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Aluminum-based alloy

An aluminum alloy and alloy technology, applied in the field of products working at high temperature and low temperature, can solve the problems of insufficient high temperature heating tolerance and low strength performance level of semi-finished products

Pending Publication Date: 2021-10-15
OBSHCHESTVO S OGRANICHENNOY OTVETSTVENNOSTYU OBEDINENNAYA KOMPANIYA RUSAL INZHENERNO TEKHNOLOGICHESKIY TSENTR
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Problems solved by technology

[0004] The main disadvantage of the 5xxx series alloys is the low level of strength properties of the forged semi-finished products in the annealed state; for example, the yield strength of the 5083 type alloy after annealing usually does not exceed 150MPa (see "Industrial Aluminum Alloys: Reference Book"
Among the disadvantages of this material, it should be noted the presence of rare and expensive elements
In addition, the material is not sufficiently resistant to high temperature heating during process heating

Method used

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Embodiment Construction

[0032] Eight alloys were prepared under laboratory conditions, and their chemical compositions are shown in Table 1.

[0033] Numbering Mg mn Fe Cr Zr Ti V sc Si Al 1 3.8 0.2 0.01 0.01 0.03 0.01 - - 0.25 margin 2 4.0 1.0 0.08 0.18 0.06 0.15 0.02 0.28 0.18 margin 3 4.1 0.5 0.15 0.10 0.16 0.02 - 0.01 0.09 margin 4 5.0 0.6 0.15 0.13 0.10 0.08 - 0.10 0.11 margin 5 5.1 0.5 0.16 0.12 0.16 05 0.04 - 0.10 margin 6 5.1 0.5 0.25 0.12 0.08 0.08 0.06 0.06 0.08 margin 7 5.5 0.6 0.15 0.08 0.10 0.09 - 0.10 0.10 margin 8 5.8 1.1 0.27 0.19 0.18 0.17 - 0.31 0.07 margin

[0034] Table 1: Chemical composition (wt%) of experimental alloys

[0035] The alloy is prepared in a laboratory induction furnace and each casting has a mass of at least 14kg. The following materials are used as charge (weight %): aluminum A99 (99.99% of Al), magnesium Mg90 (99.90...

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Abstract

The invention relates to the field of the metallurgy of aluminium-based materials and can be used in the manufacture of articles for work in corrosive environments under the weight of heavy loads, including in elevated and cryogenic temperatures. Proposed is a new aluminium alloy having a structure consisting of an aluminium solution, secondary separations and a eutectic phase, formed by elements such as magnesium, manganese, iron, chromium, zirconium, titanium and vanadium. The alloy additionally contains silicon and scandium, an at least 75% share of each element from the group consisting of zirconium and scandium forming the secondary separations with an L12-type lattice in an amount of at least 0.18 vol.% and a particle size of no more than 20 nm, for a given alloying element redistribution.

Description

technical field [0001] The invention relates to the field of metallurgy of aluminum-based materials, which can be used to manufacture products (including welded structures) that work under high loads in corrosive environments (humid atmosphere, fresh water, sea water, etc.), especially at high and low temperatures. The material can be produced in the form of rolled products such as slabs, plates and rolled plates, extruded profiles and tubes, forgings, other forged semi-finished products, and in the form of powder, flakes, pellets, etc. [0002] The proposed alloys are used primarily in vehicles, such as hulls, hull components of ships and other vessels, as well as cladding and other loading components of aircraft, trucks and rail tank cars, especially for the transport of chemically active substances, and in the food industry, etc. used in . Background technique [0003] Due to their high corrosion resistance, weldability, high elongation values ​​and their ability to work...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/06
CPCC22C21/08C22F1/047C22C1/03C22C1/026C22C21/06
Inventor V·K`Y·曼恩A·N·阿拉宾A·P·赫若莫S·V·维尔查克A·Y`E·克拉克金D·O·福金R·O·瓦卡若木P·O·约俄
Owner OBSHCHESTVO S OGRANICHENNOY OTVETSTVENNOSTYU OBEDINENNAYA KOMPANIYA RUSAL INZHENERNO TEKHNOLOGICHESKIY TSENTR
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