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Novel Mg-Al-TiB2-rare earth element intermediate alloy and preparation method thereof

A technology of mg-al-tib2- and rare earth elements is applied in the field of preparing the master alloy to achieve the effect of improving mechanical properties

Inactive Publication Date: 2015-12-30
SUZHOU TIANJIAN METAL NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the use of rare earth elements to improve the mechanical properties of magnesium-aluminum master alloys.

Method used

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  • Novel Mg-Al-TiB2-rare earth element intermediate alloy and preparation method thereof
  • Novel Mg-Al-TiB2-rare earth element intermediate alloy and preparation method thereof
  • Novel Mg-Al-TiB2-rare earth element intermediate alloy and preparation method thereof

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Experimental program
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Embodiment Construction

[0026] The present invention has obtained master alloy blank by following steps:

[0027] Step 1: At room temperature, prepare 75-mesh magnesium powder, 150-mesh aluminum powder, rare earth with a La and Ce content of 25%, and TiB with a particle size of 450 μm as shown in Table 1 below 2 particles;

[0028] Step 2: Mix and stir the four kinds of powders at about 20°C, and add an appropriate amount of absolute ethanol while stirring, and the stirring time is about 10 minutes;

[0029] Step 3: Put the evenly stirred powder into a mold with a capacity of 1.5 kg, press it into small pieces and dry it; when pressing, the temperature is about 25°C, and the pressure is 50-55KN;

[0030] Step 4: Place the completed small block in a vacuum heating furnace, and fill it with 99.999% pure inert gas Ar, so that the heating furnace is in a vacuum state, and the pressure should be kept at 5.0×10 -3 Below Pa; raise the temperature of the heating furnace to 400-500°C and keep it warm for 3....

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Abstract

The invention provides a novel Mg-Al-TiB2-rare earth element intermediate alloy. The intermediate alloy comprises 20%-25% of Mg by mass, 3%-5.5% of TiB2 by mass, 0.1%-0.25% of rare earth by mass and the balance of Al and inevitable impurities. Compared with traditional Mg-Al intermediate alloy materials, the intermediate alloy has the advantages that the strength is enhanced from 200-300 MPa to 330-415 MPa, the hardness and the elongation are also obviously increased, so that the intermediate alloy can be applied to production of components such as automotive parts and components and the like which require higher carrying capacity and has broad application prospect. The invention further relates to a method for producing the novel Mg-Al intermediate alloy.

Description

technical field [0001] The present invention relates to a kind of Mg-Al-TiB 2 - Rare earth element master alloy, and method for preparing the master alloy. Background technique [0002] Magnesium-aluminum alloy is an alloy based on magnesium and aluminum with other elements added. It has the advantages of low density, high specific strength and specific stiffness, good shock absorption performance, good electrical and thermal conductivity, and good processing performance. Therefore, it is used in aircraft It is widely used in aerospace, rocket and missile manufacturing industries, and is a lightweight metal structural material with excellent performance. However, magnesium-aluminum alloys also have defects such as easy oxidation and combustion, poor heat resistance, poor corrosion resistance, and easy oxidation and corrosion in humid air. Therefore, the surface of parts made of magnesium and aluminum alloys needs to be chemically treated or painted before use. In addition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/06C22C1/10
CPCC22C1/10C22C21/06
Inventor 陆海荣孙飞赵勇
Owner SUZHOU TIANJIAN METAL NEW MATERIAL