With zinc as the next major constituent (C22C21/10)

C   Chemistry; metallurgy(318327)
C22C21        Alloys based on aluminium(1006)
C22C21/10                     With zinc as the next major constituent(158)
ethod for producing castings of high-strength aluminium-based alloys // 2621499
FIELD: metallurgy.SUBSTANCE: method for producing castings of high-strength aluminium-based alloy includes the preparation of an aluminium melt containing zinc, magnesium, copper, nickel and iron, production of a casting by casting the prepared melt and heat treatment of the casting to form a structure consisting of a dispersively strengthened aluminium matrix and Al9FeNi phase particles. Preparation of the aluminium melt is carried out using aluminium obtained by electrolysis technology with an inert anode. The melt is prepared at the following concentration of alloying elements, by weight %: zinc 6.3-7.5, magnesium 2.1-2.8, copper 0.2-0.35, nickel 0.6-0.8, iron 0.50-0.70, aluminium is the rest, and after the heat treatment, a structure with a dendritic cell size of the aluminium matrix of not more than 30 mcm and a microhardness of at least 170 HV is obtained.EFFECT: producing castings with a temporary resistance of at least 500 MPa, a yield strength of at least 450 MPa, a relative elongation of at least 5 percent.3 cl, 3 ex, 4 tbl, 3 dwg
Weldable alloy based on aluminium for meteoroid protection // 2614321
FIELD: metallurgy.SUBSTANCE: alloy contains wt %: zinc 2-8.5, magnesium 1.5-3.5, manganese 0.1-0.5, chromium 0.05-0.3, zirconium 0.05-0.3, hafnium 0.05-1.5, beryllium 0.0001-0.01, at least one element from the group: copper, titanium, nickel, cobalt up to 0.30 each, aluminium and inevitable impurities in an amount not exceeding 0.7 are the rest.EFFECT: due to uniform grain structure provides high resistance to impact with increase in strength, satisfactory ductility and weldability.3 cl, 5 ex, 2 tbl, 6 dwg
High-strength aluminium-based wrought alloy of al-zn-mg-cu-system and article made thereof // 2613270
FIELD: metallurgy.SUBSTANCE: high-strength Al-based wrought alloys of the Al-Zn-Mg-Cu system and article thereof contain, wt %: 7.8-8.2 Zinc, 2.0-2.4 magnesium, 1.8-2.1 copper, 0.1-0.17 scandium, 0.1-0.14 zirconium, 0.0005-0.001 cerium, 0.01-0.03 titanium, 0.0005-0.001 boron, aluminum and inevitable impurities, including not more than 0.12 iron, no more than 0.11 silicon, no more than 0.02 manganese, not more than 0.02 chromium, - the rest, while hydrogen is present in the alloy in an amount of 0.05-0.3 cm3/ 100 g of metal, and the ratio of magnesium and zinc is from 0.25 to 0.3.EFFECT: increased strength characteristics, including specific strength of the material.2 cl, 1 ex, 2 tbl
High-strength aluminium-based alloy // 2610578
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, in particular, to production of high-strength aluminium-based materials, and can be used for production of critical articles, operating under high loads, in particular for fabrication of parts, used for motor industry, aircraft, sports inventory, housings of electronic devices, etc. High-strength aluminium-based alloy contains, wt%: zinc 5.2–6.0, magnesium 1.5–2.0, nickel 0.5–2.0, iron 0.4–1.0, copper 0.01–0.25, zirconium 0.05–0.20, at least one element from a group including scandium 0.05–0.10 and titanium 0.02–0.05, aluminium – balance, when meeting ratio 1≤Ni/Fe≤2 and total content of zirconium and at least one element from a group comprising titanium and scandium, of not more than 0.25 wt%.EFFECT: technical result is improved strength properties of alloy and articles made therefrom, due to formation of secondary releases of hardening phase by disperse hardening.8 cl, 3 ex, 4 tbl, 2 dwg
High-strength aluminium alloy and article made of it // 2610190
FIELD: metallurgy.SUBSTANCE: aluminum-based alloy contains, wt %: copper 0.5-3.5; magnesium 1.5-4.5; zinc 7.0-10.0; manganese 0,005-0.9; zirconium 0.005-0.5; cobalt 0.005-0.5; cerium 0.005-0.5; berillium 0.0001-0.01; at least one element of a group including iron, nickel by 0.005-0.35 of each, and at least one element of a group including scandium, titanium by 0.001-0.35 of each; boron, carbon by 0.0001-0.02 each, the rest is aluminium.EFFECT: increased limit strength and yield point at the room temperature, strength at 80 °C and low-cycle fatigue after reinforcement heat treatment.2 cl, 1 ex, 2 tbl

Solder for soldering aluminium and alloys thereof // 2596535
FIELD: metal processing.SUBSTANCE: invention can be used in producing soldered structures from aluminium and its alloys. Solder contains components in following ratio, wt%: silicon 5-13, copper 1-13.5, zinc 2-10, nickel 0.5-4.5, tin 0.1-0.3, at least one element from a group comprising strontium 0.001-0.2, sodium 0.001-0.2, titanium 0.001-0.1, vanadium 0.001-0.2, at least one element selected from a group of cobalt 0.001-0.8, molybdenum 0.001-0.8; beryllium 0.001-0.1, aluminium - balance. Total content of zinc and copper is not more than 15 wt%, ratio of nickel content to copper ranges from 1:2 to 1:4. During vacuum soldering solder additionally contains magnesium in amount of 0.1-1 wt%.EFFECT: solder provides high level of strength of soldered joint with possibility of conducting process of soldering at temperatures below 590 °C, which enables to use in soldered structures of most modern structural aluminium alloys.1 cl, 2 tbl, 3 ex

