A kind of ultra-light high-strength magnesium-lithium alloy containing low Y and preparation method thereof
A magnesium-lithium alloy, ultra-light technology, applied in the field of metal materials, can solve the problems that cannot reflect the absolute advantage of magnesium-lithium alloy low density, over-aging softening, etc., to achieve the suppression of over-aging softening phenomenon, convenient operation, and simple smelting process Effect
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Embodiment 1
[0040] An ultra-light and high-strength magnesium-lithium alloy containing low Y, the mass percent of each component is: 17wt.% Li, 6wt.% Al, 1.5wt.% Ag, 3wt.% Y, 1wt.% C , the balance is Mg and unavoidable impurities, wherein, the impurities are Si, Fe, Cu and Ni whose total amount is less than 0.02% by mass.
[0041] The first step is the smelting stage. The whole smelting process is carried out in a vacuum intermediate frequency induction furnace under the protection of argon:
[0042] ①Baking material: take pure Mg, pure Al, Mg-20% Y master alloy, MgCO respectively 3 -CaCO 3 Mixture and pure Li block, the raw materials except Li block were preheated and dried in an oven at 250 °C for 2 h.
[0043] ②Feeding: Put all the above-mentioned preheated raw materials into the crucible, and at the same time, put the metal mold into the designated position in the vacuum melting furnace.
[0044] ③ Vacuuming: Use the mechanical pump that comes with the vacuum melting furnace to vac...
Embodiment 2
[0056] A kind of ultra-light and high-strength magnesium-lithium alloy containing low Y. The mass percent of each component is: 12wt.% Li, 0.5wt.% Al, 0.8wt.% Ag, 0.2wt.% Y, and the balance is Mg and unavoidable impurities, wherein the impurities are Si, Fe, Cu and Ni whose total amount is less than 0.02% by mass.
[0057] The first step is the smelting stage. The whole smelting process is carried out in a vacuum intermediate frequency induction furnace under the protection of argon:
[0058] ①Baking material: Take pure Mg, pure Al, Ag powder, Mg-20%Y master alloy and pure Li block respectively, and preheat and dry the raw materials except Li block in an oven at 180°C for 3h.
[0059] ②Feeding: Put all the above-mentioned preheated raw materials into the crucible, and at the same time, put the metal mold into the designated position in the vacuum melting furnace.
[0060] ③ Vacuuming: use the mechanical pump that comes with the vacuum melting furnace to vacuumize the vacuum m...
Embodiment 3
[0071] An ultra-light and high-strength magnesium-lithium alloy containing low Y, the mass percent of each component is: 14wt.% Li, 3wt.% Al, 1.6wt.% Y, 0.5wt.% C, and the balance is Mg and unavoidable impurities, wherein the impurities are Si, Fe, Cu and Ni whose total amount is less than 0.02% by mass.
[0072] The first step is the smelting stage. The whole smelting process is carried out in a vacuum intermediate frequency induction furnace under the protection of argon:
[0073] ①Baking material: take pure Mg, pure Al, Ag powder, Mg-20% Y master alloy, MgCO 3 -CaCO 3 Mixture and pure Li block, the raw materials except Li block were preheated and dried in an oven at 215 °C for 2.5 h.
[0074] ②Feeding: Put all the above-mentioned preheated raw materials into the crucible, and at the same time, put the metal mold into the designated position in the vacuum melting furnace.
[0075] ③ Vacuuming: Use the mechanical pump that comes with the vacuum melting furnace to vacuumize...
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