Magnesium aluminum alloy and preparation method thereof

A magnesium-aluminum alloy and magnesium-aluminum technology, which is applied in the field of magnesium-aluminum alloy and its preparation, can solve the problems of increased labor intensity, increased production cost, and low production efficiency, and achieves improved creep capacity, improved tensile properties, and tensile strength. high intensity effect

Inactive Publication Date: 2018-02-16
安徽金兰压铸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of materials and processing methods, magnesium-aluminum alloys processed by traditional methods are prone to defects such as fractures, wrinkles, and fatigue during processing, and the yield is low, resulting in waste of materials.
At the same time, the production efficiency is low, which increases the labor intensity and increases the production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1: A magnesium-aluminum alloy of this embodiment, the weight percentage of each element is: aluminum 7%, manganese 0.1%, cerium 1.0%, chromium 3%, zinc 0.2%, strontium 1.2%, titanium 0.7% %, the rest is composed of magnesium and unavoidable impurities, and the magnesium content is 72.8%. The mass percentages of impurity elements are: 1% cobalt, 1% tungsten, 0.5% niobium, and 1.5% vanadium. A method for preparing magnesium-aluminum alloys, comprising the following steps:

[0012] (1) Put magnesium and aluminum into the smelting furnace, heat to 750°C to melt into a melt, then add cerium, chromium, zinc, strontium, and titanium into the melt with a gas carrier, keep stirring at a constant temperature for 8 minutes, To obtain a mixed melt, adjust the temperature of the mixed melt to 780°C, wrap the refining agent with aluminum foil, then press it into the molten aluminum with a bell jar, and refine for 20 minutes. The amount of refining agent used is 1.5% of th...

Embodiment 2

[0014] Embodiment 2: A magnesium-aluminum alloy of this embodiment, the weight percentage of each element is: aluminum 12%, manganese 0.1%, cerium 0.1%, chromium 4%, zinc 0.3%, strontium 0.5%, titanium 1.0% %, the rest is composed of magnesium and unavoidable impurities, and the magnesium content is 68%. The mass percentages of impurity elements are: 2% cobalt, 0.5% tungsten, 0.5% niobium, and 1.0% vanadium.

[0015] A method for preparing magnesium-aluminum alloys, comprising the following steps:

[0016] (1) Put magnesium and aluminum into the smelting furnace, heat to 780°C to melt into a melt, then add cerium, chromium, zinc, strontium, and titanium into the melt with a gas carrier, keep stirring at a constant temperature for 7 minutes, To obtain a mixed melt, wrap the refining agent with aluminum foil, then press it into the molten aluminum with a bell jar, and refine for 16 minutes. The amount of refining agent used is 1.5% of the weight of the aluminum alloy liquid, an...

Embodiment 3

[0018] Embodiment 3: A magnesium-aluminum alloy of this embodiment, the weight percentage of each element is: aluminum 10%, manganese 0.8%, cerium 0.5%, chromium 6%, zinc 0.4%, strontium 0.8%, titanium 0.8% %, the rest is composed of magnesium and unavoidable impurities, and the magnesium content is 66.2%. The mass percentage of impurity elements is: cobalt 1%, tungsten 2%, niobium 1%, vanadium 0.5%.

[0019] A method for preparing magnesium-aluminum alloys, comprising the following steps:

[0020] (1) Put magnesium and aluminum into the smelting furnace, heat to 800°C to melt into a melt, then add cerium, chromium, zinc, strontium, and titanium into the melt with a gas carrier, keep stirring at a constant temperature for 5 minutes, To obtain a mixed melt, adjust the temperature of the mixed melt to 780°C, wrap the refining agent with aluminum foil, then press it into the molten aluminum with a bell jar, and refine for 12 minutes. The amount of refining agent used is 1.5% of ...

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PUM

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Abstract

The invention discloses magnesium aluminum alloy and a preparation method thereof. The magnesium aluminum cast alloy comprises, by weight, 7-12% of aluminum, 0.1-0.8% of manganese, 0.1-1.0% of cerium,3-6% of chromium, 0.2-0.4% of zinc, 0.5-1.2% of strontium, 0.7-1.0% of titanium and the balance magnesium and inevitable impurities. The impurities comprises, by mass, 1-3% of cobalt, less than or equal to 5% of tungsten, less than or equal to 2% of niobium, less than or equal to 2% of vanadium. The content of magnesium is no less than 65%. According to the magnesium aluminum alloy preparation method, through melting, refining and liquid surface scum removing, a mixed melt is fed into an intermediate frequency furnace and deposited on a substrate after atomizing through high-pressure argon, alloy ingots are formed, then the alloy ingots are cooled to the room temperature, and a finished magnesium aluminum alloy product is obtained. According to the technical scheme, the magnesium aluminumalloy has good mechanical properties and structure uniformity, the corrosion resistance is improved, the material utilization rate is high, the yield of products is increased, and the production costis reduced.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a magnesium-aluminum alloy and a preparation method thereof. Background technique [0002] The main element of magnesium-aluminum-aluminum aluminum sheet is magnesium, and a small amount of aluminum or other metal materials are added to make the material have better mechanical properties and structural uniformity, so that it has better machinability and good thermal shear resistance. performance and better extrudability. And because of its good corrosion resistance, it is also called antirust magnesium aluminum alloy. Because it is a metal itself, its thermal conductivity and strength are particularly prominent. The magnesium-aluminum alloy plate is light in weight, low in density, good in heat dissipation, and strong in pressure resistance, which can fully meet the requirements of high integration, lightness, miniaturization, anti-dropping, electromagnetic shielding and heat dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02C22C1/02C22C1/06
CPCC22C23/02C22C1/02C22C1/06
Inventor 何明华
Owner 安徽金兰压铸有限公司
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