Solder for soldering aluminium and alloys thereof // 2585598
FIELD: technological processes.SUBSTANCE: invention can be used in producing soldered structures from aluminium and its alloys. Solder contains following component ratio, wt %: silicon 5-13, copper 4-7, zinc 4-7, nickel 0.5-3, manganese 0.3-3, iron 0.3-3, at least one element from group comprising strontium 0.001-0.2; beryllium 0.001-0.1, titanium 0.001-0.1, sodium 0.001-0.2 and vanadium 0.001-0.2, rest is aluminium. Iron to manganese ratio varies from 1:1 to 1:1.1. Ratio of nickel to iron is not more than 1:2. During vacuum soldering solder additionally contains magnesium in amount of 0.1-1 wt. %. In soldering with long thermal cycle solder additionally contains, wt%: cobalt 0.001-0.8 and molybdenum 0.001-0.8.EFFECT: low melting point of solder, higher strength and corrosion resistance of produced soldered structures from aluminium alloys, which increases their service life.3 cl, 2 tbl, 3 ex

Improved aluminium alloys 7xxx and methods for production thereof // 2581544
FIELD: metallurgy.SUBSTANCE: invention relates to production of articles from aluminium alloys 7xxx. Method of producing products from deformed aluminium alloy 7xxx containing 2.0-22 wt% zinc and at least of 1.0 wt% of copper, involves preparation of articles from aluminium alloy for after annealing cold pressure treatment , cold pressure treatment of item at more than 50 % and thermal treatment to impart shape during thermal treatment, at that mentioned treatment contains quenching, cold forming and thermal treatment is carried out to obtain recrystallised microstructure having less than 50 % of volume fraction of grains having spread of orientation of grains of not more than 3°.EFFECT: invention is aimed at improvement of strength properties of alloys 7xxx.11 cl, 3 ex, 17 tbl, 31 dwg

Procedure for thermal treatment of items out of high strength aluminium alloys // 2576283
FIELD: metallurgy.SUBSTANCE: procedure for the thermal treatment of items out of high strength aluminium alloys of a system Al - Zn - Mg - Cu, containing in wt %: zinc 6.0-9.0, magnesium 1.6-2.6, copper 0.8-1.6, zirconium 0.07-0.15, iron 0.02-0.15, silicon below 0.1, aluminium and inevitable admixtures - the rest, includes hardening and artificial ageing, contains the stages of isothermal and non-isothermal ageing. First of all, the first stage of isothermal ageing is performed at a temperature of 60-90°C for 10-24 h, then the first stage of non-isothermal ageing is performed by means of the item heating to 160-195°C with the rate of 10-15°C/h, then the second stage of isothermal ageing at a temperature of 160-195°C is performed during the time period determined from the relationship t=ln(473/T)/0.009, where t is the holding time, h, T is the holding temperature, K, and the second stage of non-isothermal ageing is performed by cooling from 160-195°C to 80°C with the rate determined by the equation V=ln(T/88.5)/0.0057, where V is the cooling rate, K/h, T is the holding temperature, K.EFFECT: reduced sensitivity to laminating, intergranular and pitting corrosion, increased homogeneity of the structure and properties in the item volume, producing the items with improved strength and corrosion characteristics, including for marine conditions operation.3 cl, 2 tbl, 1 ex

ethod of producing of three-component alloy aluminium-zinc-silicon from water suspension of ore particles, containing compounds of aluminium, zinc and silicon, and device for its implementation // 2574155
FIELD: metallurgy.SUBSTANCE: method includes the location of a pre-formed initial feed mixture containing compounds of all the above listed elements in the internal volume of a device used for its processing. In the device physical fields are generated, they are superimposed on all zones of its cavity, where the initial feed mass being processed to alloy is located. Using these physical fields the alloy components (Al; Zn; Si), i.e. the components of the initial ore material are restored. During the execution of the above said operation the individual restored elements of the ready final product are combined in a solid monolith structure comprising the alloy. During the method implementation the feed material is mixed.EFFECT: possibility of production of the said alloy directly from ore.2 cl, 5 dwg, 3 ex

ethod of producing of large-size ingots with rectangular cross section from high-strength aluminium alloys of al-zn-mg-cu-zr system // 2561581
FIELD: metallurgy.SUBSTANCE: aluminium-zirconium, technical aluminium and waste are loaded into the central part of furnace space with the temperature 740-750°C. The molten metal is added by the ligature aluminium-beryllium at the temperature 730-740°C, magnesium and zinc with the temperature 710-730°C and after conditioning of the molten metal during 10-20 minutes at the temperature 710-730°C copper is added, the ligatures aluminium-iron, aluminium-chrome-magnesium. The molten metal is heated up to 720-740°C and mixed. 15-25 minutes before pouring the molten metal is modified by the ligature aluminium titan in volume 50% from the rated amount. The molten metal poured into a ladle is processed by gumboil at the temperature 710-730°C. The molten metal from the ladle is poured into the mixer with the ligatures which have been earlier loaded and heated up to about 750-770°C during 20-40 minutes by the ligatures aluminium titan amounting 50% from the rated amount and aluminium-titan-boron. The vacuum processing is performed within 30-60 minutes at the temperature 710-730°C and the residual pressure 1.3-2.0 kPa. Moulding is performed using the filtering element. The ingot is cooled with the water pumped under the pressure 100-150 kPa to wide sides of the ingot and at the pressure 10-30 kPa - to narrow sides of the ingot.EFFECT: produced ingots with uniform small structure, low gas content, uniform distribution of intermetallic phases.4 tbl

