Aluminium-based deformable alloy for braze structures |
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IPC classes for russian patent Aluminium-based deformable alloy for braze structures (RU 2557043):
    
 Multi-layer material with high strength at high temperature for heat exchanger sheets / 2556796
Invention relates to method of production of the multi-layer material for high temperature brazing, and can be used, for example, to manufacture heat exchange sheets. The method ensures core layer out of first aluminium alloy containing in wt %: 0.5-2.0% Mn, < 1.0% Mg, < 0.2% Si, < 0.3% Ti, < 0.3% Cr, < 0.3% Zr, < 0.2% Cu, < 3% Zn, < 0.2% In, < 0.1% Sn, and < 0.7% (Fe+Ni), Al rest and <0.05% each of inevitable admixtures; assurance of the barrier layer out of second aluminium alloy containing in wt %: < 0.2% Mn+Cr, < 1.0% Mg, 1.6-5% Si, < 0.3% Ti, < 0.2% Zr, < 0.2% Cu, < 3% Zn, < 0.2% In, < 0.1% Sn and < 1.5% (Fe+Ni), Al rest, and < 0.05% each of inevitable admixtures; joint rolling of layers; heat treatment at temperature from 300 to 550°C for time period necessary to balance content of Si to 0.4-1% both in core layer, and in barrier layer; rolling of the multi-layer material to final thickness with compression degree from 8 to 33%.
 Initial material for metal article from foil and process of its fabrication / 2556431
Invention relates to production of articles from aluminium alloys, particularly, to production of aluminium foil to be used as domestic foil, packing material, etc. this foil of produced by moulding of 6mm-deep strip, rolling it as-heated without mod annealing to depth smaller than 1 mm and further annealing. Note here that said aluminium alloy is aluminium alloy of series 1xxx, 3xxx or 8xxx. Aluminium alloy results from this processing that has no intermetallic beta-phase particles. Note here that this foil features depth of 5-150 mcm and structure, in fact, has no pores caused by axial liquidation of intermetallic particles.
Modifying mixture / 2553125
Modifying mixture contains the following components in wt %: barium carbonate 40-50, calcined soda 10-20, strontium carbonate 40-45.
 Method for obtaining wear-resistant antifriction alloy / 2552208
Invention relates to powder metallurgy of aluminium-based alloys used in journal bearings. A method for obtaining an antifriction wear-resistant alloy on the basis of aluminium involves obtainment of a mixture of pure powders of aluminium and stannum, which contains 35-45 wt % stannum, formation of briquettes with porosity of 12-18%, their sintering in a noncorrosive atmosphere at the temperature of 585-615°C during 45-60 minutes with further angular pressing of a sintered alloy so that orientation of a material flow plane is maintained during plastic processing at deformation intensity of at least 100%.
 Aluminium-based alloy for braze structures / 2551721
Alloy contains, wt %: manganese 0.3-1.2, silicon 0.35-1.5, magnesium 0.4-1.4, copper 0.3-4.8, iron - 0.05-0.7, beryllium 0.0001-0.1, chrome, titanium, zirconium, vanadium - 0.1-1.0 of each, aluminium - the rest, at the ration Si:Mg > 0.6, and at the content of chrome, titanium, zirconium, vanadium in the range of 0.1-0.25% of each the alloy is obtained by processing of the ingot, and at the content of the named components amounting 0.25-1.0% of each the alloy is obtained using powder technology.
Cable material based on aluminium alloy with high degree of elongation, and method for its obtaining / 2550063
Invention relates to material for cables based on aluminium alloy and to a method for its obtaining. Aluminium-based alloy contains the following, wt %: 0.3-1.2 Fe, 0.03-0.10 Si, 0.01-0.30 rare-earth elements Ce and La, inevitable impurities - less than 0.3 and aluminium is the rest; content of Ca in impurities is 0.02%, and content of any other impurity element - 0.01%. An alloy obtaining method involves preparation of a melt by melting of 92-98 weight parts of aluminium melt containing 0.07-0.12% Si and 0.12-0.13% Fe, and 0.73-5.26 weight parts of Al-Fe melt with content of Fe of 20-24%, heating of melt to 720-760°C, addition of 1-3 weight parts of Al alloy - 9-11% rare-earth elements Ce and La and 0.17-0.67 weight parts of Al alloy - 3-4% B, addition of 0.04-0.06 weight parts of a refining agent and refining during 8-20 minutes, exposure at the temperature during 20-40 minutes, casting and further semi-annealing at the temperature of 280-380°C during 4-10 hours with natural cooldown to ambient temperature.
