Preparation method for high-strength and high-plasticity magnesium-zinc-manganese-yttrium alloy
A magnesium-zinc-manganese-yttrium and high-plasticity technology is applied in the field of preparation of high-strength and high-plasticity magnesium-zinc-manganese-yttrium alloys, which can solve the problems of increasing the use cost of the alloy, ineffective strengthening effect, and restricting the application of magnesium alloys, thereby increasing energy consumption. , the effect of eliminating macrosegregation and improving plasticity
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Embodiment 1
[0029] Prepare magnesium-zinc-manganese-yttrium alloy as follows
[0030] (1) Melting: Melt the magnesium ingot and the magnesium-manganese master alloy together at 690°C, then add the zinc ingot and the magnesium-yttrium master alloy. After removing the slag, let it stand until the impurities settle, and cast it semi-continuously at 680°C to produce a semi-continuous ingot;
[0031] (2) Extrusion treatment: heat the semi-continuous ingot prepared in step (1) to 500° C. for 12 hours, then keep it warm for 14 hours, then cool it to 25° C., and perform rolling, and finally preheat the rolled ingot for 1 hour, According to the extrusion ratio of 30 and extrusion molding at 400°C, a magnesium-zinc-manganese-yttrium alloy is obtained. In terms of mass percentage, the prepared magnesium-zinc-manganese-yttrium alloy includes the following components: Zn: 2.2%, Mn: 0.5%, Avoid impurity ≤ 0.15%, the rest is magnesium.
Embodiment 2
[0033] Prepare magnesium-zinc-manganese-yttrium alloy as follows
[0034] (1) Melting: Melt the magnesium ingot and the magnesium-manganese master alloy together at 710°C, then add the zinc ingot and the magnesium-yttrium master alloy. After 25 minutes, argon gas is introduced for 15 minutes. After removing the slag, let it stand until the impurities settle, and then cast semi-continuously at 685°C to produce a semi-continuous ingot;
[0035] (2) Extrusion treatment: heat up the semi-continuous ingot prepared in step (1) to 500°C for 6 hours, then keep it warm for 16 hours, then cool it to 30°C, and perform rolling, and finally preheat the rolled ingot for 1 hour, According to the extrusion ratio of 16 and extrusion molding at 430°C, a magnesium-zinc-manganese-yttrium alloy is obtained. In terms of mass percentage, the prepared magnesium-zinc-manganese-yttrium alloy includes the following components: Zn: 2.5%, Mn: 1.2%, Y : 0.8%, unavoidable impurities ≤ 0.15%, the rest is ma...
Embodiment 3
[0037] Prepare magnesium-zinc-manganese-yttrium alloy as follows
[0038] (1) Melting: Melt the magnesium ingot and the magnesium-manganese master alloy together at 700°C, then add the zinc ingot and the magnesium-yttrium master alloy, and after 20 minutes, pass in argon gas for 20 minutes. After removing the slag, let it stand until the impurities settle, and cast it semi-continuously at 675°C to produce a semi-continuous ingot;
[0039] (2) Extrusion treatment: heat up the semi-continuous ingot prepared in step (1) to 500°C for 9 hours, then keep it warm for 12 hours, then cool it to 30°C, and carry out rolling, and finally preheat the rolled ingot for 1.5 hours , according to the extrusion ratio of 25 at 450 ° C, the obtained magnesium-zinc-manganese-yttrium alloy, in terms of mass percentage, the prepared magnesium-zinc-manganese-yttrium alloy includes the following components: Zn: 0.8%, Mn: 1.5%, Y: 1.8%, unavoidable impurities ≤ 0.15%, the rest is magnesium.
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