High-strength heat-treatable aluminium alloy and article made thereof // 2556849
FIELD: metallurgy.SUBSTANCE: invention relates to high-alloyed superhard alloys based on aluminium of Al-Zn-Mg-Cu system to be used as a structural material in aircraft engineering and rocketry, surface vehicles and instrument making. This alloy and article made thereof contain the following components, wt %: zinc - 8.5-9.3, magnesium - 1.6-2.1, copper - 1.3-1.8, zirconium - 0.06-0.14, manganese - 0.01-0.1, iron - 0.02-0.10, silicon - 0.01-0.05, chromium - 0.01-0.05, beryllium - 0.0001-0.005, hydrogen - 0.8·10-5-2.7·10-5 and at least one of elements of the group including titanium - 0.02-0.06, boron - 0.001-0.01, aluminium making the rest. Total content of zinc, magnesium and copper may not exceed 12.5-13.0%. Total content of transition metals, i.e. zirconium, manganese and chromium may not exceed 0.25-0.30%. Iron-to-silicon should make at least 1.5.EFFECT: higher strength and crack resistance.5 cl, 2 tbl, 1 ex

High-strength heat-treatable aluminium alloy and article made thereof // 2553781
FIELD: metallurgy.SUBSTANCE: alloy contains in wt %: zinc 8-10, magnesium 2.0-3.0, copper 1.6-2.6, scandium 0.12-0.25, zirconium 0.06-0.20, beryllium 0.0001-0.005, cobalt 0.05-0.15, nickel 0.5-1.0, iron 0.45-0.95, aluminium - rest, at that ratio between zinc and magnesium is within range 3.1-4.1.EFFECT: increased alloy strength at room temperature, and creep resistance at moderately increased temperatures.3 tbl, 1 ex
Aluminium-based protective alloy // 2542213
FIELD: metallurgy.SUBSTANCE: alloy contains the following, wt %: zinc - 4.0-6.0, manganese - 0.1-0.3, magnesium - 0.5-2.5, titanium - 0.01-0.1, calcium - 0.005-0.01, aluminium is the rest at the following limitation of content of impurities: iron is not more than 0.1, copper is not more than 0.01, silicone is not more than 0.1, hydrogen is not more than 0.35 cm3/100g of metal.EFFECT: providing high electrochemical characteristics and excluding a risk of passivation of surface of cast protectors made from the proposed alloy; increasing tensile strength limit of an alloy.1 tbl
Welded aluminium alloy for armoured skin // 2536120
FIELD: metallurgy.SUBSTANCE: welded aluminium alloy contains, by wt %: zinc 3.8-5.3; magnesium 1.2-2.0; manganese 0.91-1.3; chrome 0.12-0.40; zirconium 0.07-0.15; copper 0.10-0.30; iron ≤ 0.35; silicium ≤ 0.35; vanadium 0.01-0.12; boron 0.01-0.12; nickel ≤ 0.05; calcium ≤ 0.05; aluminium - the rest, at the total contents of zinc and magnesium 5.0-7.3 by wt % and the ratio between the contents of zinc and magnesium - 1.90-4.58.EFFECT: creation of welded aluminium alloy for the armoured skin, which provides at a high corrosion stability of the armoured skin, increase of safe level increase of resistance to formation of back chips.1 ex

Products from aluminium alloy and method of artificial age-hardening // 2531214
FIELD: metallurgy.SUBSTANCE: invention relates to constructional elements from aluminium alloy, in particular, for space industry. The slab is made with the thickness at least 4 inches from aluminium alloy, which contains (wt %): Zn - from 6.4 up to 8.5, Mg - from 1.4 up to 1.9, Cu - from 1.4 up to 1.85, Zr - from 0.05 up to 0.15, Ti - from 0.01 up to 0.06, Fe - up to 0.15, Si - up to 0.12, the rest is aluminium, accompanying elements and impurities.EFFECT: improved combination of durability and resistance to fracturing is provided, and also the resistance to a fracturing as a result of stress corrosion is provided, especially in conditions of marine atmosphere.10 cl, 14 dwg, 14 tbl, 3 ex
ethod to produce axisymmetric forgings of cover type with diameter up to 200 mm from high-strength aluminium alloys al - zn - mg - cu, alloyed by scandium and zirconium // 2516680
FIELD: metallurgy.SUBSTANCE: method to produce axisymmetric forgings of a cover type with a diameter of up to 200 mm from high-strength aluminium alloys Al-Zn-Mg-Cu, alloyed with scandium and zirconium, includes preparation of aluminium melt, containing scandium and zirconium, its reheating to 765-780°C, casting of round bars of small diameter at 710-740°C, their homogenisation at 400-440°C for 4-10 hours, stamping at 380-440°C, tempering from temperature 465-480°C with even cooling of the entire surface of forgings with speed providing for preservation of fully non-crystallised structure of the forging after tempering, and artificial ageing.EFFECT: forgings have lower level of residual tempering stresses, which provides for stability of geometric parameters of parts due to elimination of ovalisation when turning forgings into thin-walled parts.2 tbl, 1 ex
High-strength al-zn-mg-cu-system aluminium-based wrought alloy of decreased density and article made thereof // 2514748
FIELD: metallurgy.SUBSTANCE: proposed composition contains the following substances, in wt %: zinc - 6.0-8.0; magnesium - 3.4-4.2; copper - 0.8-1.3; scandium - 0.07-0.15; zirconium - 0.08-0.12; beryllium - 0.0005-0.004; cerium - 0.01-0.15; titanium - 0.02-0.08; silicon - 0.01-0.15; iron - 0.01-0.15; hydrogen - 0.05-0.35 cm3/100 g of metal; unavoidable impurities from the group including Mn, Cr, V, Mo, Li, Ag, K, Na, O in total amount of not over 0.10, aluminium making the rest at the ratio of magnesium-to-zinc content making 0.53-0.57.EFFECT: higher strength of Al-Zn-Mg-Cu-system alloys and articles.2 cl, 1 ex, 2 tbl

