Alloy based on titanium and products made from it

 

The invention relates to metallurgy and alloys based on titanium, designed for the production of structural parts, components and assemblies in the aerospace industry, shipbuilding, automotive, energy and chemical engineering. Proposed based alloy of titanium including aluminum, molybdenum, vanadium, zirconium, iron, silicon, carbon, oxygen, which further comprises tungsten, copper and boron in the following ratio, wt.%: aluminum - 5,0-6,5, molybdenum, from 0.5 to 0.8, vanadium, 0.5 to 1.2, zirconium, 0.5 to 0.8, the iron of 0.3-0.5, si of 0.05-0.2, carbon - 0,05-0,2, oxygen is 0.1-0.2, tungsten 0.05 to 0.3, the copper of 0.1-0.3, boron 0,005-0,01, titanium - rest, and a product made of this alloy. The technical result of the invention is to improve the ductility, toughness and impact strength while retaining strength. 2 S. p. f-crystals, 2 tab.

The invention relates to the field of metallurgy and alloys based on titanium, designed for the production of structural parts, components and assemblies in the aerospace industry, shipbuilding, automotive, energy and chemical engineering.

Isostandard - 0,03 - 0,08 Titan - the Rest of the known alloy made construction details (including cast) automotive (rods, crank shafts, stiffeners, and other).

The disadvantage of the alloy in as-cast condition are low values of relative elongation and contraction, as well as the endurance limit.

Castings made from the known alloy, have a low life.

The closest analogue, taken as a prototype, is an alloy based on titanium [2], having a chemical composition, wt.%: Aluminum - 3 - 5.5 Molybdenum - 1 - 3 vanadium -2
Zirconia -2
Chrome -2
Manganese -1,5
Iron -0,7
Silicon -0,35
Carbon -0,15
Oxygen0,3
Nitrogen -0,06
Hydrogen -0,015
Titanium - Rest
The disadvantage of the alloy of the prototype are low values of ductility, durability and toughness.

Products of alloy prototype due to the limited range of mechanical properties apply only to industries Narodnik, the snails.

An object of the invention is to increase the ductility, toughness and impact strength while maintaining the level of tensile strength.

To achieve this technical problem is proposed based alloy of titanium including aluminum, molybdenum, vanadium, zirconium, iron, silicon, carbon, oxygen, which further comprises tungsten, copper and boron in the following ratio, wt.%:
Aluminum - 5,0 - 6,5
Molybdenum - 0,5 - 0,8
Vanadium - 0.5 to 1.2
Zirconia - 0,5 - 0,8
Iron - 0,3 - 0,5
Silicon - 0,05 - 0,2
Carbon - 0,05 - 0,2
Oxygen - 0,1 - 0,2
Tungsten - 0,05 - 0,3
Copper - 0,1 - 0,3
Bor - 0,005 - 0,01
Titanium - Rest
and a product made of this alloy.

The authors found that the content of the proposed alloy of tungsten, copper and boron in combination with other components in the claimed limits form microeconomy complex, which contributes to the decrease of grain size (D3and modifies vnutriserdecnuu structure, modifying the parameters of the plates and their orientation, i.e. allows to obtain the optimal dimensions of the elements of the microstructure of the cast alloy, providing higher values of relative in the number of alloys produced by conventional technology: portions hanging initial charge materials, manufacture of pressed consumable electrodes, obtaining ingots using the multiple vacuum arc remelting (var), casting of workpieces in a vacuum arc skull furnace.

The formulations of the alloy ( 1 - 3) and alloy-prototype (44) are given in table.1.

Castings in the form of rods with a diameter of 20 mm was into fragments for the manufacture of machined samples.

Ultimate tensile strength, elongation and narrowing was determined on standard samples with a diameter of 5 mm and the estimated base 5d at room temperature. Determination of the fatigue limit were carried out on standard samples on the basis of N = 107C at room temperature.

Properties of the proposed alloy (1 - 3) and alloy-prototype (4) are given in table.2.

As can be seen from the table. 2, the proposed alloy provides in comparison with the known alloy increased relative elongation 7 times, relative narrowing of the 4 times, the endurance limit 3 times and toughness 9 times while maintaining the level of tensile strength.

We offer alloy can be used in structural components, nodes and elements for aerospace industry, ship building, car is, nozzles, impellers, snails).

The use of the proposed alloy based on titanium will increase the reliability and service life of products by 15-20%.

