Armored deformable aluminum alloy

FIELD: metallurgy.

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.

 

The invention relates to metallurgy and can find application in the manufacture of armor pronenesses technology (body and elements of cars, vehicles and ships, etc. to protect from the effects of weapons.

Specific properties of the armor, determined by the operating conditions of the object of protection is the resistance of the material of the armor and its welded joints to the impact of bullets, shells of various calibers, min, fragments, etc. and combinability with other types of protection.

So to welded metal alloys used for the manufacture of armor, in addition to the General requirements for mechanical strength, resistance to General corrosion and stress corrosion, also meet the requirements breastaurant, survivability, etc. as the metal and welds.

Known deformable aluminum alloy containing the following components in wt.%: zinc 5,4-6,2; magnesium of 2.51 to 3.0; manganese 0.1 to 0.3; chrome 0.12 to 0.25; titanium 0,03-0,10; zirconium 0,07-0,12; beryllium is 0.0002-0,005; copper ≤0,2; iron ≤0,3; si ≤0,2; aluminum - rest (EN 2094517 C1, C23C 21/10, 1997).

Known alloy, hardened by quenching and ageing, has the following mechanical characteristics: σin=510-560 MPa, σof 0.2=450-490 MPa, δ=7-10%Andto=0,7-1 KGM/cm2. Known alloy is used in the production of cu is provability bulletini all-aluminium engineering facilities. However, welded constructions made of this alloy (angular and, especially, rectangular) have some tendency to stress corrosion, which in combination with the temperature-linear deformations of structures can lead to crack formation at the open ends of the corner welds. So in the long run, especially in terms of exposure to alternating loads, the durability of welded structures broncobuster and proneness mechanized objects made from this alloy can be reduced. In addition, armor made from this alloy does not provide a sufficient level of resistance when exposed to projectiles and cannot be used simultaneously with the active dynamic protection mechanized objects in the form of undermining blocks of explosives.

Known deformable aluminum alloy containing the following components in wt.%: zinc 4,7-5,3; magnesium 2,1-2,6; manganese 0.05 to 0.15; chrome 0.12 to 0.25; titanium 0,03-0,10; zirconium 0,07-0,12; beryllium is 0.0002-0,005; copper ≤0,2; iron ≤0,35; si ≤0,25; aluminum - rest (EN 2094516 C1, C23C 21/10, 1997).

Known alloy, hardened by quenching and ageing, has the following mechanical characteristics: σin=460-500 MPa, σof 0.2=370-440 MPa, δ=8-14%Andto=1,1-1,8 KGM/cm2. Known alloy is shock proof and use isoamsa in the production of large all-welded impact resistant engineering facilities. Armor made from this alloy, capable of providing a sufficient level of resistance when exposed to projectiles. However, for this alloy after deformation characteristic of a certain anisotropy of properties, which limits its use in combination with dynamic protection when exposed to powerful modern weapons armor.

The objective of the invention is the creation of armour wrought aluminium alloy, providing in combination with the dynamic protection bronekorpus and pronenesses equipment increase survivability armor when exposed to powerful modern weapons, as well as increasing the resistance of welded joints of armor to General corrosion and stress corrosion.

The technical result of the invention is to improve the uniformity of the structure of the armor and its welds, ensuring stable breasticle welds armor alloy according to the invention regardless of the location of the welded elements, excluding slit from the back side of the armor when saprobity projectile, providing high survivability, armor, including its use in combination with an external dynamic protection broncobuster and proneness mechanized objects.

The essence of the invention is that armour wrought aluminium alloy includes zinc, magnesium, manganese,chromium, titanium, zirconium, beryllium, iron, silicon, sodium, copper and aluminum in the following ratio, wt.%: zinc 4,7-5,3; magnesium 2,1-2,6; manganese 0.05 to 0.15; chrome 0.12 to 0.25; titanium 0,03-0,10; zirconium 0,07-0,12; beryllium is 0.0002-0,005; iron 0,05-0,35; silicon 0,05-0,25; sodium 0,0001-0,0008; copper not more than 0.2; aluminum - rest.