Active material of negative electrode based on silicone alloy for electric device // 2508579
FIELD: electricity.SUBSTANCE: invention refers to active material of negative electrode for electric device containing an alloy with composition formula SixZnyAlz, where each of x, y and z is mass percentage meeting the following: (1) x+y+z=100, (2) 26≤x≤47, (3) 18≤y≤44 and (4) 22≤z≤46. Also invention refers to electrical device and negative electrode for it.EFFECT: providing active material of negative electrode for electrical device such as lithium-ion accumulator battery providing well-balanced properties of high cycling conservation and high initial capacity.4 cl, 2 tbl, 10 dwg, 2 ex
Article from al-zn-mg with higher sensitivity to quenching // 2503735
FIELD: metallurgy.SUBSTANCE: 50-305 mm-thick article is made from alloy of the following chemical composition, in wt %: Zn - 3-11, Mg - 1-3, Cu - 0.9-3, Ge - 0.03-0.4, Si - not over 0.5, Fe - not over 0.5, Ti - not over 0.3, aluminium and common or unavoidable elements and impurities making the rest. Proposed method comprises slab casting, heating and/or annealing treatment of cast slab, slab hot treatment, optional cold treatment, heat processing to solid solution of slab (PSS), cooling of PSS slab, optional expansion or compression of cooled PSS slab or any other cold treatment of PSS slab to remove strain, ageing of cooled PSS slab to reach required state.EFFECT: high hardness, ductility and lower sensitive to quenching.20 cl, 2 tbl, 1 ex
High-strength heat-treatable aluminium alloy and article made thereof // 2503734
FIELD: metallurgy.SUBSTANCE: aluminium-based alloy is used for production of strained semis as forgings and tubes for gas centrifuges, low-pressure compressors, vacuum molecular pumps and heavy-duty units operated at mildly increased temperatures. Proposed composition contains the following substances, in wt %: zinc - 6.6-7.4, magnesium - 3.2-4.0, copper - 0.8-1.4, scandium - 0.12-0.30, zirconium - 0.06-0.20, beryllium - 0.0001-0.005, cobalt - 0.05-0.15, nickel - 0.35-0.65, iron - 0.25-0.65, aluminium making - the rest.EFFECT: higher strength at sufficient ductility and reduce density of alloy.1 ex, 3 tbl

ethod of extruding semis of high-strength aluminium alloy and parts thus made // 2492274
FIELD: metallurgy.SUBSTANCE: proposed method comprises casting the ingots of alloy containing the following components in wt %: zinc - 6.-4.1, magnesium - 0.6-1.1, manganese - 0.2-0.5, zirconium - 0.05-0.12, chromium - 0.05-0.15, copper - 0.1 -0.2, titanium - 0.01 -0.06, molybdenum - 0.01 -0.06, aluminium making the rest, at the temperature of 690-710°C and casting rate of 25-50 mm/min. Ingots are homogenised at 450-470°C for 8-12 hours and subjected to hot forming at 10-530°C and outflow rate of 0.1-4.0 m/min. Besides it includes air or air-water mix quenching and two-step ageing: at 90-110°C for 6-12 hours and at 160-190°C for 4-10 hours.EFFECT: production of log parts with high operating properties.4 cl, 1 ex, 6 tbl, 4 dwg
Superplastic aluminium-based alloy // 2491365
FIELD: metallurgy.SUBSTANCE: alloy contains, wt %: 3.5-4.5 zinc, 3.5-4.5 magnesium, 0.6-1.0 copper, 2.0-3.0 nickel, 0.25-0.3 zirconium, aluminium - balance, at the same time after strengthening thermal treatment the alloy has yield point of 570 MPa, strength limit of 600 MPa, hardness of 160 HY, and after deformation at 440-480°C with speed of 0.001-0.01 1/s the alloy has elongation of more than 500%.EFFECT: production of alloy with equiaxial homogeneous fine-grain structure.4 ex

Casting aluminium alloy // 2485199
FIELD: metallurgy.SUBSTANCE: alloy contains the following, wt %: silicon 6.6-7.4, magnesium 0.31-0.45, copper 0.18-0.32, manganese 0.15-0.45, iron 0.15-0.4, aluminium is the rest, at that, the alloy has liquidus temperature within 608 to 620°C; temperature of balanced solidus of not less than 552°C and structure after heat treatment as per mode T66, which contains the amount of inclusions of silicon phase within 6.4 to 7.5 vol. %; iron in the alloy structure is completely bound to skeletal inclusions of phase Al15(Fe,Mn)3Si2, and magnesium is completely bound to secondary extractions of phase Al15Cu2Mg8Si6.EFFECT: creation of alloy for obtaining high-duty shaped castings and having high technological and operating characteristics.2 cl, 2 tbl, 2 ex, 2 dwg
Aluminium alloy and method of its production // 2484169
FIELD: metallurgy.SUBSTANCE: proposed composition contains the following substances, in wt %: zinc - 5.0-5.8, magnesium - 1.1-1.2, chromium - 0.2-0.3, copper - 0.1-0.4, titanium - 0.05-0.15, cerium - 0.005-0.05, samarium - 0.005-0.05, silicon - not over 0.3, iron - not over 0.3, zirconium - not over 0.005, aluminium making the rest. Method of making semis from said aluminium alloy comprises first thermal treatment at up to 480°C, cooling to room temperature, and second thermal treatment at up to 200°C.EFFECT: higher strength, lower residual strain.11 cl, 4 ex

