Zn-Mg zinc alloy and preparation method and application thereof

[0093] Embodiment 1, preparation as-cast Zn-Mg series alloy

[0094] Using pure Zn (99.99wt.%) and pure Mg (99.99wt.%) (purchased from Beijing Cuibin Nonferrous Metals Technology Development Center) as raw materials, according to different mass ratios (the mass ratios of Zn and Mg are respectively 99:1 and 95:5) mixed in CO 2 +SF 6 Under the protection of the atmosphere, smelt at 650 ° C. After the raw materials are fully melted, after 10 minutes of heat preservation, the circulating water is rapidly cooled to obtain a Zn-Mg alloy ingot (photo as figure 1 shown), where Zn-1Mg means that the mass ratio of Zn to Mg is 99:1, and Zn-5Mg means that the mass ratio of Zn to Mg is 95:5.

[0095] Embodiment 2, preparation rolling state Zn-Mg series alloy

[0096] First, the as-cast Zn-Mg alloy ingot is prepared according to the steps in Example 1; It is repeatedly rolled in a rolling mill with a hot rolling temperature of 250°C, and finally rolled to a thickness of 1.5mm at 250°C in a finishing mill.

[0097] figure 2 This is a photograph of the as-rolled Zn-Mg alloy (Zn-1Mg) obtained in this example.

[0098] Embodiment 3, preparation extruded state Zn-Mg series alloy

[0099] Prepare according to the following 1) or 2) steps:

[0100] 1) First, the as-cast Zn-1Mg alloy ingot was prepared according to the steps in Example 1, and the Zn-1Mg alloy rod was prepared by extrusion, and radial extrusion was adopted, and the extrusion temperature was 200°C. The extrusion ratio was 20, and a Zn-Mg alloy rod (Zn-1Mg) with a diameter of 10 mm was prepared.

[0101] 2) First prepare the as-cast Zn-Mg alloy ingot according to the steps in Example 1, and use a high vacuum rapid quenching system to prepare a rapidly solidified Zn-Mg alloy ribbon. After mixing, a high-vacuum quenching system is used to prepare rapidly solidified Zn-Mg thin strips. The parameters are 2-8g feeding amount, 3-7kW induction heating power, 0.80mm distance between nozzle and roller, 0.1MPa injection pressure, and 2000r / mln and nozzle slit size 1film×8mm×6mm. Then crush the ribbon and press it into a blank. The