Magnesium base 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 difficult industrialized production, high production equipment requirements, complicated control, etc., and achieve the effects of simplifying production steps, improving mechanical properties, and simple preparation process

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

AI Technical Summary

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 method for making the same. The magnesium-based spherical quasicrystal master alloy is a Mg-Zn-Y-Ti spherical quasicrystal master alloy. A method for preparing a magnesium-based spherical quasicrystalline master alloy by solidification rate. The invention not only overcomes the defects of the prior art, such as waste of energy consumption, high requirements for production equipment, complicated control and difficulty in realizing industrialized production, but also the obtained Mg-Zn The -Y-Ti spherical quasicrystalline master alloy greatly improves the high temperature mechanical properties of the reinforced magnesium alloy composite.

Method used

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  • Magnesium base spherical quasicrystal master alloy and preparation method thereof
  • Magnesium base spherical quasicrystal master alloy and preparation method thereof

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Experimental program
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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 57.5% of the total raw material mass percent and zinc ingots accounting for 36% 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 2.5% 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 4.0% magnesium-titanium intermediate alloy accounting for the mass percentage of the total amount of raw materials, the composition mass ratio of this magnesi...

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. When the crucible temperature rose to 350°C, add magnesium ingots accounting for 61.0% 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 4.0% 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 5% magnesium-titanium intermediate alloy accounting for the mass percentage of the total amount of raw materials, the composition mass ratio of this magnesiu...

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 33.5% 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 the zinc ingot in the crucible are completely melted, add yttrium ingot accounting for 5.5% of the total mass percentage of raw materials, and stir for 2 minutes after the yttrium ingot is completely melted. Add 6.0% magnesium-titanium master alloy accounting for the mass percentage of the total amount of raw materials in the Mg-Zn-Y alloy melt, the composition mass ratio of this magnesiu...

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Abstract

The invention provides a magnesium base spherical quasicrystal master alloy and a preparation method thereof, relating to magnesium base alloys with zinc as a submaster component. The alloy is Mg-Zn-Y-Ti quaternary magnesium base icosahedral spherical quasicrystal master alloy, comprising the following chemical components: 55.0-65.0% of Mg, 30.0-40.0% of Zn, 2.5-5.5% of Y and 0.1-0.5% of Ti, wherein the diameter of the spherical quasicrystal is 6-10mu m and the mean diameter is 8 mu m. The volume of the spherical quasicrystal is 30-40% of the total volume of the alloy. The preparation method is characterized by adopting control of the solidification rate, namely pouring the alloy melt into a casting mold capable of controlling the cooling rate, wherein the solidification rate is controlled between 52.6K/s and 68.4K/s. The product of the invention can better improve the mechanical property of the alloy materials while enhancing the magnesium alloy substrate, has simple process, low requirement on equipment and wide raw material sources, is convenient to realize industrialized production and saves resources.

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 its preparation method. 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 aluminum,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/04C22C1/03B22D27/04B22D21/04
Inventor 赵维民王志峰李海鹏蔚成全丁俭李永艳黄春瑛史中方
Owner HEBEI UNIV OF TECH
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