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High-strength Mg-Gd-Y-Zn-Mn alloy

A high-strength, alloy technology, applied in the field of high-strength Mg-Gd-Y-Zn-Mn alloys, can solve the problems of low elongation of the alloy and increase the cost of the alloy, so as to improve the strength and toughness at room temperature, reduce the cost of the alloy, and increase the room temperature Effect of Tensile Strength and Yield Strength

Active Publication Date: 2012-10-17
重庆昱华新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The price of metal Zr and its alloys is significantly higher than that of metal Mn and its alloys, which will increase the cost of the alloy, and the alloy has a low elongation

Method used

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  • High-strength Mg-Gd-Y-Zn-Mn alloy
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  • High-strength Mg-Gd-Y-Zn-Mn alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The manufacture method of this high-strength Mg-Gd-Y-Zn-Mn alloy is carried out as follows:

[0034]Step 1: In a vacuum melting furnace, the ingot is melted, and argon is introduced for protection, and alloying elements are added according to weight percentage Gd=8.4%, Y=5.3%, Zn=1.65%, Mn=0.6%. Among them, Gd, Y, Mn and Zn are respectively added in the form of Mg-30Gd master alloy, Mg-25Y master alloy, Mg-3Mn master alloy and pure Zn.

[0035] Insulate at 850°C and stir with electromagnetic induction to fully melt the raw materials. After the alloy is completely melted, continue to stand at 850°C for 10 minutes, and then cast.

[0036] Step 2: Homogenize the smelted magnesium alloy ingot, the process parameters are: temperature 540°C±10°C, time 4 hours. After the homogenization treatment, the magnesium alloy ingot was subjected to conventional hot extrusion, the extrusion temperature was 400°C, the extrusion ratio was 11, and the extrusion speed was constant.

[0037...

Embodiment 2

[0042] The manufacturing method of this high-strength Mg-Gd-Y-Zn-Mn alloy is the same as that of Example 1.

[0043] Example 3: A high-strength Mg-Gd-Y-Zn-Mn alloy, alloy composition (weight percent): Gd-9.19%, Y-5.6%, Zn-2.82%, Mn-0.72%, and impurity elements are less than 0.1%, the rest is magnesium.

Embodiment 3

[0044] The manufacturing method of this high-strength Mg-Gd-Y-Zn-Mn alloy is the same as that of Example 1.

[0045] Embodiment 4: A kind of high-strength Mg-Gd-Y-Zn-Mn alloy, alloy composition (weight percentage): Gd-9.22%, Y-5.59%, Zn-3.74%, Mn-0.56%, impurity element less than 0.1%, the rest is magnesium.

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Abstract

The present invention relates to a high-strength Mg-Gd-Y-Zn-Mn alloy. The alloy comprises the following alloying elements distributed in the alloy, by weight, 8.2-10.2% of Gd, 5.0-6.0% of Y, 0.5-4.0% of Zn, 0.5-0.8% of Mn, and the balance of Mg and inevitable impurities. The alloy is prepared by adopting the following process: material preparing, vacuum melting and ingot casting, uniformization annealing, extrusion and heat treatment. According to the present invention, Mg, Zn, Gd and Y form a large amount of long period phases in the Mg-Gd-Y-Zn-Mn alloy so as to provide a significant dispersion strengthening effect, and the time effect treatment is adopted to introduce the strengthening effect of the metastable phase; the process is a preparation method for the high-strength deformation Mg alloy, wherein the method integrates solid solution strengthening, precipitation strengthening and deformation strengthening; the method has characteristics of simple process, strong portability, easy operation and low cost; with the method, tensile strength and yield strength of the allay at the room temperature are significantly improved, and difficulty of allay application limitation due to low mechanical property is solved so as to expand the application range of the Mg alloy.

Description

technical field [0001] The invention relates to a deformed magnesium alloy and a manufacturing method thereof, in particular to a high-strength Mg-Gd-Y-Zn-Mn alloy. The alloy is a five-element magnesium alloy comprising Mg, Gd, Y, Zn and Mn five alloying elements, the high strength refers to the material can achieve a tensile strength ≥ 495MPa. [0002] Background technique [0003] The elastic modulus of magnesium is relatively small, and it can produce large deformation under the action of force. Therefore, under the action of impact load, magnesium alloy can absorb large impact energy and can manufacture impact-resistant parts. Magnesium and its alloys, as the lightest commonly used metal structural materials, have attracted more and more attention, and have been applied to a certain extent in the fields of national defense, aerospace, high-speed rail transportation, and electronic communications. However, due to the low strength of magnesium alloys, it is difficult to ...

Claims

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Application Information

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IPC IPC(8): C22C23/06C22C1/03C22F1/06
Inventor 王敬丰周海宋鹏飞秦德昭潘复生
Owner 重庆昱华新材料科技有限公司
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