Literature:
1. p. 4943412, USA
2. Shapovalov, O. M., Molchanov E. K., Mineeva L. K. study of the properties of titanium alloy TV2. - Proceedings of the all-Union scientific research Institute of titanium, 6, 1970, S. 117-120, R j "metallurgy" - I, 1971.


Claims

1. The base alloy of titanium including aluminum, molybdenum, vanadium, zirconium, iron, silicon, carbon, oxygen, characterized in that it further contains tungsten, copper and boron in the following ratio, wt. %:
Aluminum - 5,0-6,5
Molybdenum - 0,5-0,8
Vanadium - 0.5 to 1.2
Zirconia - 0,5-0,8
Iron - 0,3-0,5
Silicon - 0,05-0,2
Carbon - 0,05-0,2
Oxygen - 0,1-0,2
Tungsten - 0,05-0,3
Copper - 0,1-0,3
Bor - 0,005-0,01
Titanium - Rest
2. The product from an alloy based on titanium, characterized in that it is made from an alloy of the following composition, wt. %:
Aluminum - 5,0-6,5
Molybdenum - 0,5-0,8
Vanadium - 0.5 to 1.2
Zirconia - 0,5-0,8
Iron - 0,3-0,5
Silicon - 0,05-0,2
Carbon - 0,05-0,2
Oxygen - 0,1-0,2
Tungsten - 0,05-0,3
Copper - 0,1-0,3
Bor - 0,005-0,01
Titanium - Rest

 

Same patents:

-titanium alloy" target="_blank">

The invention relates to the field of non-ferrous metallurgy, in particular to the creation of new alloys based on titanium

The invention relates to the metallurgy of alloys based on titanium, intended for use as a heat-resistant material

The invention relates to the field of metallurgy and alloys based on titanium, operating at elevated temperatures

The invention relates to compositions of alloys based on titanium, with good workability in the manufacture of seamless cold-deformed pipes for pipelines hydraulic systems, aerospace, and marine vessels

The invention relates to the field of metallurgy, in particular to alloys based aluminide titanium, made using the technology of casting or powder metallurgy

The invention relates to ferrous metallurgy, namely the creation of titanium alloys for use as high-strength materials of construction of the airframe

The invention relates to the field of metallurgy and alloys based on titanium, operating at elevated temperatures

The invention relates to the creation of titanium alloys intended for use as a structural material, operating at elevated temperatures

The invention relates to metallurgy, in particular to alloys based on titanium, intended for use as structural, high-strength and heat-resistant material for creation of power structures and aerospace engineering

The invention relates to the field of non-ferrous metallurgy, namely the creation of a modern titanium alloys used for the manufacture of predominantly large forgings, die forgings, fasteners and other parts of aircraft equipment

FIELD: mechanical engineering; piston internal combustion engines.

SUBSTANCE: invention relates to valve of internal combustion engine, method of its manufacture and heat-resistant titanium alloy used for manufacture of valve consisting of following components, mass %: aluminum 7.5-12.5; molybdenum 1.6-2.6; zirconium 1.4-2.4; silicon 0.1-0.2' yttrium 0.005-0.1; titanium - the rest. It has α+α2+β phase composition with intermetallide α2 phase on Ti3Al base dispersed in α phase. Proposed method includes forming of valve from cylindrical blank by deformation machining with preliminary heating and subsequent heat treatment. Preliminary heating of part of blank related to rod done to temperature 5-20oC lower than temperature of complete polymorphic transformation of alloy, and its deformation machining is carrying out by wedge cross rolling. Deformation machining of part of blank related to head is done by forging with preliminary heating to temperature 5-50oC higher than temperature of complete polymorphic transformation of alloy corresponding to beginning of forging, and forging is finished at temperature lower than complete polymorphic transformation of alloy to form plate head of valve and transition section provided smooth changing of head into rod. Invention provides designing of valve, method of its manufacture and heat-resistant alloy used in manufacture of valve making it possible to operate valve within operating temperature range owing to increased long-term strength and creep resistant of valve head material and increased strength, modulus of elasticity and hardness of valve rod material.

EFFECT: improved quality of valve and increased reliability in operation.

16 cl, 3 tbl, 1 ex, 15 dwg

FIELD: metallurgy, in particular alloy with shape memory effect useful as implants in medicine, as temperature sensors, thermosensitive elements in equipment engineering, radio engineering, etc.

SUBSTANCE: claimed alloys contain a) (at. %) titanium 48-52; cobalt 20-30; and balance: gold; and b) titanium 48-52; iron 13,1-16; and balance: gold. Materials of present invention are free from nickel and have shape memory effect and superelasticity at human body temperatures that provides high biomechanical compatibility of implant made from the same in contacting region with various tissues of living organism.

