The invention relates to a product made of an aluminium-based alloy comprising, by wt. %, Cu: 2.4-3.2; Li: 1.6-2.3; Mg: 0.3-0.9; Mn: 0.2-0.6; Zr: 0.12-0.18; such that Zr≥−0.06*Li+0.242; Zn:<1.0; Ag:<0.15; Fe+Si≤0.20; optionally, at least one element selected from Ti, Sc, Cr, Hf and V, the content of the element, if selected, being: Ti: 0.01-0.1; Sc: 0.01-0.15; Cr: 0.01-0.3; Hf: 0.01-0.5; V: 0.01-0.3; other elements ≤0.05 each and ≤0.15 in total; the remainder being aluminium. The invention also relates to a method for manufacturing an as-cast aluminum alloy product according to the invention, comprising the following steps: preparing a liquid metal bath; casting an as-cast shape from said liquid metal bath; and solidifying the as-cast shape into a billet, a rolling plate or a forging blank; characterised in that the casting is performed without adding any grain refiner, or by adding a refiner comprising (i) Ti and (ii) B or C, such that the content of B from the refiner is less than 45 ppm, and that of C is less than 6 ppm, and/or characterised in that the casting is carried out, for an as-cast shape of thickness E or with a diameter D greater than 150 mm, at a casting rate v (mm/min) greater than 30 for a plate-type as-cast shape or 9000/D for a billet-type as-cast shape.

The invention relates to a product made of an aluminium-based alloy comprising, by wt. %, Cu: 2.4-3.2; Li: 1.6-2.3; Mg: 0.3-0.9; Mn: 0.2-0.6; Zr: 0.12-0.18; such that Zr≥−0.06*Li+0.242; Zn:<1.0; Ag:<0.15; Fe+Si≤0.20; optionally, at least one element selected from Ti, Sc, Cr, Hf and V, the content of the element, if selected, being: Ti: 0.01-0.1; Sc: 0.01-0.15; Cr: 0.01-0.3; Hf: 0.01-0.5; V: 0.01-0.3; other elements ≤0.05 each and ≤0.15 in total; the remainder being aluminium. The invention also relates to a method for manufacturing an as-cast aluminum alloy product according to the invention, comprising the following steps: preparing a liquid metal bath; casting an as-cast shape from said liquid metal bath; and solidifying the as-cast shape into a billet, a rolling plate or a forging blank; characterised in that the casting is performed without adding any grain refiner, or by adding a refiner comprising (i) Ti and (ii) B or C, such that the content of B from the refiner is less than 45 ppm, and that of C is less than 6 ppm, and/or characterised in that the casting is carried out, for an as-cast shape of thickness E or with a diameter D greater than 150 mm, at a casting rate v (mm/min) greater than 30 for a plate-type as-cast shape or 9000/D for a billet-type as-cast shape.

The invention relates to the use of a wrought aluminum alloy in a T8 temper with the following composition, in wt %, Cu: 3.6-4.4; Mg: 1.2-1.4; Mn: 0.5-0.8; Zr:≤0.15; Ti: 0.01-0.15; Si≤0.20; Fe≤0.20; Zn≤0.25 other elements<0.05; the remainder being aluminum, in an application in which the product is kept at temperatures of between 80° C. and 250° C. for a significant period of at least 200 hours. The products intended for the use according to the invention are particularly useful in an application such as a rotor or another component of an air suction pump such as, in particular, a vacuum pump.

The invention relates to the use of a wrought aluminum alloy in a T8 temper with the following composition, in wt %, Cu: 3.6-4.4; Mg: 1.2-1.4; Mn: 0.5-0.8; Zr:≤0.15; Ti: 0.01-0.15; Si≤0.20; Fe≤0.20; Zn≤0.25 other elements<0.05; the remainder being aluminum, in an application in which the product is kept at temperatures of between 80° C. and 250° C. for a significant period of at least 200 hours. The products intended for the use according to the invention are particularly useful in an application such as a rotor or another component of an air suction pump such as, in particular, a vacuum pump.