 Aluminium alloy / 2544331
Alloy contains the following components, wt %: zirconium 0.15-0.40, silicone 0.03-0.15, iron 0.15-0.35, magnesium 0.01-0.60, copper 0.005-0.01, zinc 0.005-0.02, boron 0.001-0.003, a sum of impurities of titanium, chrome, vanadium, manganese of up to 0.030, and aluminium is the rest.
Antifriction alloy based on aluminium, and method for its production / 2542154
Alloy includes the following component ratio, wt %: lead 20-40, zinc 5-15, and aluminium is the rest. An alloy obtaining method involves preparation of a hetero-phase alloy based on aluminium with 20-50 wt % of zinc, which is obtained by continuous mixing of the melt at 700°C during 10 minutes and quick cooling of the melt on a water-cooled copper plate, and contact of the obtained workpiece of the hetero-phase alloy to the lead melt at 530-570°C.
Aluminium-based heat-resistant metallic alloy / 2541263
Aluminium-based alloy contains the following, wt %: zirconium - 0.19-0.24; iron - 0.17-0.21; silicone - 0.05-0.08; aluminium and impurities are the rest, and has a structure formed by heat treatment at the temperature of 400°C, which consists of disperse particles of Al3Zr, phase, which is uniformly distributed in an aluminium matrix.
Aluminium-based cast composite and its alloys / 2538247
Aluminium-based cast composite or its alloys contains hardening intermetallic particles TiAl3 with the size no more than 25 mcm in amount up to 35 vol. % formed in aluminium melt by adding of grinded titanium sponge with the size of fractions no more than 5 mm.
Multi-layer material with high strength at high temperature for heat exchanger sheets / 2556796
Invention relates to method of production of the multi-layer material for high temperature brazing, and can be used, for example, to manufacture heat exchange sheets. The method ensures core layer out of first aluminium alloy containing in wt %: 0.5-2.0% Mn, < 1.0% Mg, < 0.2% Si, < 0.3% Ti, < 0.3% Cr, < 0.3% Zr, < 0.2% Cu, < 3% Zn, < 0.2% In, < 0.1% Sn, and < 0.7% (Fe+Ni), Al rest and <0.05% each of inevitable admixtures; assurance of the barrier layer out of second aluminium alloy containing in wt %: < 0.2% Mn+Cr, < 1.0% Mg, 1.6-5% Si, < 0.3% Ti, < 0.2% Zr, < 0.2% Cu, < 3% Zn, < 0.2% In, < 0.1% Sn and < 1.5% (Fe+Ni), Al rest, and < 0.05% each of inevitable admixtures; joint rolling of layers; heat treatment at temperature from 300 to 550°C for time period necessary to balance content of Si to 0.4-1% both in core layer, and in barrier layer; rolling of the multi-layer material to final thickness with compression degree from 8 to 33%.
 Solder for titanium and its allows soldering and method for soldering titanium and its alloys / 2539286
Proposed solder is composed of aluminium-based allow that contains the following elements in wt %: Cu 6.0-9.0; Ti≤1.0; Ni 1.0-2.0; Al making the rest. Solder solid phase temperature equals 540-545°C, while that of liquid phase - 635-640°C. Prior to soldering, parts surfaces are processed to make them rough. Said solder is placed between said surfaces. Parts are subjected to plastic deformation at pressure equal to stress not lower than solder yield point. Assembly to be soldered is heated in ambient air in furnace or subjected to local heating with holding at 645-650°C for 9-13 minutes. Parts can be shaped to plates, pipes and rings.