High-strength sparingly-alloyed aluminium-based alloy // 2484168
FIELD: metallurgy.SUBSTANCE: invention may be used for making critical parts operated at high loads at 150°C, e.g, those of aircraft, cars and trucks, etc. Proposed composition contains the following substances, in wt %: 5.5-6.5 Zn, 1.7-2.3 Mg, 0.4-0.7 Ni, 0.3-0.7 Fe, 0.02-0.25 Zr, 0.05-0.3 Cu. Its solvus temperature does not exceed 410°C while hardness makes, at least 150 HV.EFFECT: higher strength and machinability.3 cl, 3 tbl, 3 ex, 2 dwg

Aluminium-based protective alloy // 2483133
FIELD: metallurgy.SUBSTANCE: proposed composition contains the following substances, in wt %: zinc - 4-5, indium - 0.01-0.1, zirconium - 0.01-0.1, titanium - 0.02-0.1, aluminium and impurities making the rest. Content of impurities in the alloy of iron, silicon and copper may no exceed 0.1, 0.1 and 0.01, respectively, while that of hydrogen must no exceed 0.20 cm3/100 g Me.EFFECT: higher efficiency and stability of electrochemical characteristics.2 cl, 3 tbl

High-strength alloy based on aluminium with calcium addition // 2478132
FIELD: metallurgy.SUBSTANCE: invention may be used for making critical parts operated at high loads at 100-150°C, e.g, those of aircraft, cars and trucks, etc. Aluminium-based alloy comprises 7-12% of Zn, 2-5% of Ca, 2.2-3.8% of Mg, 0.02-0.25% of Zr. Note here that its hardness makes at least 150 HV, σB>450 MPa. σ0.2>400 MPa.EFFECT: new high-strength alloy for thermal hardening, making shaped castings.4 tbl, 3 ex, 2 dwg

High-strength heat-treatable aluminium alloy // 2473710
FIELD: metallurgy.SUBSTANCE: ingot, at least, 4in-thick, is made from aluminium-based alloy containing, at least, 6.5 wt % of zinc and magnesium at zinc-to-magnesium ratio of 5:1. Said ingot features, at quarter of thickness, the tensile strength of, at least, 61 kgft/sq.in and yield points of, at least, 54.5 kgft/sq.in. Proposed method comprises the following stages: 12 in-thick ingot is cast from aluminium-based alloy containing: 6-8 wt % of Zn, 1-2 wt % of Mg, with Mg content making (0.2 × Zn - 0.3) wt %-(0.2 × Zn + 0.3) wt %, at least, one element forming intermetallic dispersoids, aluminium and unavoidable impurities making the rest. Then, ingot is homogenised at 820°F to 980°F, and cooled by one of below methods: forced feed of air, water mist and water spray. Then, it is artificially aged at 240°F to 320°F to allow age-hardening.EFFECT: high strength, low sensitivity to quenching.12 cl, 8 dwg, 6 tbl, 2 ex
High-strength heat-treatable aluminium alloy and article made thereof // 2473709
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy of light alloys, particularly, to super strong heat-treatable aluminium alloys of Al-Zn-Mg-Cu system intended for making semis, i.e. formed and rolled tubes, stamped covers to be used as has centrifuge parts. Articles are made from alloy containing the following components in wt %: zinc 8.0-9.0, magnesium 2.3-3.0, copper 2.0-2.6, zirconium 0.1-0.2, beryllium 0.0001-0.002, cerium 0.005-0.05, calcium 0.005-0.05, titanium 0.005-0.05, iron up to 0.15, silicon up to 0.1, and at least of element of the group: manganese up to 0.1, aluminium making the rest.EFFECT: higher strength, ductility, toughness, fatigue strength.2 cl, 2 tbl, 1 ex