A flat steel product for hot forming may be produced from a steel substrate that includes a steel comprising 0.1-3% by weight Mn and up to 0.01% by weight B, along with a protective coating that is applied to the steel substrate. The protective coating may be based on Al and may contain up to 20% by weight of other alloy elements. Also disclosed are methods for producing such flat steel products, steel components, and methods for producing steel components. Absorption of hydrogen is minimized during heating necessary for hot forming. This is achieved at least in part through an alloy constituent of 0.1-0.5% by weight of at least one alkaline earth or transition metal in the protective coating, wherein an oxide of the alkaline earth or transition metal is formed on an outer surface of the protective coating during hot forming of the flat steel product.

A flat steel product for hot forming may be produced from a steel substrate that includes a steel comprising 0.1-3% by weight Mn and up to 0.01% by weight B, along with a protective coating that is applied to the steel substrate. The protective coating may be based on Al and may contain up to 20% by weight of other alloy elements. Also disclosed are methods for producing such flat steel products, steel components, and methods for producing steel components. Absorption of hydrogen is minimized during heating necessary for hot forming. This is achieved at least in part through an alloy constituent of 0.1-0.5% by weight of at least one alkaline earth or transition metal in the protective coating, wherein an oxide of the alkaline earth or transition metal is formed on an outer surface of the protective coating during hot forming of the flat steel product.

The invention concerns a method for producing a 6xxx series aluminium sheet comprising the steps of homogenizing an ingot made from a 6XXX series aluminum alloy; cooling the homogenized ingot with a cooling rate in a range of from 150° C./h to 2000° C./h directly to the hot rolling starting temperature; hot rolling the ingot to a hot rolling final thickness and coiling at the hot rolling final thickness with such conditions that at least 50% recrystallization is obtained; cold rolling to obtain a cold rolled sheet. The method of the invention is particularly helpful to make sheets for the automotive industry which combine high tensile yield strength and good formability properties suitable for cold stamping operations, as well as high surface quality and high corrosion resistance with a high productivity.

The invention concerns a method for producing a 6xxx series aluminium sheet comprising the steps of homogenizing an ingot made from a 6XXX series aluminum alloy; cooling the homogenized ingot with a cooling rate in a range of from 150° C./h to 2000° C./h directly to the hot rolling starting temperature; hot rolling the ingot to a hot rolling final thickness and coiling at the hot rolling final thickness with such conditions that at least 50% recrystallization is obtained; cold rolling to obtain a cold rolled sheet. The method of the invention is particularly helpful to make sheets for the automotive industry which combine high tensile yield strength and good formability properties suitable for cold stamping operations, as well as high surface quality and high corrosion resistance with a high productivity.

The present invention is applicable to the technical field of material processing and provides an aluminum alloy and a preparation method thereof. The preparation method of the aluminum alloy includes: weighing raw material components according to a preset weight ratio; melting the weighed raw materials, sequentially performing refinement, standing, slag removal, degassing and filtering, and then performing horizontal casting to obtain an aluminum alloy ingot; homogenizing the ingot; heating the ingot to 440-500° C., and placing the ingot in an extruder with an extrusion ratio of 30-100 for extrusion treatment; annealing the extruded blank; heating the annealed blank to 440-480° C. for deformation treatment, and controlling the deformation amount in the thickness direction to be 12%-28%; carrying out solution treatment on the deformed blank; and subjecting the blank after the solution treatment to artificial aging treatment.

This disclosure relates to the field of metallurgy, namely, to the composition of an aluminum-based heat-resistant alloy and a powder from it to be used for the production of parts using additive technologies. A new aluminum-based material has been created, which is intended for producing a powder and its utilisation in the additive production of various products, which has high processability at laser melting and high strength characteristics in the heat-treated state: the yield strength exceeding 400 MPa, the ultimate strength exceeding 470 MPa, and elongation at break of at least 4%. The powdered aluminum material contains copper, magnesium, manganese, cerium, silicon, zirconium and/or titanium, where the material contains thermally stable Al.sub.8Cu.sub.4Ce dispersoids with a size of less than 1 μm, which are formed at crystallisation rates of at least 10.sup.3 K/s, which contribute to the material strengthening under operating conditions at room and elevated temperatures.