Aluminium brazing sheet / 2537052
Invention relates to a brazing sheet of a laminated aluminium alloy and can be used in the manufacture of heat exchangers. The brazing sheet of the laminated aluminium alloy consisting of the material of the base layer, which on one or both sides has an intermediate layer composed of Al-Si brazing solder located between the base layer and a thin coating layer over the intermediate layer. And the material of the base layer and the coating layer has a higher melting point than the Al-Si brazing solder. The coating layer comprises, in weight %: Bi 0.01-1.00, Mg ≤ 0.05, Mn ≤ 1.0, Cu ≤ 1.2, Fe ≤ 1.0, Si ≤ 4.0, Ti ≤ 0.1, Zn ≤ 6, Sn ≤ 0.1, In ≤ 0.1, unavoidable impurities ≤0.05, Al - the rest.
Silver-base solder / 2496625
Invention can be used for soldering and tin-plating of parts in jewellery industry, electronics, electrical engineering and instrument engineering. Solder contains the following component ratio, wt %: silver 64.5-65.5; copper 19.5-20.5; indium 3-5; zinc is the rest.
Solder for fluxless soldering / 2432242
Invention can be used to obtain permanent joints between different materials, particularly for low-temperature fluxless soldering ceramics and metal using diffusion-hardening solders based on gallium. The components of the solder are in the following ratio, wt %: gallium 32-45; copper-silver alloy 8-12; aluminium oxide 0.5-3; zinc 3-7; brass - the rest. The brass contains zinc in amount of up to 37 wt %, with copper making up the remaining amount.
 Aluminium based welding wire composition / 2393073
Invention relates to metallurgy of aluminium based alloys, particularly to welding materials designed for making welding wire for fuse welding structures from deformable non-heat-treatable alloy of the Al-Mg-Sc system. The alloy contains the following in wt %: magnesium 5.5-6.5; manganese 0.50-0.80; scandium 0.25-0.35; zirconium 0.10-0.20; titanium 0.02-0.05; chromium 0.10-0.20; vanadium 0.005-0.04; cerium 0.01-0.05; boron 0.004-0.01; beryllium 0.002-0.005; aluminium - the rest, where Mn+Sc+Ti+Zr=0.95-1.3.
Filler wire for welding of aluminium alloys / 2378095
Invention may be used for any technologies of welding by melting, in particular for welding in inertial gases by fusible electrode, tungsten electrode, for laser welding. Aluminium-based filler wire contains from 0.1 to 6 wt % of titanium, part of which is represented in the form of particles TiB2 and/or TiC, and the other part - in the form of free titanium. As optional elements it may contain magnesium, manganese, chrome, iron, silicon, zinc, vanadium, zirconium, beryllium. Wire may be made on the basis of alloy of series 5xxx or series 4xxx.
Alloy on basis of aluminium for welded structures / 2368688
Invention relates to manufacturing of aluminium castable alloy for welded fabrications of quantity-produced, operating in conditions of oscillatory loads in different climatic zones. Alloy contains components in a following ratio, wt %: magnesium 4.5-5.8, manganese 0.4-0.8, titanium 0.05-0.09, beryllium 0.02-0.06, aluminium - the rest.
 Solder alloys on basis of silver / 2367553
Solder alloy can be used in jewellery industry, electronics, electrical engineering and instrument engineering. Solder alloy contains components in a following ratio, wt %: silver 39-41, copper 34-36, zinc 19-21, indium 4-6. Compounds of indium are virtually harmless for human's body.
Solder alloy on basis of silver / 2367552
Solder alloy can be used in jewellery industry, electronics, electrotechnics and instrument engineering. Solder alloy contains components in a following ratio, wt %: silver 39-41; copper 30-35; zinc 22-26; indium 1-3; tin 1-2. Alloy of solder alloy allows wide range of strength limit 390-530 MPa. Introduction of tin provides receiving of solder alloy in the form of powder with wide range of size composition 50-315 micrometre. Combinations of indium and tin are almost harmless for man body.