Products from aluminium alloy, which have improved combinations of properties // 2465360
FIELD: metallurgy.SUBSTANCE: plate from aluminium alloy consists of 6.8-8.5 wt % Zn, 1.75-2.3 wt % Cu, 1.5-1.84 wt % Mg and up to 0.25 wt % at least of one of Zr, Hf, Sc, Mn and V, and if necessary, additives crushing the grain, and the rest includes aluminium and inevitable impurities; at that, plate has the thickness of not more than 2.00 inches. Plate has the ratio between yield strength and failure viscosity, which meets the following equation: FT_LT ≥ -4.0* (TYS_L)+453. Plate has TYS_L that is at least 80 ksi and FT_LT that is at least 100 ksi√ inch, where TYS_L - tensile yield strength of the plate in direction L, in ksi, which is measured in compliance with ASTM E8 and ASTM B557, FT_LT - failure viscosity (Kapp) of the plate in flat stressed state in direction L-T, in ksi√inch, which is measured in compliance with ASTM E561 and B646 on specimen of aluminium alloy with central crack in position T/2 of the plate; at that, specimen has the width of 16 inches, thickness of 0.25 inches and initial length of preliminary fatigue crack of 4 inches.EFFECT: plates are made from aluminium alloys having high failure viscosity at maintaining the acceptable strength level.32 cl, 10 dwg, 10 tbl, 4 ex
anufacturing method of sandwich plate based on aluminium for bullet-proof welded armour // 2457422
FIELD: weapons and ammunition.SUBSTANCE: method consists in obtaining the workpiece to be rolled and its heating, hot rolling of plate according to the size requirements, cooling down to room temperature and artificial ageing. Production of workpieces to be rolled involves rolling according to the size requirements of ingots and/or slabs from aluminium alloys for sandwich plate and assembly of a pack using them. Pack is heated at 500-550°C during 5-7 hours. Rolling according to the size requirements is performed at 410-450°C. Additional hardening is performed at 450-480°C. Artificial ageing is performed at temperature of 110-120°C during 24-36 hours.EFFECT: improving armour properties and durability of sandwich plate.5 cl, 1 tbl
High-strength aluminium alloy and method for its obtaining // 2451097
FIELD: metallurgy.SUBSTANCE: aluminium-based alloy contains the following, wt %: zinc - 6.35 - 8.0, magnesium - 0.5 - 2.5, copper - 0.8 -1.3, iron - 0.02 - 0.25, silicon - 0.01 - 0.20, zirconium - 0.07 - 0.20, manganese - 0.001 - 0.1, chrome - 0.001 - 0.05, titanium - 0.01 - 0.10, boron - 0.0002 -0.008, beryllium - 0.0001 - 0.05, at least one element from potassium, sodium, calcium group in quantity of 0.0001 - 0.01 each, aluminium is the rest; at total content of zinc, magnesium, copper within 8.5-11.0, and that of zirconium, manganese and chrome - within 0.1-0.35. Method involves loading and melting of charge components, flux treatment of molten metal, molten metal purification, further vacuum treatment of molten metal in mixer and casting of ingots; boron is added to molten metal in the form of Al-Ti-Be alloy which is distributed at least one hour before molten metal pouring to mixer along the whole surface area of mixer bottom; at that, mixer is pre-heated to temperature which is by 15-30°C more than molten metal temperature, and vacuum treatment of molten metal in mixer is performed at temperature of 695-720°C, during 45-90 minutes.EFFECT: invention allows obtaining high-strength aluminium alloys with absence of primary intermetallic compounds, decreased content in them of non-metallic inclusions and dissolved gases, with stable properties and optimum size of grain on basis of standard furnace and process equipment.2 cl, 3 tbl
Superhard aluminium-based alloy // 2449037
FIELD: metallurgy.SUBSTANCE: there proposed is aluminium-based alloy intended for manufacture of deformed semi-finished products in the form of sheets, formings, rods, tubes or in any other form to be used in gas centrifuges, low pressure compressors, vacuum molecular pumps and in other heavily loaded items operating at moderately increased temperatures. Alloy contains the following components, wt %: zinc 6.6-7.4, magnesium 3.2-4.0, copper 0.8-1.4, scandium 0.12-0.30, zirconium 0.06-0.20, titanium 0.01-0.07, molybdenum 0.01-0.07, nickel 0.35-0.65, iron 0.35-0.65, silcone 0.10-0.30, and aluminium is the rest.EFFECT: improving strength properties of alloy at room temperature.3 tbl, 1 ex

Aluminium-based cast alloy // 2447174
FIELD: metallurgy.SUBSTANCE: aluminium-based cast alloy has the following chemical composition, in wt %: Cu 3.5-6.0, Mg 0.2-0.9, Ti 0.1-0.4, Zr 0.1-0.5, Mn 0.2-1.2, Zn 0.5-2.5, Sc 0.15-0.5, Al making the rest.EFFECT: reduced metal consumption, higher reliability in operation.2 tbl
Products from aluminium alloy of aa7000 series and their manufacturing method // 2443797
FIELD: metallurgy.SUBSTANCE: invention relates to alloy of AA7000 series and to the manufacturing method of products from this aluminium alloy, and namely to aluminium deformed products of relatively large thickness, namely of 30 to 300 mm. Method involves casting of workpiece - ingot of aluminium alloy of AA7000 series, which contains >0.12 to 0.35% Si, pre-heating and/or homogenisation of workpiece, hot deformation treatment of workpiece using one or more methods chosen from the group, which involves rolling, extrusion and forging, optionally cold deformation treatment, solution treatment, workpiece solution treatment cooling, optional tension or compression or other cold deformation treatment for release of stresses, which is performed by straightening or drawing or by cold rolling, ageing of workpiece in order to achieve the required state. At least one heat treatment is performed at temperature in the range of more than 500°C, but lower than solidus temperature of the considered aluminium alloy. The above heat treatment is performed either: (i) after heat treatment by homogenisation prior to hot deformation treatment, or (ii) after solution treatment, or (iii) both after heat treatment by homogenisation prior to hot deformation treatment, and after solution treatment.EFFECT: obtaining the product from deformed aluminium alloy, which has improved balance of properties, and namely destruction viscosity, tensile yield point, tensile ultimate strength and relative elongation.30 cl, 8 tbl, 3 ex

High-strength aluminium-based alloy and method for obtaining items from it // 2443793
FIELD: metallurgy.SUBSTANCE: group of inventions can be used at manufacture of semi-finished products in the form of forgings, formings, pressed rods and channels, rolled plates and sheets from high-strength alloys of Al-Zn-Mg-Cu system, which are intended to be used in power structures of aerospace equipment and transport means, on which stringent strength, crack resistance, fatigue life, corrosion resistance requirements are imposed. In order to solve the set task, high-strength alloy on the basis of aluminium, which contains the following, wt %, is proposed: Zn 6.2-8.0, Mg 1.5-2.5, Cu 0.8-1.2, Zr 0.05-0.15, Fe 0.03-0.15, Ti 0.01-0.06, at least one element of the group of metals: Ag 0.01-0.5, Sc 0.01-0.35, Ca 0.0001-0.01, Al and inevitable impurities are the rest. In particular version of alloy the inevitable impurities include not more than 0.05 of Si, Mn, Cr, Ni and not more than 0.01 of Na, H2, O2, B, P. Method for obtaining an item from this alloy involves ingot casting, its homogenisation, hot deformation and strengthening heat treatment of the item, which includes hardening and staged ageing; at that, during the ingot casting there performed is melt purification by blowing with argon or mixture of argon with chlorine and out-of-furnace purification using rotor and/or filtering devices, and homogenisation is performed as per one-stage mode at temperature which is by 55-130°C lower than unbalanced solidus (tu.s.) temperature of this alloy with exposure during 8-36 h or as per two-stage mode at temperature at the first stage at the temperature which is by 175-280°C lower than tu.s. temperature, and at the second stage at the temperature which is by 75-125°C lower than tu.s., with exposure at each stage to 24-36 h; hot deformation is performed at temperature of 300-420°C, hardening is performed at temperature which is by 50-120°C lower than tu.s. during the time determined with the item thickness, with further cooling to temperature of not more than 80°C.EFFECT: improving the set of mechanical and corrosive characteristics, and characteristics of crack resistance, life time and manufacturability.10 cl, 1 tbl

