to 0.05 nitrogen maximum, up to 0.015 hydrogen maximum, a total of up to 0.30 other elements: less than 0.005 of each of boron and yttrium, not more than 0.10 of each of tin, zirconium, molybdenum, chromium, nickel, silicon, copper, niobium, tantalum, manganese and cobalt, and balance is titanium and unintentional impurities.EFFECT: alloy is characterized by high mechanical properties with reduced weight.22 cl, 3 dwg, 3 tbl, 3 ex
Titanium-based alloy and product made from it // 2614356
FIELD: metallurgy.SUBSTANCE: titanium-based alloy contains, wt %: aluminium 1.5-4.5;. vanadium 13.5-19.0; chrome 2.0-5.0; tin 2.0-4.0; molybdenum 0.5-2.5; zirconium 0.5-2.5; niobium 0.01-0.40; yttrium 0.005-0.150; titanium and impurities - the rest.EFFECT: alloy is characterized by high values of ductility, thermal stability, and creep strength in the thermally hardened condition, while keeping the fracture viscosity values.5 cl, 2 tbl, 4 ex
Titanium-based alloy and product made from it // 2614355
FIELD: metallurgy.SUBSTANCE: titanium-based alloy contains, weight %: aluminium 6.0-8.0, molybdenum - 0.4-1.3, tin - 1.5-3.5, zirconium 1.0-5.0 , iron - 0.05-0.4, niobium - 0.4-1.4, silicon - 0.1-0.4, tantalum - 0.2-1.0, tungsten - 0.3-1.3, beryllium - 0.01-0.15, titanium - the rest.EFFECT: alloy is characterized by high values of short-term strength.2 cl, 2 tbl, 4 ex
Gamma titanium aluminide-based alloy // 2614354
FIELD: metallurgy.SUBSTANCE: gamma titanium aluminide based alloy contains wt %: aluminium 29.0-33.0 , niobium 5.0-9.0, tungsten 1.0-2.0, molybdenum 2.0-4.0, vanadium 1.0-3.0, borium 0.003- 0.1, titanium - the rest. The molybdenum and tungsten weight ratio in the alloy is 2:1. The alloy may additionally contain the iron in the amount from 0.003 to 0.3 wt % and/ or oxygen in the amount from 0.003 to 0.15 wt %.EFFECT: increase of the absolute and specific values of ultimate strength and yield strength at temperatures of 20 and 750 degrees, the working temperature of the alloy increase up to 800 degrees by providing thermal stability of structure and high stress rupture strength.3 cl, 2 tbl, 7 ex
Titanium-based alloy // 2614229
FIELD: metallurgy.SUBSTANCE: titanium-based alloy contains, wt %: aluminium 1.8-2.5, carbon 0.05-0.10, zirconium 2.0-3.0, iron 0.05-0.25, silicon 0.02-0.05, nitrogen 0.01-0.04, oxygen 0.03-0.10, hydrogen 0.002-0.004, palladium 0.05-0.15, titanium - the rest.EFFECT: alloy is characterized by high resistance to general, gap and pit corrosion in saline media.2 tbl, 1 ex
Titanium-based cast alloy // 2614228
FIELD: metallurgy.SUBSTANCE: casting titanium-based alloy contains, wt %: aluminium 3.5-5.0, carbon 0.02-0.14, oxygen 0.05-0.14, hydrogen 0.002-0.008, iron 0.02-0.20, silicon 0.02-0.10, vanadium 1.5-2.5, boriumn 0.001-0.003, titanium and impurities - the rest, if the following ratio is done Fe+Si≤0.25 wt %.EFFECT: alloy is characterized by high fluidity and by the complex of mechanical properties, providing the quality and reliability of both cast and welded joints.2 tbl
Composite material based on nitinol // 2613835
FIELD: metallurgy.SUBSTANCE: invention relates to composite materials based on nitinol, and is intended for production of micromachine and machinery parts, medical instruments. Composite material based on nitinol comprises wt %: Cu - 5-10, Zr - 5-10, Ti - 36-44, Ni - 36-44, and at least one alloying element extracted from cobalt - not less than 5, yttrium - not less than 2, niobium - not less than 5, and boron - not less than 1, the rest. Material has a biphasic structure consisting of nitinol crystalline matrix phase and amorphous phase disposed along grain boundaries of the matrix phase.EFFECT: material of diameter up to 5 mm with high strength and ductility with superelastic effect is obtained.12 dwg, 4 ex
ethod for consumable electrode producing from alloys based on titanium and aluminium intermetallic compounds // 2613832
FIELD: metallurgy.SUBSTANCE: invention relates to manufacture of consumable electrode for melting ingots of titanium-aluminium alloys containing 15-63 wt % of aluminium. Method comprises preparing a charge by mixing titanium sponge and semi-finished aluminium product, charge portion flow into conical matrix and subsequent through-feed pressing. Titanium sponge is used in the form of spherical bodies with a diameter of 10-25 mm, and aluminium semi-finished product - in the form of bars with the diameter : length ratio = 1:1. Ratio of linear aluminium semi-finished product dimensions to linear titanium sponge dimensions is 2.5-3.5.EFFECT: increased mechanical properties of electrodes.2 cl, 6 tbl
ethod of producing low-modulus alloys based on titan-niobium system by selective laser alloyage // 2612480