Zirconium base alloy for soldering / 2252848
Alloy contains next relation of ingredients, mass %: iron, 4.0 - 6.0; beryllium, more than 3.0 - 4.0; niobium, 0.9 - 1.1; copper, 4.0 - 8.0; tin, 1.0 - 3.0; chrome, 0.2 - 1.0; bismuth + arsenic, 0.0001 - 0.0018; sulfur, 0.0001 - 0.0015; zirconium and inevitable impurities, the balance. Alloy may contain in addition germanium in quantity 0.25 -2.5 mass %.
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FIELD: metallurgy. SUBSTANCE: invention relates to the aluminium-based deformable alloys intended for use in braze structures. An aluminium-based deformable alloy for braze structures contains, wt %: zinc 3.4-5.0, magnesium 1.0-2.5, manganese 0.2-0.9, chrome 0.1-1.0, zirconium 0.1-1.0, copper up to 0.5, beryllium 0.0001-0.01, hafnium - 0.1-1.5, titanium 0.1-1.0, vanadium - 0.1-1.0, aluminium - the rest. The tendency to recrystallisation decreases and the fine-grained structure remains after processing in the brazing mode at the temperature close to solidus. EFFECT: high characteristics of mechanical properties and corrosion resistance of brazing connections are provided. 6 dwg, 3 ex
The invention relates to wrought alloys aluminum-based, intended for use in brazed structures. A common requirement for alloys intended for use in brazed structures, is the retention of properties after exposure to soldering mode. Alloys based on aluminum for brazed structures are created on the basis of all known systems of alloying depending on the destination. With a penchant for samsuiluna and high solidus temperature of alloys of the system Al-Zn-Mg are a promising system for creating high-strength alloys for soldering the most refractory brazing intended for brazing of aluminum and alloys. Known alloy based on aluminium system Al-Zn-Mg intended for brazing, comprising (in % by weight) of 0.5-2.5 Zn, ≤0,05 Mg, 0,7-1,4 Mn, 0,7-1,4 Si, 0,5-1,4 Fe (European patent No. 2048252, C22C 21/00, C22F 1/00, C22F1/053, 18.06.2007). The alloy has, according to the authors, low strength: only 130 MPa. Known alloys of the system Al-Zn-Mg with various additives designed for brazing, comprising: - 3,0-7,0 Zn, 0.1 to 0.3 Mg, 0.1 to 0.5 Cr, 0,05-0,2 Ti, and 0.01 to 2.0 Ni (Japanese Patent No. 3194778 C22C 21/10 24.03.92), - 0,1-0,4 Zn, 0.1 to 0.7 Mg, 0,1-0,9 Si, 0,1-0,9 Mn, 0.05 to 0.5 Cu, and 0.05 to 0.3 Cr, of 0.02 to 0.2 Zr (Japanese patent No. 2-10212 C22C 21/00, 21/02, 07.03.90), - 0,8-2,5 Zn, to 0.008 Mg, 0,6-1,0 Si of 0.9-1.5 Mn, 0.1 to 0.4 Cu, 0.3 to 0.6 Ni, 0,03-0,3 Cr, 0,03-0,3 Zr may 0,005-0,1 In, 0,005-0,1 Sn (Patent Japan.� No. 3359115 7090444 C22C 21/00, F28F 21/08, 24.12.2002), - 3,1-3,9 Zn, 0.3 to 0.8 Mg, 0,2-0,9 Mn, 0,01-0,3 Cu, 0.05 to 0.5 Zr, and 0.01 to 0.3 Ti (Application of Japan No. 3 - 38332, C22C 21/10, 10.06.91), Alloys additionally alloyed with titanium, zirconium and/or elements that increase the recrystallization temperature. The disadvantage of the alloy is reduced strength after the soldering mode. The closest to the proposed technical essence and the achieved effect is alloy 1915 to HOST containing components in the following ratio, wt. %: aluminum - base, zinc 4,0-5,0, magnesium 1,0-1,8, manganese 0,2-0,7, chromium of 0.06-0.2, titanium 0,01-0,06, zirconium 0,08-0,2, copper to 0.5, beryllium on the calculation of the charge 0,0001-0,01, iron is not more than 0.4, silicon is not more than 0.35. The alloy is well-balanced in the content of the main alloying components, modifiers and intercrystallite with regard to the processes of hot and cold deformation. The temperature of the beginning and the end of recrystallization of the alloy is in the range 270-550°C. However, in the case of brazing at a temperature of more than 560-565°C the alloy is very prone to recrystallization. Coarse-grained recrystallized structure