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Compression casting heat-stable magnesium alloy

A magnesium alloy, heat-resistant technology, applied in the field of magnesium alloys, can solve problems affecting the heat resistance of alloys, achieve the effects of improving high-temperature performance, solving poor creep resistance, and uniform distribution

Inactive Publication Date: 2007-08-08
鄂尔多斯市天旭轻合金有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the higher Al content in the alloy, there is more Mg in the alloy 17 Al 12 phase, which affects the heat resistance of the alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0013] The alloy composition (percentage by weight) is: 3.1% Al, 0.3% Mn, 0.3% Y, 0.01% Ti, the impurity element is less than 0.02%, and the rest is Mg. The alloy smelting process is as follows: configure the alloy according to the above ingredients, add 100 kg of industrial pure magnesium to the resistance crucible boiler, and use N 2 +0.2% SF 6 Mixed gas protection, after the magnesium is completely melted, add 5.00Kg of industrial pure aluminum and 5.5Kg of Al-10Mn master alloy at 620°C, add Mg-Y master alloy at 650°C, add 0.25Kg of Al-10Ti master alloy at 720°C and Keep warm at this temperature for 30 minutes, and stir once every 5 minutes during the heat preservation process. After the alloy elements are completely dissolved, stir the alloy with a tool to make the composition uniform, cool down to 680°C pouring temperature and let it stand for 10 minutes, and then pass quantitative The gating system is poured into the die-casting machine for die-casting. The room temper...

example 2

[0015] The alloy composition (percentage by weight) is: 8.0% Al, 0.4% Mn, 1.1% Y, 0.2% Ti, the impurity element is less than 0.02%, and the rest is Mg. The melting process of the alloy is as follows: configure the alloy according to the above ingredients, add 100 kg of industrial pure magnesium to the resistance crucible boiler, heat and melt, and sprinkle a small amount of covering agent for protection at the same time, after the magnesium is completely melted, add 6.30 kg of industrial pure aluminum at 620 ° C Add 4.5Kg of Al-10Mn master alloy, add Mg-Y master alloy at 600-650°C, add 2.5Kg of Al-10Ti master alloy at 720°C and keep it at this temperature for 30 minutes, stirring once every 5 minutes during the heat preservation process , After the alloying elements are completely dissolved, stir the alloy with a tool to make the composition uniform, cool down to the pouring temperature of 680°C and let it stand for 10 minutes, then pour it into the die-casting machine through ...

example 3

[0017] The alloy composition (percentage by weight) is: 4.7% Al, 0.3% Mn, 0.8% Y, 0.01% Ti, the impurity element is less than 0.02%, and the rest is Mg. The alloy smelting process is as follows: configure the alloy according to the above ingredients, add 100 kg of industrial pure magnesium to the resistance crucible boiler, and use N 2 +0.2% SF 6 Mixed gas protection, after the magnesium is completely melted, add 5.00Kg of industrial pure aluminum and 3.3Kg of Al-10Mn master alloy at 620°C, add Mg-Y master alloy at 650°C, add 0.12Kg of Al-10Ti master alloy at 720°C and Keep warm at this temperature for 30 minutes, and stir once every 5 minutes during the heat preservation process. After the alloy elements are completely dissolved, stir the alloy with a tool to make the composition uniform, cool down to 680°C pouring temperature and let it stand for 10 minutes, and then pass quantitative The gating system is poured into the die-casting machine for die-casting. The room temper...

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Abstract

The invention discloses an Mg-Al based cast heatproof magnesium alloy, which comprises the following parts: 3.0-8.0 % Al, 0.30-0.60% Mn, 0.3-2.0% Y or Gd, 0.001-0.2% Ti, less than 0.005% Fe, less than 0.015%Cu, less than 0.002% Ni and Mg. The invention improves dynamic property of alloy, which reduces heat-cracking tendency of alloy.

Description

technical field [0001] The invention relates to the technical field of magnesium alloys, and is mainly used for producing light alloy parts of automobile power systems, in particular to a die-casting heat-resistant magnesium alloy. Background technique [0002] At present, lightweight has gradually become the development direction of modern automobiles, and magnesium alloys, as the most promising light alloys, will be more widely used in the automobile industry. At present, the magnesium alloy parts in automobiles are basically die-casting parts. Among the existing cast magnesium alloys, AZ91D, AM50 and other alloys are most widely used. These magnesium alloys have excellent mechanical properties, corrosion resistance and die-casting properties. However, when the operating temperature exceeds 120°C, the creep properties of these alloys drop sharply, so they cannot be used to produce structural parts such as automotive power transmission and load bearing systems. The heat-r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02C22F1/06
Inventor 王渠东郑江
Owner 鄂尔多斯市天旭轻合金有限责任公司
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