The content of sodium in the amount of 0.0001-0,0008 wt.% in armour alloy according to the invention while maintaining high mechanical characteristics helps to reduce the heterogeneity of the structure of the alloy after deformation and heat treatment in the form of lamination (sipernet), and helps to improve the isotropy of the material and the stress relaxation in the extended area of the weld.

Manufacturer armour alloy according to the invention includes obtaining the melt, his semi-continuous casting method in the mold slide or electromagnetic mould, cutting ingots to slabs, homogenization, milling, standard deformation forging, rolling or extrusion, heat treatment of workpieces and, if necessary, welding. The desired concentration of sodium in the alloy according to the invention is produced by maturation of the melt in the mixer submerged, such as cryolite. In the manufacture of forgings used III and IV schemes forging. Heat treatment of workpieces includes quenching and artificial ageing at a temperature of 100°for the of 24 hours, with aging includes additional exposure at a temperature of 165-175°C for 3-4 hours. Welding workpieces are standard technology. The design of the armor, including the long welded connection, in addition is maintained at a temperature of 165-175°C for 3-4 hours.

The performance characteristics of the armor of the alloy according to the invention was evaluated by the absence of stratification (sipernet) basic metal, metal heat-affected zone and weld weld joint after additional heating at a temperature of 165-175°C for 3-4 hours; the ratio of the isotropy of Kσ(%)characterizing the stability σinthe height of the pressed plates with respect to σinin length; on the characteristic of the survivability; winning by weight of armor plates of the alloy according to the invention compared with armor steel under the same conditions of firing projectiles (both solid and fin-stabilised discarding sabot), resistance to General corrosion and stress corrosion.

The mechanical characteristics of the alloy according to the invention after quenching and aging do not differ from the mechanical characteristics of the alloy prototype: σin=460-510 MPa, σof 0.2=370-430 MPa, δ=8-13%Andto=1,3-2,0 kgf/cm2. The molded structure armor (base metal, weld metal and heat affected zone) after deformation and thermo which the processing is homogeneous with no lamination. Values of Kσwas 94-98%. The results of the fire showed good persistence of both the armor plates of the alloy according to the invention, and welded joints, no back bruised when saprobity, and depending on the angle of fire 17-40%winning weight compared to steel armor. Standard corrosion tests (including sea water) for resistance to General corrosion and stress corrosion at a load of 0.9 σof 0.2showed the absence of intergranular corrosion and cracking in the welded area and okolozubnoy zone.

The presented results demonstrate the achievement of the technical result and the use of the alloy according to the invention in the manufacture of armor for bronekorpus and pronenesses techniques in combination with active dynamic protection.

Armour wrought aluminum alloy comprising zinc, magnesium, manganese, chromium, titanium, zirconium, beryllium, iron, silicon, copper and aluminum, characterized in that it additionally contains sodium in the following ratio, wt.%:

zinc4,7-5,3
magnesium2,1-2,6
manganese0,05-0,15
chrome0,12-0,25
titanium0,03-0,10/td>
Zirconia0,07-0,12
berylliumis 0.0002-0,005
iron0,05-0,35
silicon0,05-0,25
sodium0,0001-0,0008
coppernot more than 0.2
aluminumrest



 

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1 tbl

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FIELD: metallurgy.

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EFFECT: enhanced corrosion protection.

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FIELD: metallurgy.

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EFFECT: enhanced corrosion protection.

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Aluminum-base alloy // 2280092

FIELD: metallurgy.

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EFFECT: improved and valuable properties of alloy.

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2 tbl, 1 ex

FIELD: metallurgy.

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EFFECT: improved and valuable properties of alloy.

1 tbl

FIELD: metallurgy.

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EFFECT: improved and valuable technical properties of alloy.

FIELD: metallurgy.

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.

FIELD: metallurgy.

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

Aluminum-base alloy // 2319762

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.

1 tbl

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