With weldability corrosion-resistant aluminum - magnesium alloys, primarily for use in transportation engineering

 

(57) Abstract:

The invention relates to possessing weldability corrosion resistant aluminum-magnesium alloy containing as an essential component of a three-part aluminum-scandium-zirconium phase. This alloy contains at least 3-5 wt.% magnesium (Mg), 0.05 to 0.15 wt.% zirconium (Zr), from 0.05 to 0.12 wt.% manganese (Mn), 0.01 to 0.2 wt.% titanium (Ti), 0.05 to 0.5 wt.% one or more elements of the group consisting of scandium (Sc), terbium (Tb), cerium (CE) and other lanthanides, the composition contains at least scandium (Sc), and aluminum (Al) and inevitable inclusion of silicon (Si) in an amount of a maximum of 0.2 wt.%. The proposed item of the above alloy, designed for air vehicles, primarily of the fuselage of the aircraft, sea vessel or vehicle and produced by welding, rolling, extrusion or forging. The technical result of the invention to provide with weldability corrosion resistant aluminum-magnesium alloy, which, along with high strength has a high threshold recrystallization. 2 S. and 3 C.p. f-crystals.

The present invention relates to about the three-component aluminum-scandium-zirconium phase. The alloy of this type is known, for example, from patent US 5624632 and thanks to its low density, high strength and corrosion resistance is of interest primarily for use in aircraft construction. Thanks additives of rare earth elements or elements such as rare earth, aluminum-magnesium alloy formed dispersoid contributing according to the above-mentioned U.S. patent to improve the strength and corrosion resistance. However, any data regarding characteristics of weldability of the alloy of this type in the specified U.S. patent no.

Based on the foregoing, the present invention was based on the task to develop with weldability corrosion resistant aluminum-magnesium alloy, which in its properties in terms of strength and corrosion resistance, at least, would not concede to the well-known alloy and in addition to good weldability would have a high threshold recrystallization. This problem is solved by the proposed aluminum-magnesium alloy according to p. 1 claims.

This new alloy is different from the known alloy primarily markedly lower content of manganese, however, as nered to made of the proposed alloy parts, susceptible to various kinds of loads, in this case, for example, for parts that are manufactured by a cold forming process, which for a long time exposed to high temperatures. Presumably decisive factor to achieve these positive properties is primarily the ratio of manganese and scandium. Thus, in particular, improving the corrosion resistance occurs when the ratio of Mn:Sc<2. It should further be noted that included in the composition in contrast to the known alloy of titanium contributes additionally to act as a modifier increased strength, because titanium can replace zirconium ternary Al-Sc-Zr phase, although the solubility of titanium is lower in comparison with zirconium.

As was set forth, scandium at least within certain limits, can be replaced with terbium or cerium. Note, however, that if such a change on the terbium to achieve the same properties as above, you want to introduce additives terbium more in comparison with replaceable scandium number.

Especially durable and corrosion-resistant alloy intended for use in construction in the species varies preferably in the range from 0.05 to 0.35 wt.%, however, such values in the case of using a mixture of lanthanides is specified in terms of the total amount of the mixture. In the alloy contains inevitable inclusion of silicon in an amount up to 0.2 wt.%, several aggravating mainly its dynamic properties.

1. With weldability corrosion-resistant aluminum-magnesium alloy, including a three-part aluminum-scandium-zirconium phase, which includes at least 3-5 wt.% magnesium (Mg), 0.05 to 0.15 wt.% zirconium (Zr), from 0.05 to 0.12 wt.% manganese (MT), 0.01 to 0.2 wt.% titanium (Ti), 0.05 to 0.5 wt.% one or more elements of the group consisting of scandium (Sc), terbium (b), cerium (CE) and other lanthanides, the composition contains at least scandium (Sc), and aluminum (Al) and inevitable inclusion of silicon (Si) in an amount of a maximum of 0.2 wt.%.

2. Aluminum-magnesium alloy under item 1, characterized in that the ratio between the amounts of manganese and scandium is less than two.

3. Aluminum-magnesium alloy under item 1 or 2, characterized in that the composition contains at least about 0.15 wt.% scandium (Sc).

4. Aluminum-magnesium alloy according to any one of paragraphs.1-3, characterized in that the composition contains from 0.05 to 0.35 wt.% one or more e the s (But) or erbium (Er).

5. Detail designed for air vehicles, primarily of the fuselage of the aircraft, sea vessel or vehicle, and produced by welding, rolling, extrusion or forging, characterized in that it is made of aluminum-magnesium alloy according to any one of paragraphs.1-4.