FIELD: metallurgy.SUBSTANCE: first, titanium and niobium powders are mechanically activated at a weight ratio of 6:4. Then the mechanically activated mixture of titanium-niobium powder is placed in a vacuum chamber in a laser processing zone with 0.05-0.1 mm layer. Forevacuum of at least 10-2 Pa is created in the vacuum chamber, and argon is injected. Heating is performed by intense laser radiation to a temperature of 2800-3000°C, followed by holding at said temperature for 1-3 msec.EFFECT: obtaining low-modulus titanium-niobium alloy of given composition with certain properties, with a uniform distribution of structural components throughout the alloy volume, which is environmentally friendly due to the absence of foreign materials in synthesis products, reducing the processing time and reducing the cost of the finished product due to the absence of pre-melting of TiNb alloy and subsequent production of powder from this alloy for selective laser alloyage.3 cl, 3 ex
ethod of titanium-based composite workpiece manufacturing // 2612106
FIELD: metallurgy.SUBSTANCE: invention refers to titanium-based composite workpiece manufacturing. Method involves preparation of charge containing titanium alloy waste, and change compaction by pressing to form workpieces. Charge is prepared by adding titanium powder to titanium alloy waste treated in alkaline solution at the 70/30 weight ratio of waste and titanium powder, obtained charge is pickled in acid solution to ensure deoxidation and hydrogenisation up to 0.1-1 wt % of hydrogen in titanium, then the charge is ground along with mixing and heated to pressing temperature, after pressing, impurities are removed from workpiece surface, the workpiece is lubricated, rolled and dehydrogenised thermally.EFFECT: improved mechanical properties, strength and plasticity of workpieces.3 cl, 1 ex
Titanium-based alloy and product made from it // 2610657
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, particularly to titanium alloys that may be used as a high strength structural heat-hardening material for manufacture of parts for aviation and space technology power structures, power systems and missiles operating on a long term basis at the temperatures of up to 350°C. Titanium-based alloy comprises the following, wt %: aluminium 1.0-6.0; molybdenum 5.0-10.0; vanadium 5.0-10.0; iron 0.3-3.5; chrome 0.3-3.5; tin 0.1-2.0; zirconium 0.1-2.0; sulfur 0.0001-0.30; oxygen 0.01-0.20; nitrogen 0.005-0.050; hydrogen 0.003-0.020; carbon 0.005-0.100; silicon 0.01-0.10; titanium is the rest.EFFECT: alloy designed for manufacture of parts has high crack resistance and technological plasticity properties.5 cl, 2 tbl, 4 ex
Sparingly doped titanium alloy // 2610193
FIELD: metallurgy.SUBSTANCE: invention refers to metallurgy. Titanium-based alloy comprises the following, wt %: aluminum 4.5-6.5, vanadium 1.0-3.0, iron 0.5-2.5, gadolinium 0.2-0.6, silicon 0.003-0.15, oxygen 0.003-0.15, titanium is the rest. The alloy has high yield tensile strength properties at the temperature of 20°C as well as a sound structure and a reduced tendency to embrittlement during operation at the temperatures of -70 to +400°C.EFFECT: creation of structural titanium alloys for manufacture of medium loaded parts which are used among other things for an aircraft glider kit operating at the temperatures from -70 to +400°C.3 cl, 2 tbl, 5 ex
ethod for obtaining fine titanium powder // 2609762
FIELD: chemistry.SUBSTANCE: method comprises the activation of the starting material, the hydrogenation, grinding the resulting titanium hydride, titanium hydride thermal decomposition in a vacuum and grinding the resulting cake of titanium. As starting material the ingot is used, which is obtained by the vacuum remelting of titanium raw materials in water-cooled copper ingot mold and crystallizing at a specific heat flux through the surface of the mold (3.3-3.9) ⋅ 106 W / m2. Activation is led in two stages: first treating solution containing water, nitric acid and hydrofluoric acid at a component ratio H2O: HNO3:HF, equal to (0.9 ÷ 1.1):(0.9 ÷ 1.1):(0.17 ÷ 0.23) followed by hydrogenation in the chamber containing hydrogen chloride in volume of 0.01-0.015% of chamber volume. Hydrogenation is conducted at an excess pressure of hydrogen in the hydrogenation chamber 1.1-2.0 atm until the hydrogen content in titanium 350-410 l/kg.EFFECT: increasing of yield of usable powder with granules rounded form 20-50 microns.1 tbl
Titanium-based alloy (versions) and article made therefrom // 2606677
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, specifically to titanium alloys, used to make load-carrying structures, operating for a long time at temperatures of up to 350 °C. Alloy contains, wt%: aluminium – 1.8–3.5, molybdenum – 1.0–3.0, vanadium – 8.0–12.0, chrome – 2.5–4.6, iron – 0.3–1.6, zirconium – 0.4–2.0, tin 0.4–2.0, ruthenium – 0.01–0.16, titanium – balance. Alloy can additionally contain yttrium and/or gadolinium 0.01–0.16.EFFECT: alloy is characterised by high characteristics of ultimate strength at 20 °C in quenched and thermally hardened conditions while maintaining satisfactory ultimate ductility and corrosion resistance against crevice and pitting corrosion.6 cl, 3 tbl, 8 ex

