A corrosion-resistant magnesium alloy

A magnesium alloy and corrosion-resistant technology, applied in the field of metal alloy materials, can solve the problems of poor plasticity at room temperature, low mechanical properties, and no corrosion resistance, and achieve the effects of reducing the corrosion rate, improving the corrosion resistance, and reducing the number of

Inactive Publication Date: 2016-08-17
河南德威科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned technical defects, the present invention provides a corrosion-resistant magnesium alloy, which solves the problems of easy combustion during smelting, poor room temperature plasticity, low mechanical properties, and non-corrosion resistance in the prior art. Based on the existing AZ91 magnesium alloy In addition, by adding a certain amount of metal vanadium for alloying and modification treatment, the corrosion resistance of AZ91 magnesium alloy is significantly improved, which meets the corrosion requirements of AZ91 magnesium alloy

Method used

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  • A corrosion-resistant magnesium alloy

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Effect test

Embodiment 1

[0020] A corrosion-resistant magnesium alloy, the weight percentage of the chemical composition of the magnesium alloy is: Al is 6wt%, Zn is 0.4wt%, Mn is 0.01wt%, V is 0.001wt%, and the balance is Mg.

[0021] Weigh the materials according to the ratio, preheat each component to 220°C, put aluminum ingots, zinc ingots and manganese ingots into a low-carbon steel crucible with a preheating temperature of 280°C to melt, and pass through SF 6- CO 2 Shielding gas (SF 6 :CO 2 The volume ratio is 1:10), when the components are completely melted and the melt temperature reaches 740°C, vanadium ingots are added, the vanadium ingots are preheated to 200°C, then continuously stirred, and SF 6 -CO 2 Protect the gas until the alloy is completely melted, stir for 5 minutes, stand still for 20 minutes when the temperature reaches 710°C, and pour at 700°C to finally obtain a corrosion-resistant magnesium alloy containing vanadium.

Embodiment 2

[0023] A corrosion-resistant magnesium alloy, the weight percentage of the chemical composition of the magnesium alloy is: Al is 9wt%, Zn is 1.0wt%, Mn is 0.3wt%, V is 1.0wt%, and the balance is Mg.

[0024] Weigh the materials according to the ratio, preheat each component to 220°C, put aluminum ingots, zinc ingots and manganese ingots into a low-carbon steel crucible with a preheating temperature of 280°C to melt, and pass through SF 6- CO 2 Shielding gas (SF 6 :CO 2 The volume ratio is 1:10), when the components are completely melted and the melt temperature reaches 730°C, vanadium ingots are added, the vanadium ingots are preheated to 200°C, then continuously stirred, and SF 6 -CO 2 Protect the gas until the alloy is completely melted, stir for 5 minutes, stand still for 20 minutes when the temperature reaches 710°C, and pour at 700°C to finally obtain a corrosion-resistant magnesium alloy containing vanadium.

Embodiment 3

[0026] A corrosion-resistant magnesium alloy, the weight percentage of the chemical composition of the magnesium alloy is: Al is 7wt%, Zn is 0.5wt%, Mn is 0.03wt%, V is 0.009wt%, and the balance is Mg.

[0027] The method for preparing the corrosion-resistant magnesium alloy is the same as that in Example 1.

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Abstract

The invention relates to the technical field of metal alloy materials, and particularly relates to corrosion-resistant magnesium alloy. The magnesium alloy comprises the following chemical components in percentage by mass: 6-9wt% of Al, 0.4-1.0wt% of Zn, 0.01-0.3wt% of Mn, 0.001-1.0wt% of V, and the balance of Mg. Due to addition of vanadium, the corrosion potential of the magnesium alloy is improved, the corrosion current density is lowered, the corrosion rate of the magnesium alloy is obviously lowered, and is just 52.81% of original alloy corrosion rate, and the corrosion resistance of the alloy is significantly improved.

Description

technical field [0001] The invention relates to the technical field of metal alloy materials, in particular to a corrosion-resistant magnesium alloy. Background technique [0002] Magnesium alloy has higher specific strength and specific stiffness (density is 1.738g / cm 3 ) Good shock absorption and machinability and other superior properties, it is the lightest metal structural material in practical applications. Therefore, the application of magnesium alloy as a structural material has developed rapidly in recent years. [0003] At present, the most widely used ones are AZ91D magnesium alloy used in the foundry industry, and deformed magnesium alloys AZ31, AZ61, AZ80, ZK60 used in profiles and plates. However, its poor corrosion resistance has become an obstacle to the industrial application of magnesium alloys, and how to improve its corrosion resistance is very important. Research work on improving the corrosion resistance of magnesium alloys has been carried out extens...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/02
CPCC22C23/02
Inventor 许春辉姬胜国
Owner 河南德威科技股份有限公司
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