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High-damping Mg-based damping alloy and preparation method thereof

A vibration-damping alloy and alloy material technology is applied in the field of alloy materials to achieve the effects of easy-to-obtain equipment and simple methods

Active Publication Date: 2014-08-13
曹帅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to seriously affecting the reliability and service life of equipment and machinery, vibration and noise also seriously endanger people's physical and mental health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] A high damping magnesium-based vibration damping alloy, the alloy comprises the following components according to weight percentage: Cu: 1%, Mn: 1.5%, Zn: 1.8%, Si: 1.2%, Ti: 0.2%, Mg is The remainder, the sum of each component is 100%. Induction smelting is carried out by means of argon protection, followed by casting. The alloy material was solution-treated at 350°C for 4 hours, and then water quenched to room temperature. The aging temperature is 135 degrees, the heat preservation is 26 hours, and the high-strength and high-damping alloy material is obtained by air cooling to room temperature.

Embodiment 2

[0012] A high damping magnesium-based vibration-damping alloy, the alloy comprises the following components according to weight percentage: Cu: 1.2%, Mn: 1.8%, Zn: 1.4%, Si: 1.6%, Ti: 0.3%, Mg is The remainder, the sum of each component is 100%. The smelting method is carried out in an argon atmosphere, and then the casting is carried out. The alloy material was solution-treated at 380°C for 5 hours, and then water quenched to room temperature. The aging temperature is 170 degrees, the heat preservation is 28 hours, and the high-strength and high-damping alloy material is obtained by air cooling to room temperature. The tensile strength of the material is 415MPa, the yield strength is 280MPa, the elongation is 9%, and the damping performance (SDC) can reach 51%.

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Abstract

The invention discloses a high-damping Mg-based damping alloy and a preparation method thereof. The alloy comprises 1-5% of Cu, 1-3% of Mn, 1-4% of Zn, 1-2% of Si, 0.1-0.5% of Ti, and the balance Fe. The method comprises the following steps: carrying out solid solution treatment on a melted alloy material at 300-400DEG C, carrying out heat insulation for 3-6h, carrying out water quenching to room temperature, ageing at 120-190DEG C, carrying out heat insulation for 25-30h, and carrying out air cooling to room temperature in order to obtain the Mg-based damping alloy. Melting in protection atmosphere is carried out, then casting is carried out, and finally heat treatment is carried out. The Mg-based damping alloy obtained in the invention can successfully solve the contradiction of the strength and the damping performance of a magnesium alloy, has the advantages of simple method and easily available equipment, and is suitable for large-scale industrial production. Ti, Mn and Cu are introduced on the basis of alloy element kind and content optimization in order to realize solid solution reinforcement and precipitation reinforcement. The orientation of a precipitated phase is adjusted by refining the crystal grain size in order to increase the strength and the plasticity of the above material. The tensile strength, the yield strength and the elongation of the Mg-based damping alloy are 360-420MPa, 260-290MPa and ~9% respectively. The magnesium alloy obtained in the invention can be obtained through routine casting molding, and the specific damping capacity of the magnesium alloy can reach 46-54%.

Description

technical field [0001] The invention relates to an alloy material, in particular to a high-damping magnesium-based vibration-damping alloy and a preparation method thereof. Background technique [0002] The vibration and noise problems caused by the rapid development of modern industry and transportation have become more and more prominent. In addition to seriously affecting the reliability and service life of equipment and machinery, vibration and noise also seriously endanger people's physical and mental health. Vibration and noise reduction is an important problem to be solved urgently in modern industry and environmental engineering. The damping alloy can convert the vibration energy into heat energy through the friction inside the alloy and dissipate it, so as to achieve the effect of vibration reduction and noise reduction. Magnesium alloy is currently the structural material with the smallest application density, and has irreplaceable properties of aluminum and stee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/04C22C23/00C22F1/06
Inventor 刘亚军曹贺全曹帅郭强
Owner 曹帅
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