EFFECT: alloys with excellent shape memory effect and superelasticity.

2 cl, 1 tbl, 1 ex

FIELD: powder metallurgy, namely sintered titanium base alloys used as constructional materials.

SUBSTANCE: sintered titanium base alloy contains, mass. %: aluminum, 5.5 - 7.0; zirconium, 1.4 -2.5; molybdenum,, 0.5 - 1.8; vanadium,, 0.8 -2.3; titanium, the balance. Alloy is prepared of powder of said content with particle size in range 0.5 - 3.0 micrometers. Structure of particles includes martensite α - phase and ω-phase with coherent dissipation range 300 - 600 Å. Percentage density of alloy - 99.6%. In structure of alloy there is no α2 - phase. Alloy is prepared by compacting under pressure 1200 Mpa, sintering at 1523 K for 3 hours in vacuum 0.0133 Mpa, annealing at 723 - 823 K for 1.5 hours and cooling together with furnace until room temperature.

EFFECT: enhanced mechanical properties of alloy.

FIELD: metallurgy, namely processes for forging titanium alloys and blank of such alloy suitable for forging.

SUBSTANCE: method comprises steps of preparing blank and forging it. Forging is realized at providing mechanical hardening factor equal to 1.2 or less and at difference of hardness values between central (along width) zone and near-surface zone equal to 60 or less by Vickers. Factor of mechanical hardening is determined as HV(def)/HV(ini), where HV(ini) - hardness of titanium alloy blank before forging; HV(def) -hardness of titanium alloy blank after forging at forging reduction 20%. Forging may be realized at deformation rate from 2 x 10 -4 s -1 to 1s-1 while keeping relations (T β - 400)°C ≤ Tm ≤ 900°C and 400°C ≤ Td ≤ 700°C, where Tβ (°C) -temperature of β-phase transition of titanium alloy, T m(°C) - temperature of worked blank; Td(°C) - temperature of die set. Blank has factor of mechanical hardening 1.2 or less and difference of hardness values between central (along width) zone and near-surface zone equal to 60 or less by Vickers.

EFFECT: possibility for forging titanium alloy blanks at minimum difference of material properties along depth, simplified finishing of blank surface after forging, reduced cracking of blank material, good workability of blank with favorable ductility and fatigue properties.

8 cl, 5 tbl, 6 dwg, 4 ex

FIELD: metallurgy.

SUBSTANCE: invention proposes titanium-base alloy and article made of thereof. Alloy comprising aluminum, molybdenum, vanadium, chrome, iron, zirconium, oxygen, carbon, hydrogen, nitrogen, copper and nickel comprises additionally silicon and tungsten in the following ratio of components, wt.-%: aluminum, 2.0-6.8; molybdenum, 1.0-3.5; vanadium, 3.0-6.0; chrome, 0.4-1.6; iron, 0.2-1.2; zirconium, 0.01-0.3; oxygen, 0.04-0.14; carbon, 0.02-0.1; hydrogen, 0.003-0.02; nitrogen, 0.005-0.05; copper, 0.001-0.1; nickel, 0.001-0.01; silicon, 0.02-0.15; tungsten, 0.001-0.03, and titanium, the balance. Invention provides the development of titanium alloys designated for making plane stringers, ribs, frames, fuselage, wings and engines and for applying as material for welding. Invention provides enhancing strength and crack-resistance of the basic alloy and welding joints and reducing article mass.

EFFECT: improved properties and quality of alloy.

3 cl, 2 tbl, 3 ex

FIELD: non-ferrous metallurgy; methods of titanium alloy bricks production.

SUBSTANCE: the invention is pertaining to the field of non-ferrous metallurgy, in particular, to the brick made out of α+β titanium alloy and to a method of its manufacture. The offered brick consists of the following components (in mass %): aluminum - 4-5, vanadium - 2.5-3.5, iron - 1.5-2.5, molybdenum - 1.5-2.5, titanium - the rest. At that the alloy out of which the brick is manufactured, contains - 10-90 volumetric % of the primary α-phase. The average grain size of the primary α-phase makes 10 microns or less in a cross-section plain parallel to the brick rolling direction. Elongation of grain of the primary α -phase is the four-fold or less. The offered method of manufacture of the given brick includes a stage of a hot rolling. At that before the stage of the hot rolling conduct a stage of the alloy heating at the surfaces temperature (Tβ-150)- Tβ°C. During realization of the stage of the hot rolling the surface temperature is kept within the range of (Tβ-300)-( Tβ -50)°C, and the final surface temperature, that is a surface temperature directly after the last rolling, makes (Tβ-300)-( Tβ-100)°C, where Tβ is a temperature of α/β-transition. The technical result of the invention is formation of a brick out of the high-strength titanium alloy having a super pliability, excellent fatigue characteristics and moldability.