decreases and destabilizing properties of the alloy. The problem to be solved by the present invention is to reduce the tendency to recrystallization and preservation of fine-grained structure after� processing according to the mode of soldering at a temperature close to the solidus. The technical result - obtaining high mechanical properties and corrosion resistance of brazed joints. This is achieved in that the deformable base alloy aluminum brazed structures containing zinc, magnesium, manganese, chromium, zirconium, beryllium and copper, wherein it further comprises hafnium and/or titanium and/or vanadium in the following ratio of components, wt. %: zinc 3,4-5,0, magnesium 1,0-2,5, manganese 0,2-0,9, chromium 0.1 to 1.0, zirconium 0.1 to 1.0, copper to 0.5, beryllium 0,0001-0,01; hafnium is 0.1 to 1.5, titanium 0.1 to 1.0, vanadium 0.1 to 1.0, aluminium - the rest, in this case the total content of the at least three elements selected from the group: hafnium, chromium, titanium, zirconium and vanadium is at least 0.4 wt. % and the ratio of Zn: Mg in the alloy is selected in the range of 2-2,5. Zinc and magnesium provide hardening of the alloy by quenching and aging, including after processing according to the mode of soldering due to the quenching in air, by natural or artificial aging. The contents of zinc and magnesium determines the optimal ratio of mechanical and corrosion properties on the basis of the General principles of physical metallurgy of the alloys Al-Zn-Mg. The manganese content in the range of 0.2 to 0.9 wt. % provides the maximum effect of quenching and aging the alloy. Complex alloying, cu�ina least three elements selected from the group: hafnium, chromium, titanium, zirconium and vanadium in their total content is not less than 0.4 wt. % highly refines the structure and prevents recrystallization during high-temperature soldering, saving after soldering fine-grained structure. Hafnium, chromium, titanium, zirconium and vanadium after soldering are in solid solution or in the form of dispersed intermetallic compounds. Hardening of the hafnium, chromium, titanium, zirconium and vanadium makes up for the loss of strength with aging due to incomplete quenching after soldering. The hafnium content to 0.1-0.5%, chromium, titanium, zirconium and vanadium in the range of 0.1-0.2% of each used in the manufacture of the alloy by serial technology, and hafnium in the range of 0.5-1.5%, chromium, titanium, zirconium and vanadium in the range of 0.3 to 1.0% each - in the manufacture of the alloy pellet technology. Exceeding the specified content in each version of the technology leads to the formation of coarse intermetallics. Microdamage beryllium protects during melting liquid melt from oxidation. The copper content in the range of 0.5% increases the mechanical properties of the alloy and resistance to stress corrosion, without affecting the propensity to samsuiluna. Examples of specific applications. Example 1 Alloys based on aluminum for brazed structures containing (in mass%): 3,87 Zn, 1,64 Mg, 0,40 Mn,0,20 Hf, 0,15 Cr, 0,2 Zr 0,15 Cu, 0,001 Be. The Ratio Of Zn:Mg=2,36. The ingot with a diameter of 95 mm homogenized regime 470°C, 6 h, rebuffed until the workpiece cross section of 16×120 mm, roll on a strip of cross-section of 1.5×120 mm, tempered in water with a temperature of 470°C, after natural aging for 30 days was treated according to the regime rations 590°C, 15 min. As before (Fig. 1) and after treatment by the regime rations (Fig. 2) the alloy has a homogeneous fine-grained structure. Grain have not grown in comparison with the state prior to processing according to the mode of soldering, including in the heat affected zone of the joint (Fig. 3). Strength defined in the longitudinal direction at five times the standard samples according