New aluminum casting alloys having 8.5-9.5 wt. % silicon, 0.8-2.0 wt. % copper (Cu), 0.20-0.53 wt. % magnesium (Mg), and 0.35 to 0.8 wt. % manganese are disclosed. The alloy may be solution heat treated, treated in accordance with T5 tempering and/or artificially aged to produce castings, e.g., for cylinder heads and engine blocks. In one embodiment, the castings are made by high pressure die casting.

Method for the manufacturing of products with anodized high gloss surfaces from extruded profiles of AlMgSi or AS-MgSiCu, where the alloys initially are cast to extrusion billets), containing in wt. % Si: 0.25-1.00 Mg. 0.25-1.00 Fe: 0.00-0.15 Cu: 0.00-0.30 Mn: 0.00-0.20 Cr: 0.00-0.10 Zr: 0.00-0.10 Se: 0.00 -0.10 Zn: 0.00-0.10 Ti: 0.00-0.05., and including incidental impurities and balance A.L a) where the billet is homogenised at a holding temperature between 480 C. and 620 C. and soaked at this temperature for 0-12 hours, where after the billet is subjected to cooling from the homogenisation temperature at a rate of 150 C./h or faster, b) the billet is preheated to a temperature between 400 and 540 C. and extruded preferably to a solid shape profile and cooled rapidly down to room temperature, c) optionally artificially ageing the profile, d) deforming the profile more than 10% by a cold roiling operation, whereafter e) the profile is flash annealed with a healing time of maximum two minutes to a temperature of between 450-530 C. for not more than 5 minutes and subsequently quenched, and f) optionally the profile after flash annealing is further subjected to a cold deforming operation to remove residual stresses from cooling and adjusting dimensional tolerances, and g) the profile is finally aged.

A heat exchanger aluminum alloy fin material, comprising Si 0.5 to 1.5 mass %; Fe 0.1 to 1.0 mass %; Mn 0.8 to 2.2 mass %; Zn 0.4 to 2.5 mass %; and further at least one selected from Cu, Ti, Zr, Cr, and V each in 0.02 to 0.3 mass %, with the balance being Al and unavoidable impurities, wherein a metallographic microstructure before braze-heating is such that a density of second phase particles having a circle-equivalent diameter of less than 0.1 m is less than 110.sup.7 particles/mm.sup.2, and that a density of second phase particles having a circle-equivalent diameter of 0.1 m or more is 510.sup.4 particles/mm.sup.2 or more, wherein a tensile strength before braze-heating, TS.sub.B, a tensile strength after braze-heating, TS.sub.A, and a sheet thickness of the fin material, t, satisfy: 0.4(TS.sub.BTS.sub.A)/t2.1, and wherein the sheet thickness is 150 m or less.

Magnesium alloys are disclosed for diecasting with reduced defects comprising aluminum in an amount greater than or equal to about 10 wt % and less than and equal to about 15 wt %; zinc in an amount greater than 0 and less than or equal to about 0.5 wt %; silicon in an amount greater than 0 and less than or equal to about 1.5 wt %; and the balance being magnesium and unavoidable impurities. Magnesium parts diecast from these magnesium alloys are also disclosed.

Disclosed herein are embodiments of rapidly solidified alloys that comprise aluminum, a rare earth element, one or more additional alloying elements, such as aluminum, and an optional additive component. The alloy embodiments exhibit a unique microstructure as compared to microstructures obtained from other alloys that are not rapidly cooled. The disclosed aluminum-rare earth element alloys also exhibit improved mechanical properties without the need for post-processing heat treatments and further do not exhibit substantial coarsening.

The application discloses a preparation method for an aluminum alloy cavity casting filled with special-shaped foamed aluminum. The preparation method includes: preparing special-shaped foamed aluminum in a first mold by adopting a powder metallurgy foaming method; fixing the special-shaped foamed aluminum coated with the soldering flux in a second mold after the special-shaped foamed aluminum is coated with soldering flux; and casting by using molten aluminum alloy. According to the preparation method for the aluminum alloy cavity casting filled with the special-shaped foamed aluminum, the overall strength of the casting can be improved while the wall thickness of the casting is reduced to meet the requirement that the overall quality of the casting is not increased.

According to the method for manufacturing a soluble core for high pressure casting, the method for manufacturing a core by dispersing a heat-resistant hard ceramic powder in a water-soluble chemical salt having a melting point 140 C. to 260 C. lower than a melting point of a cast metal and a heat capacity of 90 J/(mol.Math.K) or more is a very useful technology that can easily manufacture a core for high pressure casting of metals such as aluminum and magnesium, and a method for extracting a core from casting can also be simply performed by heating and extracting the core at a temperature equal to or lower than the melting point of the cast metal, and since the core material can be recycled, it is very advantageous in terms of productivity and economy.

A lightweight magnesium alloy with excellent mechanical properties is provided by an industrially stable process. A magnesium-lithium-aluminum based alloy contains magnesium, lithium of 2 to 6.0 mass %, and aluminum of 5 to 10 mass %. A method of manufacturing the above-described magnesium-lithium-aluminum based alloy and a method of manufacturing a molded product by injection-molding the magnesium-lithium-aluminum based alloy provided by the manufacturing method are to prepare two types of raw material chips containing predetermined elements, and to mix them.

A method for manufacturing graphene aluminum casting where special sand boxes are used together with vacuum evacuation to harden dry sand between two pieces of EVA film, thereby producing an upper mold box and a lower mold box for aluminum casting. The molten aluminum used to cast a graphene aluminum casting is evenly mixed with graphene powder, so there is a certain proportion of graphene inside the graphene aluminum casting. And because there is a thin layer of graphene powder on the surface of one of the EVA films, these graphene powder will adhere to the surface of the graphene aluminum casting without falling off.

A data mining-based method for real-time production quality prediction of aluminum alloy casting, includes: (1) based on mold flow analysis results, installing sensors on a casting mold; wherein the sensors include at least one temperature sensor, at least one pressure sensor, at least one contact sensor, and a multi-functional gas sensor; (2) during casting production, real-time collecting temperatures, pressures, and contact times of the aluminum liquid at a plurality of locations of the casting mold, and pressure, composition, humidity, and temperature of gas in a mold cavity, by the installed sensors, for constructing an aluminum alloy casting process parameter set; and (3) inputting the process parameter set to a production quality prediction model; wherein the production quality prediction model is used to judge whether the production quality is qualified, which is obtained by mining a relationship between history casting process parameters and casting quality data.