The invention discloses a high-plasticity cast aluminum alloy and a gravity casting preparation method thereof, and belongs to the fields of metal materials and metallurgy The high-plasticity cast aluminum alloy is prepared from the following components in percentage by weight: 75 to 135% of Si, 05 to 08% of Mg, 02 to 05% of Mn, 01 to 04% of Ti, 001 to 1% of RE, not greater than 04% of Fe, not greater than 100ppm of P, 100 to 600ppm of Sr, and the balance of Al, wherein RE is one or some of Gd, Y, Nd, Sm, Er, Yb and La After gravity casting, solid solution treatment and artificial aging treatment, the high-plasticity cast aluminum alloy has the elongation delta of being not less than 18% The prepared alloy is outstanding in casting performance, low in cost, simple in process, high in production efficiency, and obvious in progress, and the applicable scope of Al-Si cast aluminum alloy is expanded

High-plasticity cast aluminum alloy and extrusion casting preparation method thereof

Aluminum-silicon-magnesium cast aluminum alloy and manufacturing method thereof

The invention relates to a preparation method of a gas compressor volute of a turbocharger and belongs to the technical field of alloy materials. The preparation method comprises the following steps of burdening, smelting, modifying, deslagging, degassing, refining, metal mold gravity casting and heat treatment. According to the gas compressor volute of the turbocharger prepared by the invention, the adding time of alloy elements in an alloy material is reasonably designed, by adopting a metal mold gravity casting process and the T6 heat treatment combining solid solution treatment with aging treatment, the mechanical performance of the gas compressor volute is high, the machinability is good, the tensile strength reaches 295 MPa, the elongation is 4%, the brinell hardness is 90HBS, the toughness is higher than that of a conventional material by 25%, and the gas compressor volute meets the requirements on the safety and reliability for matching with a main machine.

Preparation method of gas compressor volute of turbocharger

The invention provides aluminum-silicon-magnesium casting aluminum alloy and a method for manufacturing the same, and belongs to the technical field of aluminum alloy materials. The aluminum alloy comprises, by mass, from 6.8% to 7.2% of Si, from 0.8% to 1.1% of Mg, from 0.45% to 0.6% of Fe, lower than or equal to 0.05% of Cu, lower than or equal to 0.07% of Zn, from 0.25% to 0.45% of Mn, from 0.1% to 0.15% of Sb, from 0.12% to 0.16% of Ti, lower than or equal to 0.03% of each single impurity element in other impurity elements, lower than or equal to 0.1% of total impurity elements and the balance aluminum. The invention further provides the method for manufacturing the aluminum-silicon-magnesium casting aluminum alloy. The aluminum-silicon-magnesium casting aluminum alloy is high in mechanical property, the tensile strength reaches 300-330MPa, the elongation percentage is 1%, the yield strength RP (rapid prototyping) 0.2% can reach 249-270MPa, and the requirement on the mechanical property under a high-temperature environment is met.

Aluminum-silicon-magnesium casting aluminum alloy and method for manufacturing same

The invention discloses a high-strength cast aluminum alloy used for high-strength structures of transportation industry of aviation, aerospace, marine navigation, high-speed trains and the like The high-strength cast aluminum alloy comprises the following components in percentage by weight: 28%-32% of copper, 28%-32% of manganese, 01%-02% of titanium, 22%-29% of aluminum rare earth alloy, 01%-02% of zinc, 01% of strontium, 005% of tin, 14%-18% of boron and the balance of aluminum The high-strength cast aluminum alloy has room-temperature tensile strength of 440-470 MPa and elongation rate of 58%-68% after aging treatment

High-strength cast aluminum alloy

The invention relates to aluminum-silicon-magnesium casted aluminum alloy and a casting process thereof. The aluminum alloy contains the following elements by mass: silicon 6.5 to 7.5, magnesium 0.40 to 0.60, titanium 0.10 to 0.30, strontium 0.01 to 0.03, iron no more than 0.20, copper no more than 0.10, zinc no more than 0.20, manganese no more than 0.10, beryllium no more than 0.01 and vanadium no more than 0.20, with the balance being aluminum. The casting process for the aluminum alloy comprises the following steps: putting A356.2 aluminum ingots in a furnace for melting; adding a modification material for refining; standing the product obtained in the previous step for a predetermined time and carrying out casting; sequentially carrying out solid solution, cooling, transfer and aging treatment. The invention enables the problems of low strength and elongation percentage of aluminum-silicon alloy and poor casting performance and corrosion resistance of aluminum-copper alloy and aluminum-zinc alloy to be overcome and tensile strength, toughness and casting performance of the aluminum alloy to be improved, and enables the aluminum alloy to have the advantages of low cost and good corrosion resistance.

Aluminum-silicon-magnesium casted aluminum alloy and casting process thereof

The present invention relates to an Al-Si-Mg cast aluminum alloy and a process for casting the same, the aluminum alloy comprising the following elements in weight percentage: silicon 6.5%-7.5%; magnesium 0.40%-0.60%; titanium 0.10%-0.30%; strontium 0.01%-0.03%; iron <=0.20%; copper <=0.10%; zinc <=0.20%; manganese <=0.10%; beryllium <=0.01%; vanadium <=0.02%; and the balance being aluminum. The process for casting the aluminum alloy comprises the steps of: loading A356.2 aluminum ingot into a furnace for smelting; adding a modifying material for refinement; standing for a predetermined time and then casting; then performing the treatments of solid solution, cooling and aging in succession. The present invention overcomes deficiencies such as the low strength and low elongation of Al-Si cast alloy, and the relatively poor casting properties and corrosion resistance of Al-Cu cast alloy and Al-Zn cast alloy, improves the tensile strength, toughness, and casting properties of Al alloy, and has low costs and good corrosion resistance.

Jin Liu

Papers

Aluminum-silicon-magnesium casted aluminum alloy and casting process thereof

Al-si-mg cast aluminum alloy and process for casting same