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Magnesium-aluminum alloy cast ingot

A magnesium-aluminum alloy and ingot casting technology, applied in the field of alloys, can solve the problems of reduced mechanical properties, large grain size of AZ91, etc., and achieve the effects of comprehensive performance enhancement, grain refinement, and uniform structure adjustment.

Inactive Publication Date: 2018-03-20
安徽恒利增材制造科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the grains of AZ91 before refinement are usually relatively large, the overall mechanical properties are reduced.

Method used

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  • Magnesium-aluminum alloy cast ingot
  • Magnesium-aluminum alloy cast ingot
  • Magnesium-aluminum alloy cast ingot

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] The preparation method of the above-mentioned magnesium-aluminum alloy ingot includes a melting process and a heat treatment process, and the specific steps are as follows:

[0026] The smelting process is in N 2 , CO 2 and SF 6 Under the condition of mixed gas protection, the steps are as follows:

[0027] (1) Weighing and drying materials: according to the mass percentage of raw materials, respectively weigh magnesium ingots, aluminum ingots, zinc ingots, magnesium-manganese master alloys, Al-4Ti-B master alloys and Al-5Ti-0.8C master alloys; and Various raw materials are preheated in a preheating furnace at 200°C for 4 hours;

[0028] (2) Melting: heat the preheated magnesium ingot to 690°C in a melting furnace until the magnesium ingot is completely melted, then raise the temperature to 740°C, add preheated aluminum and zinc ingots to the molten magnesium, Stir until it is completely melted, then add the preheated magnesium-manganese master alloy, Al-4Ti-B maste...

Embodiment 1

[0033] In the preparation step of Example 1, only the refining agent Al-4Ti-B master alloy is added; in the preparation step of Example 2, only the refining agent Al-5Ti-0.8C master alloy is added; in the preparation step of Example 3, the refining agent is added at the same time Al-4Ti-B master alloy and Al-5Ti-0.8C master alloy.

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Abstract

The invention discloses a magnesium-aluminum alloy cast ingot. The magnesium-aluminum alloy cast ingot comprises, by mass, 8.5%-9.5% of Al, 0.45%-0.9% of Zn, 0.17%-0.4% of Mn, 0.18%-0.2% of Al-Ti-B intermediate alloy, 0.19%-0.21% of Al-Ti-C intermediate alloy, smaller than 0.1% of Si, Cu, Ni and Fe impurity elements and the balance magnesium. A preparation method of the magnesium-aluminum alloy cast ingot comprises a smelting technology and a heat treatment technology. The smelting technology comprises a weighing, drying, smelting, refining, standing and casting. The heat treatment technologycomprises solid solution treatment and aging treatment. According to the obtained magnesium-aluminum alloy cast ingot, after addition of a refiner is added, the grain size, the extension property andother mechanical properties of the magnesium-aluminum alloy are greatly improved; and after heat treatment is conducted, the strength of the alloy cast ingot is further improved.

Description

technical field [0001] The invention belongs to the field of alloys, and in particular relates to a magnesium-aluminum alloy ingot. 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 molding 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] AZ91 is a commonly used Mg-Al alloy,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02C22C1/03C22C1/06C22F1/06
CPCC22C1/03C22C1/06C22C23/02C22F1/06
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