Al-zn-cu-mg alloys on base of aluminium, procedures for their production and implementation // 2425902
FIELD: metallurgy.SUBSTANCE: invention refers to alloys on base of aluminium, particularly to Al-Zn-Cu-Mg alloys on base of aluminium, and also to procedure of fabrication of rolled or forged deformed product of it and to rolled or forged deformed product proper. The procedure consists in following stages: a) casting an ingot, containing wt % Zn 6.6-7.0, Mg 1.68-1.8, Cu 1.7-2.0, Fe 0-0.13, Si 0-0.10, Ti 0-0.06, Zr 0.06-0.13, Cr 0-0.04, Mn 0-0.04, additives and other side elements ≤0.05 each, b) homogenising of the said ingot at 860-930°F or, preferably, at 875-905°F, c) hot deformation treatment of the said ingot with temperature at input 640-825°F, but preferably - 650-805°F by rolling or forging to a plate with finish thickness from 2 to 10 inches, d) thermal treatment for solid solution and quenching the said plate, e) drawing the said plate with residual deformation from 1 to 4 %, f) ageing the said plate by heating at 230-250°F during from 5 to 12 hours and 300-360°F during from 5 to 30 hours during equivalent time t(eq) between 31 and 56 hours. Equivalent time t(eq) is determined from formula: where T corresponds to instant temperature in K during annealing, while Tcontr corresponds to control temperature equal to 302°F (423K), and t(eq) is expressed in hours.EFFECT: production of deformed product possessing improved combination of mechanical strength for corresponding level of crack resistance and resistance to corrosion cracking under load.8 cl, 2 dwg, 10 tbl, 4 ex
High-strength alloy on base of aluminium // 2419663
FIELD: metallurgy.SUBSTANCE: alloy on base of aluminium contains following components wt %: zinc 5-8, magnesium 2-3.1, nickel 1-4.2, iron 0.02-1, zirconium 0.02-0.25 %, copper 0.05-0.3 %. Also, temperature of equilibrium solidus of material is as high as 550°C and hardness is as high as 180 HV. Alloy has a structure corresponding to matrix formed with solid solution of aluminium with uniformly distributed disperse particles of secondary discharges in it and particles of aluminides containing nickel and iron of eutectic origin uniformly distributed in matrix. Also, alloy contains matrix and aluminides at the following ratio, vol % aluminides containing nickel and iron 5.0-6.3, matrix - the rest.EFFECT: production of new high-strength alloy thermally hardenable and designed both for fabrication of shaped casting and of deformed semi-products.4 cl, 5 tbl, 4 ex

Product out of deformed aluminium alloy of aa7000 series and procedure for production of said product // 2413025
FIELD: metallurgy.SUBSTANCE: product consists of following components, wt %: Zn 9.0-14.0, Mg 1.0-5.0, Cu 0.03-0.25, Fe <0.30, Si <0.25, Zr from 0.04 to less, than 0.3 and one or more elements chosen from group consisting of: Ti <0.30, Hf <0.30, Mn <0.80, Cr <0.40, V <0.40 and Sc <0.70, random elements and impurities, each <0.05, totally <0.15, and aluminium - the rest. The procedure for fabrication of product out of aluminium alloy consists in casting an ingot, in homogenisation and/or in preliminary heating the ingot upon casting, in hot treatment of the ingot into preliminary finished product with one or more methods, chosen from the group including rolling, extrusion and forging. Not necessarily, the preliminary treated product can be heated or hot treated and/or cold treated to a required shape of a blank; further formed blank is subjected to heat treatment to solid solution, to hardening blank heat treated to solid solution; not necessarily, hardened blank can be stretched or compressed, or cold treated by other way to stress relief, for example, by levelling sheet products or artificial ageing, till obtaining a required condition.EFFECT: product with reduced tendency to forming hot cracks and with improved characteristics of strength, fracture toughness and hardness over 180 HB at artificially aged state.32 cl, 6 tbl, 6 ex

