Provided are new aluminum alloys for use as one or more cladding layer(s) in clad aluminum alloy products for brazing applications. The cladding layer(s) include constituents that break and remove the oxide film on metal parts to be joined to produce high-strength brazing joints without the use of corrosive flux. Also provided herein are corrosion-resistant aluminum sheet packages including one or more of the aluminum alloy cladding layer(s) and an aluminum alloy core.

Disclosed are a method of manufacturing an aluminum-based clad heat sink, and an aluminum-based clad heat sink manufactured by the method. The method includes ball-milling (i) aluminum or aluminum alloy powder and (ii) carbon nanotubes (CNT) to prepare a composite powder, preparing a multi-layered billet using the composite billet, and directly extruding the multi-layered billet using an extrusion die to produce a heat sink. The method has an advantage of producing a light high-strength high-conductivity aluminum-based clad heat sink having an competitive advantage in terms of price by using direct extrusion that is suitable for mass production due to its simplicity in process procedure and equipment required.

A brazing-sheet manufacturing method includes superposing a core-material slab on or adjacent to at least one surface of a filler-material slab to form a clad slab, the core-material slab being composed of an aluminum material and the filler-material slab being composed of an Al—Si—Mg series alloy. Then, the clad slab is hot rolled to form a clad sheet having a core material layer composed of the aluminum material of the core-material slab and a filler material layer composed of the Al—Si—Mg series alloy of the filler-material slab. Then, the clad sheet is subjected to one or more passes of cold rolling. Either between cold-rolling passes or after the completion of the cold rolling, a surface of the clad sheet is etched using a liquid etchant that includes one or more inorganic acids. The liquid etchant does not contain fluorine atoms.

The present invention relates to a process for the production of an aluminium multilayer brazing sheet which comprises a core layer made of a 3xxx alloy comprising 0.1 to 0.25 wt. % Mg, a brazing layer made of a 4xxx alloy on one or both sides of the core layer, and optionally an interlayer between the core layer and the brazing layer on one or both sides of the core layer, the process comprising the successive steps of: providing the layers to be assembled or simultaneous casting of the layers to obtain a sandwich; rolling of the resulting sandwich to obtain a sheet; and treating the surface of the sheet with an alkaline or acidic etchant.

An embodiment of the present invention provides a steel sheet for hot press, including carbon (C) in an amount of 0.03 to 0.15 wt%, silicon (Si) in an amount of 0.1 to 1.5 wt%, manganese (Mn) in an amount of 1.0 to 2.0 wt%, phosphorus (P) in an amount of 0.1 wt% or less, sulfur (S) in an amount of 0.01 wt% or less, boron (B) in an amount of 0.0005 to 0.005 wt%, a sum of one or more of titanium (Ti), niobium (Nb), and vanadium (V) in an amount of 0.01 to 1.0 wt%, chromium (Cr) in an amount of 0.01 to 0.5 wt%, the balance of iron (Fe), and other unavoidable impurities. The steel sheet for hot press includes MnS-based inclusions, and an area fraction of the MnS-based inclusions is 5 % or less.

[Problem] A metal-fiber reinforced resin material composite is provided which improves the shear strength between a metallic member and a fiber reinforced material by more strongly bonding the metallic member and the fiber reinforced resin member, and which is very light and has excellent workability while increasing strength. [Solution] This metal-fiber reinforced resin material composite is provided with a metallic member and with a fiber reinforced resin material that is stacked on at least one surface of the metallic member and combined with the metallic member, wherein the fiber reinforced resin material comprises a matrix resin containing a thermoplastic resin, a reinforcing fiber material included in the matrix resin, and a resin layer interposed between the reinforcing fiber material and the metallic member and comprising a resin of the same type as the matrix resin. The shear strength of the metallic member and the fiber reinforced resin material is greater than or equal to 0.8 MPa.

A multilayered, flexible, and generally flat pouch for transporting and dispensing chocolate, including first and second elongated generally rectangular multilayered portions sealed together to yield a deformable generally rectangular fluid-tight sachet defining an internal volume and separating the internal volume from an external environment. The sachet further defines a top end, an oppositely disposed bottom end, and first and second sides extending therebetween. An untempered chocolate portion is contained within the internal volume. A tear notch is formed through at least one side and disposed adjacent the top end and a weakened tear strip extends between the second side and the bottom end. The sachet is substantially fluid-tight, and first and second elongated generally rectangular multilayered portions each further comprise an outer layer, an inner high-slip layer, a printable binding layer disposed between the inner and outer layers, and a metal vapor barrier layer disposed between the inner and outer layers. When actuated, the first weakened tear strip produces a corner pour spout through which molten chocolate may be extracted from the sachet. When actuated, the second weakened tear strip produces a central aperture through which molten chocolate may be extracted from the sachet.

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.

A composite structure with an aluminum-based alloy layer containing boron carbide and a manufacturing method thereof are provided. The composite structure includes a substrate with an open hole in that surface and the aluminum-based alloy layer containing boron carbide. The aluminum-based alloy layer is disposed in the open hole and contains aluminum, boron, carbon, and oxygen, wherein the content of aluminum is between 4 at. % and 55 at. %, the content of boron is between 9 at. % and 32 at. %, the content of carbon is between 13 at. % and 32 at. %, the content of oxygen is between 2 at. % and 38 at. %, and the ratio of the content of boron to carbon is between 0.3 and 2.7.

An electrical connecting structure (10) for use as a means for transmitting electrical energy between a first electrical component and a second electrical component, wherein the connecting structure (10) is formed from a number of layers (20, 30, 40, 50) arranged serially with one another, a first outer layer (20) consisting of aluminum or an aluminum alloy and a second outer layer (50) preferably consisting of aluminum or an aluminum alloy, and a third and preferably fourth layer (30, 40), specifically one or two inner layers, being provided between the outer layers (20, 50), the inner layer or inner layers (30, 40) being respectively produced by cold gas spraying.