A kind of high-strength cast aluminum-lithium-copper-zinc alloy with low lithium content and preparation method thereof
A technology for casting aluminum and its content is applied in the field of high-strength casting aluminum-lithium-copper-zinc alloy and its preparation, and can solve the problems of numerous production links, anisotropy, and increasing the production cost of casting aluminum-lithium alloy.
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Embodiment 1
[0044] The composition and weight percentage of the alloy are 1%Li-4.25%Cu-0.7%Mg-0.2%Zr-0.27%Mn-1.05%Zn-0.35%Ag-0.05%Ti. The preparation method is as follows: first put pure aluminum and Al-Cu master alloy into a smelting furnace to melt, the melting temperature is 800 °C, and use hexachlorohexane (C 2 Cl 6 ) degassing and slag removal; then add Al-Zr master alloy, Al-Mn master alloy, Al-Ti master alloy to melt, adopt C 2 Cl 6 Degassing and slag removal; cool down to 750°C, add pure zinc, pure magnesium, pure silver and melt, use argon to degas and remove slag; then add 30 parts of LiCl, 60 parts of KCl and 10 parts of AlF on the surface of the melt 3 The formed molten salt covering agent is filled with argon to protect the melt; then pure lithium is pressed into the above molten alloy melt, and the C 2 Cl 6 Combining degassing and deslagging refining with argon, standing still; cooling to 700°C and casting under the protection of argon. The ingot was homogenized and ann...
Embodiment 2
[0046] The composition and weight percentage of the alloy are 1%Li-4%Cu-1%Mg-0.2%Zr-0.3%Mn-1.2%Zn-0.1%Ti-0.1%Ag. The preparation method is as follows: first put pure aluminum and Al-Cu master alloy into a smelting furnace to melt, the melting temperature is 750 °C, and use hexachlorohexane (C 2 Cl 6 ) degassing and slag removal; then add Al-Zr master alloy, Al-Mn master alloy, Al-Ti master alloy to melt, adopt C 2 Cl 6 Degassing and slag removal; cool down to 740°C, add pure zinc, pure magnesium and pure silver and melt, use argon to degas and remove slag; then add 40 parts of LiCl, 50 parts of KCl and 2 parts of AlF on the surface of the melt 3 The formed molten salt covering agent is filled with argon to protect the melt; then pure lithium is pressed into the above molten alloy melt, and the C 2 Cl 6 Combining degassing and slag refining with argon, let stand; cool down to 710°C and cast into shape under the protection of argon. The ingot was homogenized and annealed at...
Embodiment 3
[0048] The composition and weight percentage of the alloy are 1%Li-3%Cu-1%Mg-0.2%Zr-0.25%Mn-6%Zn-0.1%Ti-0.3%Ag. The preparation method is as follows: first put pure aluminum and Al-Cu intermediate alloy into a melting furnace to melt, the melting temperature is 760 ° C, and use hexachlorohexane (C 2 Cl 6 ) degassing and slag removal; then add Al-Zr master alloy, Al-Mn master alloy, Al-Ti master alloy to melt, adopt C 2 Cl 6 Degassing and slag removal; cool down to 750°C, add pure zinc, pure magnesium, pure silver and melt, use argon to degas and remove slag; then add 30 parts of LiCl, 45 parts of KCl and 5 parts of AlF on the surface of the melt 3 The formed molten salt covering agent is filled with argon to protect the melt; then pure lithium is pressed into the above molten alloy melt, and the C 2 Cl 6 Combined with argon for degassing and deslagging refining, let stand; cool down to 730°C and cast into shape under the protection of argon. The ingot was homogenized and ...
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