The invention relates to a rolled composite aerospace product comprising a 2XXX-series core layer and a 6XXX-series aluminium alloy clad layer coupled to at least one surface of the 2XXX-series core layer, wherein the 6XXX-series aluminium alloy comprises, in wt. %, Si 0.3% to 1.0%, Mg 0.3% to 1.1%, Mn 0.04% to 1.0%, Fe 0.03% to 0.4%, Cu up to 0.10%, Cr up to 0.25%, V up to 0.2%, Zr up to 0.2%, Zn up to 0.5%, Ti up to 0.15%, unavoidable impurities each <0.05%, total <0.15%, balance aluminium. The invention further relates to a method of manufacturing such a rolled composite aerospace product.

The invention relates to a rolled composite aerospace product comprising a 2XXX-series core layer and an Al—Mg alloy clad layer coupled to at least one surface of the 2XXX-series core layer, wherein the Al—Mg alloy is a 5XXX-series aluminium alloy comprising 0.4% to 4.8% Mg, and preferably 0.7% to 4.5% Mg.

The invention relates to a rolled composite aerospace product comprising a 2XXX-series core layer and an Al—Mg alloy clad layer coupled to at least one surface of the 2XXX-series core layer, wherein the Al—Mg alloy is a 5XXX-series aluminium alloy comprising 0.4% to 4.8% Mg, and preferably 0.7% to 4.5% Mg.

The present invention relates to pulverulent aluminium alloys having Cu, Zn or Si/Mg as the most relevant alloying element, the alloy further having a content of 1 to 15 wt. % of metals selected from the group M1 comprising Mo, Nb, Zr, Fe, Ti, Ta, V, and lanthanides. Such aluminium alloys can be used in additive manufacturing processes such as selective laser melting for the production of high-strength and hot-crack-free three-dimensional objects. The present invention further relates to methods and devices for producing three-dimensional objects from such aluminium alloys, methods for producing such pulverulent aluminium alloys, three-dimensional objects also produced from such pulverulent aluminium alloys, and specific aluminium alloys.

The present invention relates to pulverulent aluminium alloys having Cu, Zn or Si/Mg as the most relevant alloying element, the alloy further having a content of 1 to 15 wt. % of metals selected from the group M1 comprising Mo, Nb, Zr, Fe, Ti, Ta, V, and lanthanides. Such aluminium alloys can be used in additive manufacturing processes such as selective laser melting for the production of high-strength and hot-crack-free three-dimensional objects. The present invention further relates to methods and devices for producing three-dimensional objects from such aluminium alloys, methods for producing such pulverulent aluminium alloys, three-dimensional objects also produced from such pulverulent aluminium alloys, and specific aluminium alloys.

An aluminum-lithium alloy with low density, high strength, and high elastic modulus and its production method are provided. A chemical composition of the aluminum-lithium alloy with low density, high strength, and high elastic modulus by weight is: Cu 1.5-4.5 wt %, Li 2.4-3.8 wt %, Mg 0.5-2.0 wt %, Zn 0.5-1.0 wt %, Ag 0.3-0.8 wt %, Er 0.05-0.3 wt %, Zr 0.05-0.25 wt %, Fe≤0.08 wt %, Si≤0.05 wt %, and the balance is Al and inevitable impurities. The production method includes: preparing raw materials, drying, adjusting pressure of an electromagnetic-induction furnace, melting in a vacuum induction furnace, power adjustment, casting, heat treatment, cooling. Degassing and slag removals are avoided, and defects of aluminum-lithium alloy during production are reduced.

An aluminum-lithium alloy with low density, high strength, and high elastic modulus and its production method are provided. A chemical composition of the aluminum-lithium alloy with low density, high strength, and high elastic modulus by weight is: Cu 1.5-4.5 wt %, Li 2.4-3.8 wt %, Mg 0.5-2.0 wt %, Zn 0.5-1.0 wt %, Ag 0.3-0.8 wt %, Er 0.05-0.3 wt %, Zr 0.05-0.25 wt %, Fe≤0.08 wt %, Si≤0.05 wt %, and the balance is Al and inevitable impurities. The production method includes: preparing raw materials, drying, adjusting pressure of an electromagnetic-induction furnace, melting in a vacuum induction furnace, power adjustment, casting, heat treatment, cooling. Degassing and slag removals are avoided, and defects of aluminum-lithium alloy during production are reduced.

An aluminum alloy forging includes 0.30 mass % or more and 1.0 mass % or less of Cu; 0.63 mass % or more and 1.30 mass % or less of Mg; 0.45 mass % or more and 1.45 mass % or less of Si; the balance being Al and inevitable impurities, wherein the following relations are satisfied,

[Mg content]×1.587≥−4.1×[Cu content].sup.2+7.8×[Cu content]−1.9  (1)

[Si content]×2.730≥−4.1×[Cu content].sup.2+7.8×[Cu content]−1.9  (2)

and the ratio of the integrated intensity Q1 of the X-ray diffraction peak of the CuAl.sub.2 phase to the integrated intensity Q2 of the X-ray diffraction peak of the (200) plane of the Al phase obtained by the X-ray diffraction method, Q1/Q2, is 2×10.sup.−1 or less.

The present invention relates to techniques for producing 2024 and 7075 aluminum alloys by recycling waste aircraft aluminum alloys, which belong to technical fields for circular economy. The present invention develops techniques for obtaining the 2024 and 7075 aluminum alloys by subjecting waste aircraft aluminum alloys as raw materials to pretreatment, smelting, impurity removal, melt ingredient assay, ingredient adjustment, refining, and casting. Through utilizing the waste package aluminum alloys and the waste aluminum pop-top cans to adjust the ingredients, the waste aircraft aluminum alloys would be recycled at a lower cost without downgrading. The present invention has some advantages, such as low cost, and applicability for industrial production, as well as prominent economic benefit.

An apparatus, material and method for forming a brazing sheet has a high strength core bonded with corrosion protection layer on the coolant side and/or layers on both airside and coolant side. The material enables heat exchanger components, such as tube, header, plate, etc., for applications, such as automotive heat exchangers, that require high fatigue life as well as high service life in a corrosive environment.