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Regulation and control method for strengthening and toughening of rare earth magnesium alloy

A rare earth magnesium, strengthening and toughening technology, applied in metal processing equipment and other directions, can solve the problems of limited application prospects, mechanical properties such as strength and toughness of magnesium alloys cannot meet the needs of industrial production, etc., and achieve excellent comprehensive performance and toughness. Improved, significant effect

Active Publication Date: 2022-04-22
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties of magnesium alloys such as strength and toughness sometimes cannot meet the needs of industrial production, which limits its application prospects.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take the Mg-4Er-2Y-3Zn-0.4Mn (wt.%, mass percentage) alloy, apply an external field of equal pressure, the pressure is 0.6GPa, the solution temperature is 530 ° C, the solution time is 10 hours, and the solid solution is completed. Remove the pressure and cool with 80°C hot water. Heat the sample to 480°C by electromagnetic induction, place the sample on a hydraulic press, and carry out compression deformation with the X axis as the compression axis, and the strain rate is 10 -3 the s -1 ; When the true strain in the X direction reaches 0.4, stop the compression and take out the sample for water quenching, then heat the sample to 440°C by electromagnetic induction, and compress it again with the Y axis as the compression axis. When the true strain in the Y direction reaches At 0.4, stop the compression and take out the sample for water quenching, then heat the sample to 400°C by electromagnetic induction, and compress again with the Z axis as the compression axis. Whe...

Embodiment 2

[0023] Take the Mg-12.8Gd-5.0Y-0.4Nd-1.2Zr (wt.%, mass percentage) alloy, apply an external constant pressure field, the pressure is 0.7GPa, the solution temperature is 530 ° C, the solution time is 24 hours, and the solution After completion, release the pressure and cool with 80°C hot water. Then heat the sample to 460°C by electromagnetic induction, place the sample on a hydraulic press, and carry out compression deformation with the X axis as the compression axis, and the strain rate is 10 -3 the s -1 ;When the true strain in the X direction reaches 0.6, stop the compression and take out the sample for water quenching, then heat the sample to 420°C by electromagnetic induction, and compress it again with the Y axis as the compression axis. When the true strain in the Y direction When it reaches 0.6, stop the compression and take out the sample for water quenching, then heat the sample to 380°C by electromagnetic induction, and compress again with the Z axis as the compres...

Embodiment 3

[0026] Take the Mg-7Y-4Gd-1.5Zn-0.4Zr (wt.%, mass percentage) alloy, apply an external field of equal pressure, the pressure is 1GPa, the solution temperature is 510°C, and the solution time is 12 hours. After the solution is completed, unload Remove the pressure and cool with 80°C hot water. Heat the sample to 450°C by electromagnetic induction, place the sample on a hydraulic press, and carry out compression deformation with the X axis as the compression axis, and the strain rate is 10 -3 the s -1 ;When the true strain in the X direction reaches 0.4, stop the compression and take out the sample for water quenching, then heat the sample to 420°C by electromagnetic induction, and compress again with the Y axis as the compression axis. When the true strain in the Y direction When it reaches 0.4, stop the compression and take out the sample for water quenching, then heat the sample to 390°C by electromagnetic induction, and compress again with the Z axis as the compression axis...

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Abstract

The invention discloses a rare earth magnesium alloy strengthening and toughening regulation and control method. The method comprises the following steps: (1) carrying out high-temperature solution treatment of an external pressure field on a target rare earth magnesium alloy; (2) the rare earth magnesium alloy component obtained after solution treatment is completed is subjected to cooling multi-pass multi-axis forging treatment; after each pass of forging is finished, the magnesium alloy is subjected to quenching treatment, and then electromagnetic induction heating is conducted to reheat the magnesium alloy to the temperature required by subsequent pass of forging; and (3) finally, the alloy is subjected to external stress and electrostatic field assisted aging heat treatment. Through regulation and control of the method, the strengthening and toughening degree of the rare earth magnesium alloy is improved, the tensile strength and the ductility are improved, the comprehensive performance is more excellent, and the use requirements are better met. Compared with a traditional treatment process (T5 and the like), the process is more detailed and comprehensive, and the mechanical property improvement effect of the rare earth magnesium alloy is more remarkable.

Description

technical field [0001] The invention relates to a strengthening and toughening control method of a rare earth magnesium alloy, which belongs to the technical field of magnesium alloy heat treatment. Background technique [0002] As a low-density metal structural material, magnesium alloy has the characteristics of high specific strength, high specific stiffness, excellent damping performance, and good electromagnetic shielding performance. It plays an increasingly significant role in the fields of aerospace, automotive lightweight and medical equipment. It is known as one of the green engineering materials in the 21st century. However, the mechanical properties of magnesium alloys such as strength and toughness sometimes cannot meet the needs of industrial production, which limits its application prospects. [0003] Selecting magnesium alloys with excellent comprehensive properties and carrying out reasonable processing technology is the key to improving the mechanical prop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/06C21D1/18B21J5/00C21D1/04C21D8/00C22C23/06
CPCC22F1/06C22F1/002B21J5/002C21D1/04C21D8/00C22C23/06C21D2241/01Y02P10/25
Inventor 马鸣龙张奎屈娟冯立帅李兴刚李永军石国梁袁家伟孙昭乾
Owner GRIMAT ENG INST CO LTD
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