High-strength aluminium-based alloy
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
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
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
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.
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.
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
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
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
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
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
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
SUBSTANCE: aluminum based protective alloy comprises, in mass %, 4-5 of zinc, 0.01-0.06 of indium, 0.01-0.1 solder, 0.01-0.1 of zirconium, and aluminum the remainder.
EFFECT: enhanced corrosion protection.
SUBSTANCE: invention relates to aluminum-base alloys used for making deformed semifinished products used in industry and building. Proposed alloy comprises the following components, wt.-%: zinc, 4.5-5.6; magnesium, 1.6-2.1; manganese, 0.2-0.8; scandium, 0.03-0.09; zirconium, 0.05-0.12; copper, 0.1-0.3; titanium, 0.01-0.07; molybdenum, 0.01-0.07; cerium, 0.001-0.01, and aluminum, the balance, wherein the ratio content of zinc to magnesium = 2.6-2.9. Invention provides the development of alloy providing enhancing corrosion resistance of articles.
EFFECT: improved and valuable properties of alloy.
2 tbl, 1 ex
FIELD: metallurgy of aluminum alloys; manufacture of wrought semi-finished products for transport engineering and other industries.
SUBSTANCE: proposed alloy includes the following components, mass-%: zinc, 3.6-4.1; 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; the remainder being aluminum.
EFFECT: enhanced corrosion resistance and technological ductility of semi-finished items at plastic metal working.
2 tbl, 1 ex
SUBSTANCE: invention relates to aluminum-base material. Proposed material comprises the following components, wt.-%: zinc, 6-8; magnesium, 2.5-3.5; nickel, 0.6-1.4; iron, 0.4-1.0; silicon, 0.02-0.2; zirconium, 0.1-0.3; scandium, 0.05-0.2, and aluminum, the balance wherein the temperature of equilibrium solidus of material is 540°C, not less, the hardness value of material is 200 HV, not less. Invention provides the development of the novel high-strength material designated for both producing fashioned ingots and deformed semifinished product possessing high mechanical properties. Invention can be used in making articles working under effect of high loading, such as car articles and sport inventory articles.
EFFECT: improved and valuable properties of material.
4 cl, 2 dwg, 4 tbl, 3 ex
FIELD: nonferrous metallurgy.
SUBSTANCE: invention relates to ultrastrong economically alloyed aluminum-based alloys belonging to system Al-Zn-Mg-Cu. Alloy and article made therefrom are, in particular, composed of, %: zinc 3.5-4.85, copper 0.3-1.0, magnesium 1.2-2.2, manganese 0.15-0.6, chromium 0.01-0.3, iron 0.01-0.15, silicon 0.01-0.12, scandium 0.05-0.4, at least one element from group: zirconium 0.05-0.15, cerium 0.005-0.25, and aluminum - the rest.
EFFECT: increased characteristics of corrosion resistance, bondability with all welding techniques, and lowered fatigue crack growth rate.
2 cl, 2 tbl
SUBSTANCE: invention proposes alloy containing the following components, wt.-%: zinc, 5.4-6.2; magnesium, 2.51-3.0; manganese, 0.1-0.3; chrome, 0.12-0.25; titanium, 0.03-0.10; zirconium, 0.07-0.12; beryllium, 0.0002-0.005; sodium, 0.0001-0.0008; copper, 0.2, not above; iron, 0.3, not above; silicon, 0.2, not above, and aluminum, the balance. Alloy provides enhancing uniformity of armor structure and its welded seams, stable armor resistance of extended armor welded seams independently on disposition of units to bed welded, elimination of splits from armor rear site in case its resistance to a missile impact, elimination possibility for reducing tenacity of armor during its exploitation including using under conditions of combination with dynamic protection of armored-body and armor-carrying mechanized objects. Invention can be used in producing armor for individual protection and for protection of mechanized armor-carrying objects against effecting agents.
EFFECT: improved and valuable properties of alloy.
SUBSTANCE: invention proposes alloy comprising the following components, wt.-%: zinc, 4.7-5.3; magnesium, 2.1-2.6; chrome, 0.12-0.25; titanium, 0.03-0.10; zirconium, 0.07-0.12; beryllium, 0.0002-0.005; iron, 0.05-0.35; silicon, 0.05-0.25; boron, 0.0003-0.003; sodium, 0.0001-0.0008; copper, 0.2, not above, and aluminum, the balance. Proposed alloy provides enhancing the armor structure uniformity and its welded joints, to provide stable armor resistance of extended welded joints of armor and independently of location of units to be welded, to exclude splitting off from rear side of armor in case armor not piercing by a missile, to exclude possibility for decreasing tenacity of armor in exploitation including using under conditions of combination with external dynamic protection of armored-carcass and armored-carrying mechanized objects. Invention can be used in producing armor for armored-carrying equipment for protection against effect of affection agents.
EFFECT: improved and valuable technical properties of alloy.
SUBSTANCE: invention proposes alloy comprising the following components, wt.-%: zinc, 4.7-5.3; magnesium, 2.1-2.6; manganese, 0.05-0.15; chrome, 0.12-0.25; titanium, 0.03-0.10; zirconium, 0.07-0.12; beryllium, 0.0002-0.005; iron, 0.05-0.35; silicon, 0.05-0.25; sodium, 0.0001-0.0008; copper, 0.2, not above, and aluminum, the balance. Proposed alloy provides enhancing armor structure uniformity and its welded joins, to provides stable armor resistance of armor welded joints being independently on location of units to be welded, to exclude splitting off from rear side of armor in case armor not piercing by missile, to provide high tenacity of armor including its using under conditions of combination with external dynamic protection of armored-carcass and armor-carrying mechanized objects. Invention can be used in producing armor for armor-carrying equipment for its protection against protection of affecting agents.
EFFECT: improved and valuable properties of alloy.
SUBSTANCE: the present innovation deals with obtaining aluminum-based alloys necessary for manufacturing stampings, particularly those of automobile wheels disks. The alloy in question has got the following composition, weight%: copper 0.8-2.2; magnesium 1.2-2.6; manganese 0.2-0.6; iron ≤0.25; silicon ≤0.20; zinc 5.0-6.8; titanium ≤0.1; chromium 0.08-0.17; zirconium 0.01÷0.12; boron 0.0008-0.005; antimony 2.5-3.5; indium 2.5-3.5; boron 0.4-0.5; hydrogen (0.3-4.1)10-5, aluminum - the rest. The alloy in question is of optimal combination of strength and plasticity that guarantee the required level of performance characteristics of automobile wheels disks, the decrease of their weight in combination with high technological effectiveness at volumetric stamping, especially complex-shaped articles.
EFFECT: higher strength and plasticity of the alloy.
2 cl, 1 ex, 3 tbl
FIELD: metallurgy, alloys.
SUBSTANCE: invention relates to compositions of deformable aluminum-base alloys. Proposed alloy comprises the following components, wt.-%: zinc, 5.0-7.0; magnesium, 0.4-0.8; copper, 0.8-1.2; manganese, 0.8-1.2; zirconium, 0.2-0.3; titanium, 0.2-0.3; niobium, 0.2-0.3; nickel, 3.0-5.0; boron, 0.02-0.03, and aluminum, the balance. Proposed alloy possesses the enhanced strength. Proposed alloys can be used in aircraft construction and automobile construction.
EFFECT: improved and valuable property of alloy.