ethod for producing alloy containing titanium, iron, chromium and silicon, from aqueous suspension of particles of ores containing titanium, iron, chromium and silicon compounds, and device therefor // 2606670
FIELD: metallurgy.SUBSTANCE: invention relates to a method of producing an alloy comprising titanium, iron, chromium and silicon from an aqueous suspension of particles of ores containing compounds of said elements, and a device for its implementation. Method includes generating physical fields, their action on raw material mixture, recovery of metals and nonmetals, and forming them into a monolithic structural formation of an alloy composed of said elements.EFFECT: invention allows to obtain said alloy as a circular columnar single crystal directly from raw ore.2 cl, 5 dwg, 2 ex

ethod for producing alloy consisting of titanium, iron, chromium and zirconium, from aqueous suspension of particles of ores containing titanium, iron, chromium and zirconium compounds, and device therefor // 2606669
FIELD: metallurgy.SUBSTANCE: invention relates to a method of preparing an alloy consisting of titanium, iron, chromium and zirconium, from an aqueous suspension of particles of ores containing compounds of said elements, and a device for its implementation. Method comprises placing a starting material in device, generating therein physical fields, recovery of metals with accumulation of end product and discharge thereof from device. Alloy is formed in form of ring columnar crystalline form in form of alloy consisting of above metals. Physical fields acting on used raw materials are rack magnetic fields. Reduction is carried out when supplying to material and its layers jets of compressed air with component-reducing agent, represented by carbon in form of a jet.EFFECT: simple process and high operational reliability.2 cl, 5 dwg, 2 ex
Intermetallic titanium-based alloy and article made therefrom // 2606368
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, in particular, to alloys based on intermetallic compounds of titanium and aluminium with operating temperature not higher than 825 °C, products of which can be used in designing aircraft gas turbine engines and surface power plants. Disclosed are versions of alloys based on gamma titanium aluminide. Alloy based on gamma titanium aluminide contains, wt%: aluminium 30.0–35.0, vanadium 0.7–3.5, niobium 1.2–6.0, zirconium 1.2–3.5 or chrome 2.0–3.5, gadolinium 0.2–0.6, boron 0.003–0.03, titanium – balance. Alloys are characterised by high values of yield point at a temperature of 20 °C, long-term strength (over 100 hours) at a temperature of 800 °C, as well as low tendency to formation of liquation heterogeneity of chemical composition.EFFECT: use in aircraft gas turbine engines and surface power plants.4 cl, 2 tbl, 6 ex