Deformed aluminium alloy of aluminium-zinc-magnesium-scandium system and procedure for its production // 2406773
FIELD: metallurgy.SUBSTANCE: invention refers to deformed alloys of aluminium-zinc-magnesium-scandium system and to procedure for their production. Aluminium alloy contains from 0.5 to 10 wt % Zn, from 0.1 to 10 wt % Mg, from 0.01 to 2 wt % Sc, at least 0.01 wt % at least one alloying additive chosen from Ag at amount of up to 1 wt % and Sn at amount of up to 0.5 wt %, aluminium and unavoidable additives - the rest. The procedure consists in production of the said aluminium alloy, in homogenisation, in extrusion, in treatment for solid solution, in quenching, in straightening with drawing and in ageing.EFFECT: alloys possess good qualities such as relatively high strength and excellent corrosion resistance.33 cl, 3 dwg, 4 tbl
Product from high-strength, high-viscosity al-zn alloy and manufacturing method of such product // 2404276
FIELD: metallurgy.SUBSTANCE: method involves ingot casting with the following composition, wt %: Zn 6.0 - 11.0, Cu 1.4 - 2.2, Mg 1.4 - 2.4, Zr 0.05 - 0.15, Ti <0.05, Hf and/or V <0.25, optionally Sc and/or Ce 0.05 - 0.25%, optionally Mn 0.05 0.12%, and inevitable impurities and aluminium is the rest, homogenisation and/or pre-heating of ingot after casting, hot deformation processing of ingot so that pre-processed product is obtained, heating of pre-processed product and either hot rolling of heated product to final thickness, or hot rolling and cold rolling of heated product to final thickness, heat treatment for solid solution and hardening of heat-treated product for solid solution, optional tension or compression of hardened product and optional ageing of hardened and optionally tensed or compressed product to the desired state; at that, rolled product at its final state has in fact fully non-recrystallised microstructure at least in position T/10.EFFECT: product has increased yield point at compression and high specific energy of crack propagation, and improved viscosity and corrosion resistance properties.21 cl, 6 tbl, 3 ex
Aluminium-based alloy // 2403304
FIELD: metallurgy.SUBSTANCE: aluminium-based alloy contains the following, wt %: zinc 0.5-0.7; titanium 0.1-0.13; silver 1.1-1.3; nickel 0.25-0.5; copper 0.15-0.25; cobalt 0.7-0.9; aluminium - the rest.EFFECT: alloy is characterised with increased strength.1 tbl, 3 ex
Protecting alloy on base of aluminium // 2395605
FIELD: metallurgy.SUBSTANCE: invention refers to metallurgy of protecting alloys on base of aluminium and can be implemented at production of protectors for aluminium heat exchangers on airplanes, sea and river vessels, domestic heaters and also fuselages of hydroplanes and vessels out of aluminium alloys for protection from corrosion. Protecting deformed alloy on aluminium base contains following components, wt %: zinc 1.8-3.0, magnesium 0.4-0.8, silicon 0.3-0.6, tin 0.03-0.07, indium 0.06-0.07, aluminium - the rest.EFFECT: production of protecting alloy possessing upgraded mechanical properties which facilitates fabrication of protectors of various shape, small dimensions and big length.2 tbl, 1 ex
High-tensile deformed alloy on base of aluminium and item out of this alloy // 2394113
FIELD: metallurgy.SUBSTANCE: invention refers to deformed thermally hardened high-tensile aluminium alloys Al-Zn-Mg-Cu designed for fabrication of all kinds of deformed semi-finished products, including thin sheets used in aircraft and machine engineering and other branches of industry. Deformed alloy on base of aluminium and an item out of it contain the following components, wt %: zinc 2.5-4.0, magnesium 4.1-6.5, copper 0.2-1.0, iron to 0.25, silicon to 0.15, scandium 0.005-0.3, zirconium 0.005-0.25, nickel and/or cobalt to 0.1, titanium to 0.15, boron and/or carbon to 0.05, at least one element out of group: hafnium to 0.15, molybdenum to 0.15, cerium to 0.15, manganese to 0.5, chromium to 0.28, yttrium to 0.15, vanadium to 0.15, niobium to 0.15, aluminium and unavoidable impurities - the rest, also ratio of Mg contents to Zn contents is more or equal to 1.1.EFFECT: production of alloy and items out of it possessing raised strength properties at simultaneous increased wear-resistance, reduced rate of crack growth, increased durability of welded connections and reduced density, which results in increased resource and reliability of items operation and in reduced weight of structures.3 cl, 2 tbl, 1 ex
Aluminium-based alloy // 2391432
FIELD: metallurgy.SUBSTANCE: invention refers to metallurgy, particularly to aluminium-based alloys which can be applied in dishware and coin production. Aluminium-based alloy contains, wt %: zinc 1.3-1.8; titanium 0.01-0.015; silver 1.3-1.8; nickel 1.3-1.8; cobalt 1.3-1.8; indium 0.2-0.3; the rest is aluminium.EFFECT: production of alloy of enhanced hardness.1 tbl
Aluminium-based alloy // 2391431
FIELD: metallurgy.SUBSTANCE: particularly it concerns alloys on aluminium basis, which can be used in automotive industry. Aluminium-based alloy contains the following components, wt %: zinc 2.0-2.5; antimony 0.01-0.015; titanium 0.01-0.015; boron 0.007-0.009; beryllium 0.001-0.002; cobalt 0.6-0.9; the rest is aluminium.EFFECT: production of alloy of enhanced hardness.1 tbl
Aluminium-based alloy // 2391430
FIELD: metallurgy.SUBSTANCE: particularly it concerns alloys on aluminium basis, which can be used in automotive industry. Alloy on aluminium base contains the following elements, wt %: zinc 2.0-2.5; antimony 0.01-0.015; titanium 0.1-0.15; boron 0.007-0.009; beryllium 0.001-0.002; copper 0.1-0.15; silver 0.1-0.15; cobalt 0.2-0.3; the rest is aluminium.EFFECT: production of alloy of enhanced hardness.1 tbl
Aluminium-based alloy // 2391429
FIELD: metallurgy.SUBSTANCE: particularly it concerns aluminium-based wrought alloys which can be used in automotive industry. Alloy on aluminium base contains the following elements, wt %: zinc 7.0-9.0, magnesium 2.4-2.8, copper 0.6-0.8, zirconium 0.01-0.015, manganese 0.01-0.015, titanium 0.01-0.015, chromium 0.01-0.015, beryllium 0.01-0.015, niobium 0.3-0.4, the rest is aluminium.EFFECT: production of alloy of enhanced hardness.1 tbl
Aluminium-based alloy // 2391428
FIELD: metallurgy.SUBSTANCE: particularly it concerns alloys on aluminium basis, which can be used in automotive an aircraft industry. Alloy on aluminium base contains the following elements, wt %: zinc 0.2-0.4, antimony 0.001-0.003, titanium 0.001-0.003, silver 0.2-0.3, cobalt 0.5-0.7, the rest is aluminium.EFFECT: production of alloy of enhanced hardness.1 tbl
 
2551050.
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