A Treatment Method for Improving the Wear and Corrosion Resistance of Al-mg-Si Alloy

An al-mg-si, corrosion-resistant technology, applied in the treatment field of improving the wear and corrosion resistance of Al-Mg-Si alloys, can solve the problems of strong intergranular corrosion tendency, regional segregation, dendrite segregation, etc. Improve the structure, improve the wear and corrosion resistance, reduce the effect of dendrite segregation

Active Publication Date: 2021-11-05
LIAONING UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the non-equilibrium solidified as-cast structure of 6xxx series aluminum alloys, there are still eutectic structures, uneven distribution of intragranular components and large dendrites, which are prone to dendrite segregation, regional segregation and strong intergranular corrosion tendency, etc. problem, which seriously affects the overall performance of the alloy

Method used

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  • A Treatment Method for Improving the Wear and Corrosion Resistance of Al-mg-Si Alloy
  • A Treatment Method for Improving the Wear and Corrosion Resistance of Al-mg-Si Alloy
  • A Treatment Method for Improving the Wear and Corrosion Resistance of Al-mg-Si Alloy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Using common Al-Mg-Si alloy as material to prepare Al-Mg-Si alloy melt;

[0060] Wherein, the mass ratio of each component in the alloy melt is: Si: 3%, Mg: 4.5%, Al: 92.5%.

[0061] When the temperature of the Al-Mg-Si alloy melt is 720°C, an electric pulse device is used to perform electric pulse treatment on the Al-Mg-Si alloy melt to obtain an inoculated Al-Mg-Si alloy melt;

[0062] In the electric pulse processing process, the setting pulse voltage is 300V, and the pulse frequency is 3Hz; the output function of controlling the electric pulse device is: f(t)=Ae -αt ; Where, A is the amplitude; α is the rate of discharge; t is the time of action.

[0063] The inoculated Al-Mg-Si alloy melt is casted to obtain the treated Al-Mg-Si alloy.

Embodiment 2

[0065] Using common Al-Mg-Si alloy as material to prepare Al-Mg-Si alloy melt;

[0066] Wherein, the mass ratio of each component in the alloy melt is: Si: 3%, Mg: 4.5%, Al: 92.5%.

[0067] When the temperature of the Al-Mg-Si alloy melt is 720°C, an electric pulse device is used to perform electric pulse treatment on the Al-Mg-Si alloy melt to obtain an inoculated Al-Mg-Si alloy melt;

[0068] In the electric pulse processing process, the pulse voltage is set to 500V, and the pulse frequency is 3Hz; the output function of controlling the electric pulse device is: f(t)=Ae -αt ; Where, A is the amplitude; α is the rate of discharge; t is the time of action.

[0069] The inoculated Al-Mg-Si alloy melt is casted to obtain the treated Al-Mg-Si alloy.

Embodiment 3

[0071] Using common Al-Mg-Si alloy as material to prepare Al-Mg-Si alloy melt;

[0072] Wherein, the mass ratio of each component in the alloy melt is: Si: 3%, Mg: 4.5%, Al: 92.5%.

[0073] When the temperature of the Al-Mg-Si alloy melt is 720°C, an electric pulse device is used to perform electric pulse treatment on the Al-Mg-Si alloy melt to obtain an inoculated Al-Mg-Si alloy melt;

[0074] In the electric pulse processing process, the setting pulse voltage is 700V, and the pulse frequency is 3Hz; the output function of controlling the electric pulse device is: f(t)=Ae -αt ; Where, A is the amplitude; α is the rate of discharge; t is the time of action.

[0075] The inoculated Al-Mg-Si alloy melt is casted to obtain the treated Al-Mg-Si alloy.

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Abstract

The invention discloses a treatment method for improving the wear resistance and corrosion resistance of Al-Mg-Si alloy, which comprises the following steps: Step 1, preparing Al-Mg-Si alloy melt; wherein, each component in the alloy melt The mass ratio is: Si: 2% to 8%, Mg: 3% to 6%, Al: 86% to 95%; Step 2, using an electric pulse device to electrically conduct the Al-Mg-Si alloy melt Pulse treatment to obtain the Al-Mg-Si alloy melt of inoculation treatment; wherein, in the electric pulse treatment process, the output function of controlling the electric pulse device is: f(t)=Ae ‑αt ; In the formula, A is the amplitude; α is the rate of discharge; t is the time of action; Step 3, the Al-Mg-Si alloy melt casting molding of described inoculation treatment, obtains the Al-Mg-Si alloy after electric pulse treatment Si alloy.

Description

technical field [0001] The invention belongs to the technical field of metal processing, in particular to a treatment method for improving the wear resistance and corrosion resistance of Al-Mg-Si alloys. Background technique [0002] 6xxx series aluminum alloys have the advantages of low density, strong mold filling ability, strong weldability and corrosion resistance, and are widely used in aerospace, transportation, construction, automobile and other fields. However, in the non-equilibrium solidified as-cast structure of 6xxx series aluminum alloys, there are still eutectic structures, uneven distribution of intragranular components and large dendrites, which are prone to dendrite segregation, regional segregation and strong intergranular corrosion tendency, etc. problems, seriously affecting the overall performance of the alloy. [0003] For this reason, many scientific researchers have proposed to improve the as-cast structure of aluminum alloy from the source of smelti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/02C22C21/02C22C21/08C22F3/00
CPCC22C1/026C22C21/02C22C21/08C22F3/00
Inventor 赵作福李鑫訾薇刘亮商剑张越齐锦刚王冰
Owner LIAONING UNIVERSITY OF TECHNOLOGY
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