A thixomolding material includes: a metal body containing magnesium(Mg) as a primary component; a plurality of coating particles provided at a front surface of the metal body and having an average particle diameter equal to or less than 100 μm, the plurality of coating particles being made of an inorganic material differing from the metal body; and an interposed particle interposed between the metal body and the coating particles and having an average particle diameter smaller than the coating particle, the interposed particle being made of an inorganic oxide.

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.

A method for the practice-oriented, operationally reliable production of castings of an AlCu alloy which consists of Cu, Mn, Zr, Fe, Si, Ti, V, remainder Al and unavoidable impurities. A melt which has been melted according to this alloy formula is kept at temperature for several hours and then mixed vigorously at least once. Thereafter, the melt is cast in portions into the respective casting which is then solution annealed at temperature for several hours. The casting is quenched from the solution anneal temperature to a maximum temperature of 300° C., at a specified cooling rate which the casting passes through during quenching. The casting is then artificially aged for several hours at 150-300° C. Finally, the casting is cooled to room temperature.

Aluminum alloy components having improved properties. In one form, the cast alloy component may include about 0.6 to about 14.5 wt % silicon, 0 to about 0.7 wt % iron, about 1.8 about 4.3 wt % copper, 0 to about 1.22 wt % manganese, about 0.2 to about 0.5 wt % magnesium, 0 to about 1.2 wt % zinc, 0 to about 3.25 wt % nickel, 0 to about 0.3 wt % chromium, 0 to about 0.5 wt % tin, about 0.0001 to about 0.4 wt % titanium, about 0.002 to about 0.07 wt % boron, about 0.001 to about 0.07 wt % zirconium, about 0.001 to about 0.14 wt % vanadium, 0 to about 0.67 wt % lanthanum, and the balance predominantly aluminum plus any remainders. Further, the weight ratio of Mn/Fe is between about 0.5 and about 3.5. Methods of making cast aluminum parts are also described.

A castable, moldable, or extrudable magnesium-based alloy that includes one or more insoluble additives. The insoluble additives can be used to enhance the mechanical properties of the structure, such as ductility and/or tensile strength. The final structure can be enhanced by heat treatment, as well as deformation processing such as extrusion, forging, or rolling, to further improve the strength of the final structure as compared to the non-enhanced structure. The magnesium-based composite has improved thermal and mechanical properties by the modification of grain boundary properties through the addition of insoluble nanoparticles to the magnesium alloys. The magnesium-based composite can have a thermal conductivity that is greater than 180 W/m-K, and/or ductility exceeding 15-20% elongation to failure.

A negative electrode active material includes a silicon-based alloy represented by Si-M.sub.1-M.sub.2-C—B, wherein M.sub.1 and M.sub.2 are different from each other and are each independently selected from magnesium, aluminum, titanium, vanadium, chromium, iron, cobalt, nickel, copper, zinc, gallium, germanium, manganese, yttrium, zirconium, niobium, molybdenum, silver, tin, tantalum, and tungsten. In the silicon-based alloy, Si is in a range of about 50 at % to about 90 at %, M.sub.1 is in a range of about 10 at % to about 50 atom %, and M.sub.2 is in a range of 0 at % to about 10 at %, based on a total number of Si, M.sub.1, and M.sub.2 atoms. C is in a range of about 0.01 to about 30 parts by weight, and B is in a range of 0 to about 5 parts by weight, based on a total of 100 parts by weight of Si, M.sub.1, and M.sub.2.

A method includes moving a first part along a movement path. The method also includes introducing drops of a liquid metal onto the first part using a three-dimensional (3D) printer. The drops of the liquid metal solidify to form a second part that is joined to the first part. The method also includes mechanically joining the second part to a third part.

The subject of the invention is a process for the production of at least partly thin-walled and aluminium castings with sand moulding technology by gravity casting, which allows producing casts with 100 times or favourably 200-400 times larger overall dimensions in case of 1-3 mm wall thickness. The main idea of the process is that sand mould containing mould cavity is provided, melt of aluminium content is produced, the melt is introduced into the mould cavity at several points through a gating system of narrowing cross section. A further subject of the invention is a sand mould fitted with a gating system to produce at least partly thin-walled castings with sand moulding technology, by gravity casting. The wall thickness of thin-walled segments is 1-3 mm and the largest dimension is more than a 100 but favourably at least 200-400 multiple of the wall thickness. The main idea behind the sand mould with a gating system is that it contains a mould cavity allowing the production of at least partly thin-walled castings, and is equipped with a gating system, which is composed of at least two sprues and one ingate to each having a porthole into the mould cavity and in liquid contact with the sprues.

An Aluminum-Silicon casting alloy for use in high temperature service conditions. The alloy composition includes, by weight percentage, from about 5.00% to about 17.00% Silicon (Si), from about 0.00% to about 0.90% Iron (Fe), from about 0.00% to about 1.00% Manganese (Mn); from about 0.000% to about 0.018% Strontium (Sr), from about 0.00% to about 2.00% Copper (Cu), from about 0.00% to about 0.50% Magnesium (Mg), from about 0.00% to about 0.05% Zinc (Zn), from about 0.01% to about 0.10% Boron (B); and a balance of Aluminum (Al).

In various embodiments, aluminum alloys having yield strengths greater than 120 MPa, and typically in the range from 140 MPa to 175 MPa, are described. Further, such alloys can have electrical conductivity of greater than 45% IACS, typically in the range from 45-55% IACS. In one embodiment, the aluminum alloy comprises Si from 1 to 4.5 wt %, Mg from 0.3 to 0.5 wt %, TiB.sub.2 from 0.02 to 0.07 wt %, Fe less than 0.1 wt %, Zn less than 0.01 wt %, Cu less than 0.01 wt %, Mn less than 0.01 wt %, the remaining wt % being Al and incidental impurities. Such alloys can be used to cast a variety of automotive parts, including rotors, stators, busbars, inverters, and other parts.