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Magnesium-based spherical quasicrystal master alloy and preparation method thereof

An intermediate alloy and spherical technology, applied in the field of magnesium-based alloys, can solve the problems of waste of energy consumption, difficult industrialized production, complicated control, etc., and achieve the effects of improving mechanical properties, simplifying production steps, and simple preparation process

Inactive Publication Date: 2010-05-12
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a magnesium-based spherical quasicrystal master alloy and a preparation method thereof, the magnesium-based spherical quasicrystal master alloy is a Mg-Zn-Y-C spherical quasicrystal master alloy, and its preparation method is The method of preparing magnesium-based spherical quasicrystalline master alloy by controlling the solidification rate. The present invention not only overcomes the defects of the prior art, such as waste of energy consumption, high requirements for production equipment, complex control and difficulty in realizing industrialized production, but also produces Mg -Zn-Y-C spherical quasicrystalline master alloy greatly improves the high-temperature mechanical properties of the reinforced magnesium alloy composite.

Method used

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Effect test

Embodiment 1

[0026] The first step is to smelt the raw material melt of magnesium-based spherical quasicrystal master alloy

[0027] Set the heating temperature of the crucible resistance furnace to be 790°C. When the crucible temperature rose to 380°C, add magnesium ingots accounting for 60.5% of the total raw material mass percent and zinc ingots accounting for 35.5% of the total raw material mass percent to the crucible. And start to pass CO with a volume ratio of 100:1 2 / SF 6 The mixed gas is used as a protective gas, and the temperature continues to rise. After the magnesium ingot and the zinc ingot in the crucible are completely melted, add 3.7% yttrium ingot accounting for the mass percentage of the total amount of raw materials, and stir for 1 minute after the yttrium ingot is completely melted. In the Mg-Zn-Y alloy melt, add the carbon powder that accounts for 0.3% of the mass percentage of the total amount of raw materials with a particle size of 200 mesh carbon powder, and the...

Embodiment 2

[0033] The first step is to smelt the raw material melt of magnesium-based spherical quasicrystal master alloy

[0034] Set the heating temperature of the crucible resistance furnace to be 780°C, and when the crucible temperature rises to 350°C, add magnesium ingots accounting for 65.0% of the total mass percentage of raw materials and zinc ingots accounting for 30.0% of the total mass percentage of raw materials to the crucible, And start to pass CO with a volume ratio of 100:1 2 / SF 6 The mixed gas is used as a protective gas, and the temperature continues to rise. After the magnesium ingot and zinc ingot in the crucible are completely melted, add yttrium ingot accounting for 4.5% of the total mass percentage of raw materials, and stir for 1 minute after the yttrium ingot is completely melted. In the Mg-Zn-Y alloy melt, add the carbon powder that accounts for 0.5% of the mass percentage of the total amount of raw materials with a particle size of 200 mesh carbon powder, and...

Embodiment 3

[0038] The first step is to smelt the raw material melt of magnesium-based spherical quasicrystal master alloy

[0039] Set the heating temperature of the crucible resistance furnace to be 800°C. When the crucible temperature rose to 400°C, add magnesium ingots accounting for 55.0% of the total mass percentage of raw materials and zinc ingots accounting for 40.0% of the total mass percentage of raw materials to the crucible. And start to pass CO with a volume ratio of 100:1 2 / SF 6 The mixed gas is used as a shielding gas, and the temperature continues to rise. After the magnesium ingot and the zinc ingot in the crucible are completely melted, add yttrium ingot accounting for 4.9% of the total mass percentage of raw materials, and stir for 2 minutes after the yttrium ingot is completely melted. In the Mg-Zn-Y alloy melt, add the carbon powder that accounts for 0.1% of the mass percentage of the total amount of raw materials and be 200 mesh carbon powder, and the raw material ...

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Abstract

The invention provides a magnesium-based spherical quasicrystal master alloy and a preparation method thereof, which relates to a magnesium-based alloy taking zinc as a secondary main component. The alloy is a Mg-Zn-Y-C quaternary magnesium-based icosahedral spherical quasicrystal master alloy comprising the following chemical components: 55.0 to 65.0 percent of Mg, 30.0 to 40.0 percent of Zn, 2.5 to 5.5 percent of Y, and 0.1 to 0.5 percent of C, wherein the diameter of spherical quasicrystals is 3 to 7 mu m; the average diameter of the spherical quasicrystals is 6 mu m; and the volume of the spherical quasicrystals accounts for 40 to 48 percent of the total volume of the alloy. The preparation method is characterized by adopting control over solidification rate, namely pouring molten alloy into a casting mold with cooling rate controllable and controlling the solidification rate in a range between 68.4 and 84.8 K / s. The alloy can improve the mechanical properties of alloy material better when a magnesium alloy matrix is reinforced, and has the advantages of simple process, not high demand for equipment, extensive sources of raw materials, convenience for realizing industrialized production and resource conservation.

Description

technical field [0001] The technical solution of the invention relates to a magnesium-based alloy with zinc as the secondary main component, specifically a magnesium-based spherical quasi-crystal master alloy and a preparation method thereof. Background technique [0002] Compared with the commonly used metal or alloy materials at present, magnesium has the advantages of light weight, high damping performance, strong electromagnetic shielding ability and good heat dissipation, so that magnesium alloy materials have great application potential in national economy and national defense construction; in addition , Magnesium is easy to recycle and reuse, and is a green and environmentally friendly metal that does not pollute the environment. Therefore, research on magnesium alloys has become a hot spot in the field of material research. Although the specific strength (approximately 14-16) and specific fatigue strength of existing magnesium alloys are higher than those of cast alu...

Claims

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Application Information

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IPC IPC(8): C22C23/04C22C1/02B22D21/04
Inventor 赵维民李海鹏蔚成全王志峰丁俭李永艳黄春瑛史中方
Owner HEBEI UNIV OF TECH
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