A high strength and toughness die-casting aluminum alloy without heat treatment, a preparation method and an article thereof are provided. Aluminum alloy includes the following components in percentage by mass: 7.0-10.0 wt. % of silicon, not more than 0.05 wt. % of copper, not more than 0.4 wt. % of magnesium, 0.3-0.7 wt. % of manganese, not more than 0.2 wt. % of iron, not more than 0.07 wt. % of zinc, not more than 0.2 wt. % of titanium, 0.015-0.03 wt. % of strontium, 0.01-0.1 wt. % of vanadium, 0.01-0.1 wt. % of zirconium, and other unavoidable impurity elements, each not more than 0.05 wt. %. The total amount of other unavoidable impurity elements is not more than 0.25 wt. %, and the rest is aluminum.

A method includes performing pre-treating, comprising fire-roasting or wet-washing, on the processed aluminum scraps of aeronautical aluminum alloy. The method further includes performing pressing formation on the pre-treated processed aluminum scraps of aeronautical aluminum alloy to form block-shaped aluminum scraps. The method further includes performing oxygen-controlled smelting on the block-shaped aluminum scraps in a smelting furnace to form aluminum alloy melt. The method further includes performing casting on the aluminum alloy melt to obtain an aluminum alloy product of meeting component requirements of aeronautical aluminum alloy.

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.

A composite production method includes impregnating a plate-shaped porous inorganic structure and a fibrous inorganic material with a metal while the fibrous inorganic material is arranged to be adjacent to the porous inorganic structure. In the composite structure, first and second phases are adjacent to each other by using a porous inorganic structure having a porous silicon carbide ceramic sintered body and the fibrous inorganic material, the first phase being a phase in which the porous silicon carbide ceramic sintered body is impregnated with the metal, the second phase being a phase in which the fibrous inorganic material is impregnated with the metal, a percentage of the porous silicon carbide ceramic sintered body in the first phase is 50 to 80 volume percent, and a percentage of the fibrous inorganic material in the second phase is 3 to 20 volume percent. A composite is produced by the method.

A magnesium alloy is suitable for use as a corrodible downhole article, wherein the alloy includes: (a) 11-15 wt % Y, (b) 0.5-5 wt % in total of rare earth metals other than Y, (c) 0-1 wt % Zr, (d) 0.1-5 wt % Ni, and (e) at least 70 wt % Mg. It has been surprisingly found by the inventors that by increasing the Y content of the alloy to the range specified above, increased age hardening response and hence increased 0.2% proof stress can be achieved.

Molten metal can be introduced into a liquid sump during direct chill (DC) casting, such as DC casting of aluminum, through a feed tube having a nozzle with an opening. The opening of the nozzle can be shaped and/or sized to generate a jet of molten metal within the liquid sump. The jet of molten metal can exhibit Reynolds number at or above a threshold amount. Such a jet can achieve improved metallurgical properties over standard casting techniques, such as improved grain refinement. A sufficiently high Reynolds number can be achieved by supplying the molten metal at a sufficiently high velocity. When supplying molten metal at a constant volumetric flow rate (e.g., to avoid fluctuations in casting speed), the nozzle can be crafted to have a smaller-than-standard diameter opening, thus generating a higher-than-standard velocity jet.

A manufacturing method of golf strike pad includes the following steps of shaping an embryonic form of the golf strike pad, solidifying the embryonic form of the golf strike pad, heating the solidified embryonic form of the golf strike pad, positioning the heated embryonic form of the golf strike pad in a mold, casting the melted aluminum-magnesium alloy into the mold, taking the blank of the golf strike pad from the mold and grinding the blank of the golf strike pad for finishing the manufacturing method.

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 invention relates to a method for producing a strip made of an AlMgSi alloy in which a rolling ingot is cast of an AlMgSi alloy, the rolling ingot is subjected to homogenization, the rolling ingot which has been brought to rolling temperature is hot-rolled, and then is optionally cold-rolled to the final thickness thereof. The problem of providing a method for producing an aluminum strip made of an AlMgSi alloy and an aluminum strip, which has a higher breaking elongation with constant strength and therefore enables higher degrees of deformation in producing structured metal sheets, is solved in that the hot strip has a temperature of no more than 130 C. directly at the exit of the last rolling pass, preferably a temperature of no more than 100 C., and the hot strip is coiled at that or a lower temperature.

A method and device for producing motor vehicle chassis parts is provided. The motor vehicle chassis parts can be subjected to tensile stress, compressive stress and torsion and the mechanical strength of the motor vehicle chassis parts can be adjusted over the respective cross-section. The motor vehicle chassis parts have high ductility and temperature stability and are made of an AlSiZnMg alloy by permanent mold casting.