High manganese-containing magnesium-manganese intermediate alloy and preparation

A master alloy, mass percentage content technology, applied in the field of metal material preparation, can solve the problems of difficult preparation of high manganese-containing magnesium-manganese master alloy, reduced manganese solubility, high working temperature, etc., to save energy and labor, and less process , short time effect

Inactive Publication Date: 2010-11-03
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantages of this method are: (1) the working temperature is as high as 900°C, and magnesium is extremely flammable or even explosive; (2) the solubility of manganese in magnesium is low, and at 652°C peritectic temperature, the solubility of manganese is only 3.4%. As the temperature drops, the solubility of manganese in magnesium decreases sharply, making it difficult to prepare magnesium-manganese master alloys with high manganese content

Method used

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  • High manganese-containing magnesium-manganese intermediate alloy and preparation
  • High manganese-containing magnesium-manganese intermediate alloy and preparation
  • High manganese-containing magnesium-manganese intermediate alloy and preparation

Examples

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Effect test

Embodiment 1

[0028] Get 115 grams of pure magnesium and 11 grams of metal manganese powder, and melt them according to the above method to make a high manganese content magnesium-manganese master alloy. The obtained magnesium-manganese master alloy ingot with high manganese content, the metallographic structure is shown in figure 1 . Sampling was evenly taken at 5 points along the diagonal line of the longitudinal section of the ingot, and tested according to GB / T 1506-2002 to obtain a magnesium-manganese master alloy with an average Mn content of 10.8% (mass percentage) and a high manganese content.

Embodiment 2

[0030] Get 120 grams of pure magnesium and 13.7 grams of metal manganese powder, melt according to the above-mentioned method and make high manganese content magnesium-manganese master alloy. The obtained magnesium-manganese master alloy ingot with high manganese content, the metallographic structure is shown in figure 2 . Sampling was uniformly taken at 5 points along the diagonal line of the longitudinal section of the ingot, and tested according to GB / T 1506-2002 to obtain a magnesium-manganese master alloy with a high manganese content and an average Mn content of 12.2% (mass percentage).

[0031] in conclusion:

[0032] According to the method described in the patent of the present invention, a magnesium-manganese master alloy with a high manganese content can be prepared with a Mn content of 8-12% (mass percentage). The method is simple to operate, the raw materials and equipment used are common products in the market, and has the characteristics of low cost and suita...

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Abstract

The invention relates to a magnesium-manganese intermediate alloy with high-manganese content and a method for making the same. The composition of the alloy in percentage by weight is: 8 to 12 percent of manganese metal powder and the balance being magnesium. The alloy is made by smelting in an electromagnetic induction furnace and adopting a stirring casting method. Argon shield is adopted in smelting and casting processes. The smelting temperature is between 700 and 800 DEG C, and the casting temperature is room temperature. The magnesium-manganese intermediate alloy can be used to manufacture various magnesium alloys which are widely used at present or the novel magnesium alloy with high-manganese content. The magnesium-manganese intermediate alloy can be used to smelt the novel magnesium alloy products with excellent corrosion resistance and weldability. The magnesium-manganese intermediate alloy of the invention is simple in production process, needs no special equipment, and hasthe advantage of low production cost.

Description

technical field [0001] The invention relates to a method for preparing metal materials, in particular to a magnesium-manganese master alloy with high manganese content and its preparation method. Background technique [0002] Magnesium alloy is the lightest structural material in practical application, its density is only 2 / 3 of aluminum and 1 / 5 of steel. Its specific strength and specific stiffness can reach or exceed steel and aluminum alloy. Magnesium alloys also have good thermal conductivity, electromagnetic shielding, and vibration resistance; magnesium alloys are non-toxic and non-polluting to the environment, and the cost of recycling is low; and magnesium reserves are extremely rich on the earth, accounting for about 2.7% of the mass of the earth's crust , the mass content of magnesium in seawater reaches 0.13%. Therefore, magnesium alloy is regarded as a new material to replace traditional metal materials in the future, and has been paid more and more attention b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/00C22C1/04
Inventor 高家诚李锐王勇范科
Owner CHONGQING UNIV
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