Protective coating for titanium last stage buckets // 2601674
FIELD: engines.SUBSTANCE: invention relates to titanium buckets of large size of last stages steam-turbine engines. Bucket includes a titanium-based alloy having a leading edge, including titanium oxide, having pores and a top sealing layer filling pores, sealing layer selected from a group, consisting of chromium, cobalt, nickel, polyimide, polytetrafluoroethylene and polyester. Disclosed is a method of making such bucket and an article containing titanium-based alloy and having a leading edge.EFFECT: invention provides high durability, and reduced losses from erosion and high economic efficiency.20 cl, 4 dwg, 1 tbl

Titanium-based solder for soldering alloy based on niobium intermetallide // 2600785
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, specifically to high-temperature solder based on titanium, which can be used in making soldered components of hot section of gas turbine engines. Titanium-based solder for soldering niobium intermetallide-based alloy with melting point not lower than 1,350 °C contains wt%: aluminium 18.0-25.0, molybdenum 1.0-10.0, silicon 3.0-6.0, chrome 10.0-15.0, hafnium 1.0-5.0, titanium - balance.EFFECT: solder provides additional weight at temperature 1,350 °C higher than that of niobium intermetallide-based alloy, and value of erosion activity with respect to niobium intermetallide-based alloy not more than 50 mcm at a temperature of 1,500 °C.5 cl, 1 tbl, 4 ex
ethod of thermal hydrogen processing of semi-fabricated products from porous material based on titanium and its alloys // 2594548
FIELD: metal processing.SUBSTANCE: invention relates to thermal hydrogen processing of semi-fabricated products from porous material based on titanium and its alloys for medical implants. Method involves thermal diffusion saturation with hydrogen and vacuum annealing. Thermal diffusion saturation with hydrogen is carried out at temperature of 700-900 °C to hydrogen concentration of 0.2-0.4 wt%, and then at temperature of 500-650 °C to hydrogen concentration of 0.5-0.9 wt%. Vacuum annealing is carried out at 550-700 °C to hydrogen concentration of not more than 0.01 wt%.EFFECT: higher strength of porous material due to increased share of physical fibers contacts between each other.1 cl, 2 ex

ethod of producing of molded articles from titanium nickelide-based alloy // 2593255
FIELD: metallurgy. SUBSTANCE: invention relates to manufacturing of titanium nickelide-based alloys used for medical implants. Method of manufacturing of molded articles involves remelting of metal of the semi-finished product by induction centrifugal melting in karborundovom melter. It is preceded with melting of samples from alloy based on titanium nickelide with varied concentration of allying agent in the range of 0.5-2 %, testing of samples on plastic recovery and superelasticity, determining by interpolation of the optimum concentration of alloying admixture and with that concentration the finished product is melted. Metal semi-finished product is represented by porous workpiece, which is prepared by diffusion by sintering in vacuum of mixed powder of titanium nickelide PN55PT45 with alloying agent at 1,230-1,270 °C during 0.5-5 minutes, then it is subjected to cold pressure treatment to porosity of 25-30 vol%. EFFECT: uniform distribution of alloying additive in alloy is provided. 1 cl, 2 dwg

