Extrusion cast aluminum alloy material and preparation method thereof
An aluminum alloy material and squeeze casting technology, which is applied in the field of metal materials, can solve the problems of large fluctuation in the tensile strength of the alloy, and the reliability of the strength needs to be improved, and achieves the reduction of the hot cracking tendency of the alloy, the simple preparation method, and the feasible process. high control effect
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[0043] Example 1:
[0044] The squeeze casting aluminum alloy material provided in this embodiment is composed of the following elements in mass percentage: Mg: 2.5%, Zn: 3.0%, Cu: 0.5%, Y: 0.01%, Ti: 0.01%, B: 0.002%, Sr: 0.1%, Zr: 0.1%, and unavoidable impurities Fe≤0.3%, Si≤0.15%, and Al balance.
[0045] The squeeze casting method of aluminum alloy provided in this embodiment includes the following steps:
[0046] a. Smelt the alloy to obtain an aluminum alloy melt.
[0047] The smelting steps are: (1) Bake the material, preheat the raw materials at 250°C for 2 hours; (2) Smelt, set the melting temperature of the melting furnace to 710°C, and when the furnace temperature rises to 300°C, add industrial pure aluminum, aluminum and copper. When the alloy is melted, stir evenly; when the melt temperature drops to 690℃, add industrial pure zinc and industrial pure magnesium, melt, and stir evenly until it melts; heat the melt to 740℃ and add aluminum-yttrium Mix the master alloy even...
Example Embodiment
[0052] Example 2:
[0053] The squeeze casting aluminum alloy material provided in this embodiment is composed of the following elements in mass percentage: Mg: 2.5%, Zn: 3.0%, Cu: 0.5%, Y: 0.01%, Ti: 0.01%, Sr: 0.1%, Zr: 0.1%, and unavoidable impurities Fe≤0.3%, Si≤0.15%, Al balance.
[0054] The squeeze casting method of aluminum alloy provided in this embodiment includes the following steps:
[0055] a. Smelt the alloy to obtain an aluminum alloy melt. Melting steps: (1) Bake the material, preheat the raw materials at 250°C for 2 hours; (2) Melt, set the melting temperature of the melting furnace to 710°C, and when the furnace temperature rises to 300°C, add industrial pure aluminum and aluminum-copper intermediate alloy , To melt, stir evenly; when the melt temperature drops to 690℃, add industrial pure zinc and industrial pure magnesium, melt, and stir evenly until it melts; increase the temperature of the melt to 740℃ and add the aluminum-yttrium intermediate Mix the alloy e...
Example Embodiment
[0059] Example 3:
[0060] The squeeze casting aluminum alloy material provided in this embodiment is composed of the following elements in mass percentage: Mg: 2.5%, Zn: 3.0%, Cu: 0.5%, aluminum-cerium-rich mixed rare earth: 1.5%, Ti: 0.01% , B: 0.002%, Sr: 0.1%, Zr: 0.15%, and unavoidable impurities Fe≤0.3%, Si≤0.15%, Al balance.
[0061] This embodiment provides a squeeze casting method of the aluminum alloy, and the steps are as follows:
[0062] a. Smelt the alloy to obtain an aluminum alloy melt. Melting steps: (1) Bake the material, preheat the raw materials at 250°C for 2 hours; (2) Melt, set the melting temperature of the melting furnace to 710°C, and when the furnace temperature rises to 300°C, add industrial pure aluminum and aluminum-copper intermediate alloy , To melt, stir evenly; when the melt temperature drops to 690 ℃, add industrial pure zinc and industrial pure magnesium, melt, and stir evenly until it melts; heat the melt to 740 ℃, add aluminum-rich cerium Mix ...
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