Coarse-grain magnesium alloy board with superplasticity and preparation method thereof
A technology of magnesium alloy and superplasticity, which is applied in the field of coarse-grained magnesium alloy sheet and its preparation, can solve the problems of high cost, long production cycle, high requirements for equipment and tooling molds, so as to avoid grain refinement process and reduce production cost , the effect of improving production efficiency
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Embodiment 1
[0024] In the embodiment of the present invention, a superplastic coarse-grained magnesium alloy plate is prepared by the following mass percentage components: aluminum 8.5%, silver 0.6%, zinc 0.50%, manganese 0.30%, rare earth: 0.03%, calcium 0.015% %, the balance being magnesium. The preparation method of the superplastic coarse-grained magnesium alloy plate comprises the following steps:
[0025] (1) Melt the magnesium ingot in the temperature range of 710°C, pass inert gas after the magnesium ingot is completely melted, and add manganese chloride, aluminum, zinc, magnesium-rare earth, silver, magnesium-calcium in sequence after the temperature rises to 770°C , into the inert gas for refining, the refining time is 30min, after the refining is completed, the slag is removed, the alloy liquid is left to stand and cooled to the pouring temperature of 700°C for casting into ingots.
[0026] (2) Heating the magnesium alloy ingot to 280°C for 10 hours, and annealing for homogeni...
Embodiment 2
[0029] In the embodiment of the present invention, a superplastic coarse-grained magnesium alloy plate is prepared by the following mass percentage components: aluminum 8.3%, silver 0.1%, zinc 0.35%, manganese 0.25%, rare earth: 0.06%, calcium 0.010 %, the balance being magnesium. The preparation method of the superplastic coarse-grained magnesium alloy plate comprises the following steps:
[0030] (1) Melt the magnesium ingot in the temperature range of 700°C, pass inert gas after the magnesium ingot is completely melted, and add manganese chloride, aluminum, zinc, magnesium-rare earth, silver, magnesium-calcium in sequence after the temperature rises to 770°C , into the inert gas for refining, the refining time is 15min, after the refining is completed, the slag is removed, the alloy liquid is left to stand and cooled to the pouring temperature of 700°C for casting into ingots.
[0031] (2) Heat the magnesium alloy ingot to 270°C for 10 hours, heat-preserve for uniform anne...
Embodiment 3
[0034] In the embodiment of the present invention, a superplastic coarse-grained magnesium alloy plate is prepared by the following mass percentage components: aluminum 8.1%, silver 0.2%, zinc 0.40%, manganese 0.20%, rare earth: 0.05%, calcium 0.008 %, the balance being magnesium. The preparation method of the superplastic coarse-grained magnesium alloy plate comprises the following steps:
[0035](1) Melt the magnesium ingot in the temperature range of 690°C, pass inert gas after the magnesium ingot is completely melted, and add manganese chloride, aluminum, zinc, magnesium-rare earth, silver, magnesium-calcium in sequence after the temperature rises to 760°C , into the inert gas for refining, the refining time is 15min, after the refining is completed, the slag is removed, the alloy liquid is left to stand and cooled to the pouring temperature of 690°C for casting into ingots.
[0036] (2) Heat the magnesium alloy ingot to 260°C for 12h, heat-insulate for uniform annealing,...
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