Heat-resistant titanium-based alloy and article made therefrom // 2592657
FIELD: metallurgy. SUBSTANCE: invention relates to production of heat-resistant titanium-based alloys used for manufacture of wide range of deformed semi-finished products and parts. Heat-resistant titanium-based alloy contains, wt%: aluminium is 10.5-12.5; niobium is 38.5-42.0; molybdenum is 0.5-1.5; vanadium is 0.5-1.5; zirconium is 1.0-2.5; tungsten is 0.3-1.0; tantalum is 0.3-1.0; silicon is 0.1-0.25; gadolinium is 0.02-0.6; titanium and admixtures are rest. EFFECT: alloy is characterised by high values of strength at room and high temperatures of up to 700 °C. 3 cl, 1 tbl, 3 ex

Titanium-based alloy and article made therefrom // 2586947
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, namely to intermetallic titanium-based alloys intended for production of parts of gas turbine engine such as blades, discs, housing and spacers, operating at high temperatures. Ti based alloy contains in % by weight: Al 9.5-12.0, Nb 38.0-42.0, Zr 1.5-2.5, Ta 0.7-1.5, W 0.5-1.0, Mo 0.3-0.6, Si 0.1-0.25, Re 0.1-0.5, C 0.03-0.08, B 0.01-0.1, Ti and admixtures are rest. Alloy is characterised by high resistance to oxidation at temperatures higher than 700 °C.EFFECT: reliable operation of structure made using titanium-based alloy for whole service life.6 cl, 2 tbl, 4 ex

Titanium-based alloy // 2583972
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, specifically to titanium-based alloys, and is intended for use in steam-turbine plants and heavy-duty welded structures operated at high temperature. Titanium-based alloy contains, wt%: aluminium 4.3-6.3; molybdenum 1.5-2.5; carbon 0.05-0.14; zirconium 0.2-1.0; oxygen 0.06-0.14; silicon 0.02-0.12; iron 0.05-0.25; niobium 0.03-1.20; hafnium 0.01-0.5; titanium - balance.EFFECT: alloy has high creep strength at 500°C and preset residual deformation of 2/10 % while maintaining high mechanical properties and corrosion resistance of welded structures.1 cl, 1 tbl

ethod for producing highly thin sheet of titanium alloy ti-6,5al-2,5sn-4zr-1nb-0,7mo-0,15si // 2583567
FIELD: metal processing.SUBSTANCE: invention relates to metal compression forming, namely to manufacture of very thin sheets from high-strength pseudo-alpha titanium alloy Ti-6.5Al-2.5Sn-4Zr-1Nb-0.7Mo-0.15Si. Method for production of very thin sheets from titanium alloy Ti-6.5Al-2.5Sn-4Zr-1Nb-0.7Mo-0.15Si includes preliminary processing of ingot by forging or stamping of ingot in β-area to produce slab, slab hot rolling to semi-finished rolled piece is carried out in 4 stages: first stage, at temperature (RRT+120÷RRT+150) °C with total deformation degree of 50-70 %, second stage, at temperature (RRT-30÷RRT-60) °C with total deformation degree 40-65 %, third stage, at temperature (RRT+80÷RRT+120) °C with total deformation degree 40-60 %, and fourth stage, at temperature (RRT-30÷RRT-70) °C with total deformation degree 40-80 %. Then cutting is performed of semifinished rolled product into sheet workpieces, their assembly into package, packet rolling into sheet blank at temperature (RRT-60÷RRT-100) °C, with total deformation of pack of 60-80 %, and then cold rolling, with intermediate and final annealings, and finishing processing at all stages.EFFECT: higher manufacturability and quality of produced super thin sheets.1 cl, 1 dwg, 1 tbl