EFFECT: the invention ensures production of a brick out of the high-strength titanium alloy having a super pliability, excellent fatigue characteristics and moldability.

7 cl, 7 dwg, 21 tbl, 2 ex

FIELD: nonferrous metallurgy; aircraft industry; mechanical engineering; development of alloys on the basis of titanium.

SUBSTANCE: the invention is pertaining to the field of nonferrous metallurgy, in particular, to development of alloys on the base of titanium, working at the heightened temperatures. It may be used in an aircraft industry for manufacture of components, for example, disks, vanes, rings, and also in mechanical engineering. The invention presents an alloy based on titanium and a hardware product produced out of it. The alloy contains aluminum, zirconium, stannum, niobium, a molybdenum, silicon, carbon and oxygen. At that it in addition contains tungsten and iron, at the following ratio of components (in mass %): aluminum 5.8 - 6.6, zirconium 2.0 - 4.0, stannum - 2.5 - 4.5, niobium - 0.8-2.5, molybdenum - 0.8- 1.5, silicon - 0.25-0.45, carbon - 0.05-0.1, oxygen -0.05-0.12, tungsten - 0.35-0.8, iron - 0.06-0.13, titanium - the rest. The technical result is a development of an alloy having the lower weight at the given short-time strength and a specific low-cycle fatigue, that increases an operational life and reliability of the components of the hot tract of aero-engines.

EFFECT: the invention ensures development of an alloy with the lower weight at the given short-time strength and a specific low-cycle fatigue with increased operational life and reliability.

2 cl, 2 tbl, 3 ex

FIELD: medicine; instrument-making industry; radio industry; production of materials with a memory effect of the form.

SUBSTANCE: the invention is pertaining to the materials with a memory effect of the form and with the modified surface, which may be used as implants in medicine and as the temperature sensors, thermo-sensitive and executive elements and designs in instrument-making industry, the radio industry. The offered material consists of a base made out of a titanium nickelide of the following composition (in at. %): titanium - 49-51, nickel - the rest, and the surface layer modified by alloying elements. The modified surface layer is formed by irradiation with a low-energy high-current electronic beam and has a depth of 1000-2500 nanometers and the dimensions of the crystal grains of no more than 30 nanometers. In the capacity of the alloying elements it contains oxygen and carbon at the following ratio of components (in at. %): oxygen - 10-20, carbon - 10-15, titanium - 40-50, nickel - the rest. The technical result of the invention is production of the materials with an effect of memory of the form and a high degree capability of the form restoration both at a low and high deforming loadings.

EFFECT: the invention ensures production of the materials with an effect of memory of the form and a high degree capability of the form restoration both at a low and high deforming loadings.

1 tbl, 1 ex

FIELD: metallurgy, in particular, titanium-based materials resistant to change of color.

SUBSTANCE: construction material of pure titanium contains, wt%: Fe 0.08 or less; Nb 0.02 or less; Co 0.02 or less, and is provided with surface oxide film having thickness of 170Å or less. Method involves producing material from pure titanium; etching and heating to temperature X( C) within the range of from 130 C to 280 C for time T (min) satisfying condition of T≥239408xX-2,3237.

EFFECT: increased resistance to change of color for prolonged time as compared to traditional materials.

3 cl, 2 dwg, 4 tbl, 3 ex

Titanium-base alloy // 2269584

FIELD: metallurgy.

SUBSTANCE: invention relates to titanium-base alloys used in making high-strength and high-efficient articles. Titanium-base alloy consists of aluminum, vanadium, molybdenum, iron and oxygen. Components of alloy are taken in the following ratio, wt.-%: aluminum, 3.5-4.4; vanadium, 2.0-4.0; molybdenum, 0.1-0.8; iron, max 0.4; oxygen, max 0.25, and titanium, the balance. Invention provides the development of universal alloy for large-sized forged pieces and stamps, thin-sheet roll and foil possessing the necessary strength and plastic indices and structure.

EFFECT: improved and valuable properties of alloy.

2 tbl

Up!