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Zn-Mg alloy ingot and preparation method thereof

A technology of alloy ingot casting and magnesium-zirconium master alloy, which is applied in the field of alloys, can solve problems such as poor plasticity and serious thermal cracking tendency, and achieve the effects of improved casting performance, comprehensive performance enhancement, and uniform grain refinement

Inactive Publication Date: 2018-03-23
安徽恒利增材制造科技有限公司
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Problems solved by technology

However, it still has many shortcomings such as serious thermal cracking tendency and poor plasticity.

Method used

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  • Zn-Mg alloy ingot and preparation method thereof

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preparation example Construction

[0027] The preparation method of the above-mentioned zinc-magnesium alloy includes a melting process and a heat treatment process, and the specific steps are as follows:

[0028] The smelting process is in N 2 and SF 6 Under the condition of mixed gas protection, the steps are as follows:

[0029] (1) Weighing and baking materials: according to the mass percentage of raw materials, weigh pure magnesium ingots, pure zinc ingots, magnesium-zirconium master alloys, magnesium-calcium master alloys, magnesium-cerium master alloys and magnesium-yttrium master alloys respectively, and mix the various raw materials Preheat in a preheating furnace at 280°C for 10 hours;

[0030] (2) Melting: Put the preheated magnesium ingot in a melting furnace and heat it to 690°C until the pure magnesium ingot is completely melted, then raise the temperature to 740°C, add pure zinc ingot into the molten magnesium liquid, and wait until the pure zinc ingot is completely melted After melting, add t...

Embodiment 1

[0035] The preparation method of embodiment 1-3 is that above-mentioned preparation method comprises smelting process and heat treatment process, but embodiment 1 only adds magnesia cerium master alloy, embodiment 2 only adds magnesia yttrium master alloy, embodiment 3 adds magnesia cerium master alloy and Magnesium-yttrium master alloy; the preparation method of embodiment 4 is that the above-mentioned preparation method only includes the smelting process.

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Abstract

The invention relates to a Zn-Mg alloy ingot and a preparation method thereof. The Zn-Mg alloy ingot comprises the following raw materials by mass: 5.0%-6.5% of Zn, 0.45%-0.55% of Zr, 0.08%-0.15% of Ca, 0.3%-0.5% of Ce, 1.0%-1.5% of Yb, no more than 0.03% of inevitable impurities, and the balance Mg. The preparation method of the Zn-Mg alloy ingot comprises a smelting process and a heat treatmentprocess, wherein the melting process comprises the steps of material weighing and drying, smelting, refining, standing and casting, and the heat treatment process comprises the steps of solid solutiontreatment and aging treatment. According to the Zn-Mg alloy ingot prepared with the method provided by the invention, through rear earth adding treatment and heat treatment, the corrosion resistanceand mechanical property of the alloy ingot can be improved effectively, and crystal grains in the alloy ingot structure are further refined uniformly, so that the comprehensive performance of alloy isimproved effectively.

Description

technical field [0001] The invention belongs to the field of alloys, and in particular relates to a zinc-magnesium alloy ingot and a preparation method thereof. Background technique [0002] Magnesium alloy is the lightest metal structure material, its specific strength and specific stiffness are very high, its specific elastic modulus is roughly the same as that of high-strength aluminum alloy and alloy steel, and it has good damping performance. Therefore, the use of magnesium alloy materials can give full play to the characteristics of good electromagnetic shielding effect, small weight, strong shock absorption ability and easy forming of the material, and has great application potential in the industrial field. So far, magnesium alloy materials have been widely used in the fields of aerospace science and automobile manufacturing. With the development of material technology, magnesium alloy materials will have broader application prospects and use value. [0003] ZK60 al...

Claims

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Application Information

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IPC IPC(8): C22C23/04C22C1/03C22F1/06
CPCC22C1/03C22C23/04C22F1/06
Inventor 常峰夏建强徐宏王明杰
Owner 安徽恒利增材制造科技有限公司
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