Sparingly alloyed titanium alloy // 2583556
FIELD: metallurgy.SUBSTANCE: invention relates to nonferrous metallurgy, particularly to titanium alloys obtained from secondary raw material and having specified characteristics of strength and ductility. Alloy contains 0.1-3.0 Al, Fe 0.3-3.0, 0.1-1.0 Cr, Ni 0.05-1.0, Si 0.02-0.3, N 0.02-0.2, O 0.05-0.5, C 0.02-0.1, Ti - balance. Value of strength of molybdenum [Mo]eqetkand aluminium [Al]eqetkequivalents and reduced amount of equivalents are defined by expressions: [Al]eqetk = Al + 20 O + 33 N + 12 C + 3.3 Si, wt%, [Mo]eqetk = Cr/0.8 + Fe/0.7 + Ni, wt%, Σeqetk = 1.11 [Al]eqetk + 0.92 [Mo]eqetk, where value of given sum Σeqetk of equivalents is 5-22. Value of given sumΣeqetkof equivalents ranges from 5 to 10 for welded structures from 10 to 18 for flat rolled stock, from 18 to 22 for structural purposes.EFFECT: alloy is characterised by high values of strength and ductility.4 cl, 11 tbl, 3 ex

Titanium alloy with good corrosion resistance and high mechanical strength at elevated temperatures // 2583221
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, particularly to titanium-based alloys. High-temperature titanium-based alloy contains, wt%: aluminium from 4.5 to 7.5; tin from 2.0 to 8.0; niobium from 1.5 to 6.5; molybdenum from 0.1 to 2.5; Silicon from 0.1 to 0.6; titanium - balance.EFFECT: alloy is characterised by high corrosion resistance, mechanical strength at high temperatures of up to 750 °C, weldability, as well as high characteristics of ability to deformation in hot/cold state and to superplastic formation.21 cl, 8 dwg, 12 tbl

Titanium-based alloy // 2582171
FIELD: metallurgy.SUBSTANCE: invention relates to titanium alloys, and can be used in making structures operated in aggressive media, such as marine water at high temperatures. Titanium-based alloy contains, wt %: aluminium 3.0-4.2, zirconium 2.0-3.0, silicon 0.02-0.12, iron 0.05-0.25, oxygen 0.03-0.14, nitrogen 0.01-0.04, carbon 0.05-0.10, hydrogen 0.001-0.006, ruthenium 0.05-0.15, niobium 0.7-1.5, vanadium 0.7-1.5, balance is titanium.EFFECT: alloy is characterised by high strength, resistance to slot, pitting and hot salt corrosion in aggressive selenium-containing media with pH>2 and temperature of up to 250°C.1 cl, 2 tbl

High strength alpha/beta titanium alloy fasteners and fastener stock // 2581332
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, particularly to fasteners made from alpha/beta titanium alloy. Fastener made from alpha/beta titanium alloy is subjected to hot rolling, processing to solid solution and ageing, containing, wt%: aluminium from 3.9 to 4.5, vanadium from 2.2 to 3.0, iron from 1.2 to 1.8, oxygen from 0.24 to 0.3, carbon up to 0.08, nitrogen up to 0.05, other elements not more than 0.3 in total, titanium and unintentional impurities - balance. Method for production of fasteners includes provision of alloy, hot rolling; obtained workpiece is annealed at temperature from 1200°F (648.9°C) to 1400°F (760°C) for 1 hour to 2 hours, cooling in air, machining to preset product size, processing to solid solution at a temperature of 1500°F (815.6°C) to 1700°F (926.7°C) for 0.5 hours to 2 hours, cooling with rate at least equivalent to air cooling, ageing at temperature from 800°F (426.7°C) up to 1000°F (537.8°C) for 4 hours to 16 hours and air cooling.EFFECT: production of light-weight and high-strength fasteners.14 cl, 5 dwg, 4 tbl, 8 ex
 
2551390.
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