 

Same patents:
The invention relates to possessing weldability corrosion-resistant aluminum-magnesium alloy with a high content of magnesium, which as an important component part of a three-part aluminum-scandium-zirconium phase

The invention relates to the field of metallurgy, in particular to aluminum alloys of the aluminum-magnesium-silicon, including for the manufacture of solid semi-finished products obtained by pressing, rolling, punching, and can be used in industrial engineering, construction, automotive industry

The invention relates to the field of metallurgy, namely Al-Li alloys, low density, intended for use as structural materials in aerospace

The invention relates to the field of metallurgy, namely the Al-Mg-Si-Cu-alloys with improved corrosion resistance, designed for use as a structural material in transportation, including aviation

The invention relates to the field of metallurgy and can be used in the preparation of high alloy steels are used to produce products casting and pressure treatment
The invention relates to possessing weldability corrosion-resistant aluminum-magnesium alloy with a high content of magnesium, which as an important component part of a three-part aluminum-scandium-zirconium phase

The invention relates to the field of metallurgy of aluminum alloys

The invention relates to the field of soldering, in particular to the composition of solder products from ferrous metals and hard alloys, as well as to the method of manufacturing a solder

The invention relates to the field of metallurgy, in particular to the field of creation of welding wires based on aluminum for wear resistant surfacing, with the aim of strengthening the most loaded areas of the individual parts of modern machines and, in particular piston engines

The invention relates to brazing, in particular to the composition of the solder used for soldering of copper and its alloys, zinc, steel, and can be used for soldering radiators automotive

FIELD: soldering fuel assemblies of nuclear reactors, mainly manufacture of spacing grids made of tubular blanks.

SUBSTANCE: 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 %.

EFFECT: increased corrosion resistance and creep resistance, lowered melting temperature, reduced quantity of iron intermetallides in soldered joint.

2 cl, 1 tbl

FIELD: metallurgy; welding materials; welding alloys of Al-Mg, Al-Mg-Li and Al-Zn-Mg-Cu systems.

SUBSTANCE: proposed welding wire contains magnesium, zirconium, scandium, beryllium, boron, manganese, aluminum, neodymium and at least two elements from group containing terbium, tin and vanadium. Proposed wire possesses high resistance to exploitation corrosion and hot cracks in welded joints of Al-Mg, Al-Mg-Li and Al-Zn-Mg-Cu system.

EFFECT: enhanced corrosion resistance of welding wire.

2 tbl, 6 ex

FIELD: metallurgy, in particular solder for connection of heat hardenable aluminum alloys.

SUBSTANCE: claimed solder contains (mass %): silicon 4-12; germanium 4.6-25; strontium 0.003-0.01; cerium 0.05-0.15; and balance: aluminum. Additionally solder may contain 0.3-1.0 mass % of magnesium. Solder is obtained by ingot production, diffusion annealing at temperature being by 5-10°C higher than solidus temperature for 5-24 h and further cogging.

EFFECT: solder of decreased melting point; brazed constructions of increased strength.

4 cl, 1 ex

FIELD: sheet for soldering by means of brazing solder with corrosion resistance, method for making such articles.

SUBSTANCE: laminate sheet includes core made of 3xxx type alloy, gasket of aluminum alloy placed in one side of core and cladding of 4xxx type alloy for soldering by means of brazing solder placed on other side of gasket. After soldering sheet to part by means of brazing solder, continuous dense zone of Mn including dispersoids is formed in interface between core and gasket in the result of Si diffusion from cladding to core. Process for making such sheet comprises operations of producing composite including core of 3XXX alloy, cladding for soldering by means of brazing solder of 4XXX alloy and gasket of aluminum alloy placed between them; hot rolling of composite at temperature lower than 525°C for metallurgical joining of all components of composite together; cold rolling of composite till final size without subjecting it to heat treatment.

EFFECT: possibility for producing sheet suitable for any purpose having high corrosion resistance and moldability before soldering by means of brazing solder.

36 cl, 7 dwg, 7 tbl, 2 ex

FIELD: metallurgy.

SUBSTANCE: invention can be used for arc and plasma-jet hard-facing of wear-resistant layers on cars parts, operating in conditions of action of abrasive wear, impact loads, erosion at increased temperatures. Bars consist of cast compound materials on the basis of high-strength casting aluminium alloys, hardened by discrete high-modular, high-duty ceramic particles of silicon carbide (α-SiC) of hardness HV 1000. Amount of hardening particles in matrix alloy at its mid-size 28 or 40 mcm is 3-8 wt % or 3-10 wt %, respectively. Amount of silicon in matrix alloy is 7-12 wt %. Composite melt is poured by dimensions of bars for overlaying welding according to GOST 21449-75.

EFFECT: high strength and wearing capacity.

3 cl, 1 tbl, 2 dwg

FIELD: metallurgy.

SUBSTANCE: 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.

EFFECT: decreasing of problems at manufacturing and usage of solder alloy at manufacturing and expansion of manufacturing capabilities of application of particular solder alloy.

2 tbl

FIELD: metallurgy.

SUBSTANCE: 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.

EFFECT: decreasing of problems at manufacturing and application of particular solder alloy at manufacturing and expanding of manufacturing capabilities of application of particular solder alloy.

2 tbl

Up!