to GOST 1497, accounted for the alloy after hardening heat treatment of not less than 349 MPa, after processing according to the mode of soldering and re artificial aging is not less than 297 MPa. Example 2 Alloys based on aluminum for brazed structures containing (in mass%): 4,90 Zn, 2,14 Mg, 0,24 Mn, 1,45 Hf, 0,58 Cr, 0,18 Ti, 0,64 Zr Of 0.29 V, 0,01; Cu, 0,0001 Be. The Ratio Of Zn:Mg=2,29. From the melt centrifugal spray cast pellets were isolated fraction less than 0,63 mm, compacted into briquettes with a diameter Of 98 mm. briquette according to the technology described in example 1 received a strip of cross-section of 1.5×120 mm. Due�OC high speed cooling granules (10 3-104deg/s) alloy structure is more dispersed than in example 1, including after processing according to the mode of soldering. In the zone of thermal influence solder joint, as in example 1, the increase of grain is virtually nonexistent. Strength determined on specimens similar to example 1, amounted to alloy after hardening heat treatment of not less than 380 MPa, after processing according to the mode of soldering and re artificial aging not less than 311 MPa. Example 3 Alloys based on aluminum for brazed structures containing (in mass%): 5,0 Zn, 2,5 Mg, 0,2 Mn, 0,50 Cr, 0,2 Ti, 0,50 Zr 0,20 V, 0,01 Cu, 0,001 Be. The Ratio Of Zn:Mg=2. From the melt according to the technology described in example 2, the centrifugal spray cast pellets were isolated fraction less than 0,63 mm, compacted into briquettes with a diameter Of 98 mm. briquette according to the technology described in example 1 received a strip of cross-section of 1.5×120 mm. Due to the high cooling rate of the granules (103-104deg/s) alloy structure is more dispersed than in example 1, including after processing according to the mode of soldering. In the zone of thermal influence solder joint, as in examples 1 and 2, the increase of grain is virtually nonexistent. Strength determined on specimens similar to example 1, amounted to alloy after hardening heat treatment of at least 20 MPa, after processing according to the mode of soldering and re artificial aging no less than 291 MPa. Example 4 (prototype). An alloy based on aluminum, containing (in weight%): 3,80 Zn, 1,60 Mg, 0,40 Mn, 0,15 Cr, 0,15 Zr 0,4 Cu, 0,001 Be. The Ratio Of Zn:Mg=2,38. The technology for producing the alloy corresponded to example 1. In the fine-grained structure of the alloy (Fig. 4) are the inclusion of intermetallic coarser than in example 1. After processing according to the mode of soldering large grain, recrystallized (Fig. 5). In the heat-affected zone of a brazed joint is recrystallization, grain growth of the base metal and diffusion of solder in the base metal on the limits of the recrystallized grains of the HAZ (Fig. 6), causing embrittlement and reduced corrosion resistance of the brazed joint. Strength determined on specimens similar to example 1, amounted to alloy after hardening heat treatment of not less than 295 MPa, after processing according to the mode of soldering and re artificial aging of not less than 251 MPa. Thus, due to the complex alloying is provided a homogeneous fine-grained structure after processing according to the mode of soldering, high mechanical properties and corrosion resistance of brazed joints. Alloys based on aluminium brazed to design�of CCI, containing zinc, magnesium, manganese, chromium, zirconium, beryllium and copper, characterized in that it further comprises hafnium and/or titanium and/or vanadium in the following ratio of components, wt. %:
in this case the total content of the at least three elements selected from the group: hafnium, chromium, titanium, zirconium and vanadium is at least 0.4 wt. % and the ratio of Zn:Mg in the alloy is 2-2,5.
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