High-damping Mn-Cu based damping alloy and preparing method thereof

A damping alloy, mn-cu technology, applied in the field of alloy materials, to achieve the effect of improving corrosion resistance, adjusting strength and toughness, and low cost

Active Publication Date: 2014-08-06
NINGBO SYRNMA METAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention provides a formula and process of a novel Mn-Cu-based damping material for the existing M

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0012] Example 1:

[0013] A Mn-Cu based vibration-damping alloy, said alloy comprising the following components in weight percentages: Mn: 70%, Cu: 12%, Al: 9%, Fe: 3.5%, Zn: 5%, Th: 0.5%. The raw materials are melted in a vacuum induction furnace and heated to 1400-1500 degrees to form an alloy liquid. The alloy liquid is fully stirred at this temperature for 10 minutes and then cast into the corresponding castings. The obtained castings undergo 50% experience at 720 degrees After the hot forging deformation, annealed at 700 degrees for 2 hours, and then placed in a 350 degrees heat treatment furnace for 1 hour, and then taken out to obtain the required high damping alloy material. The damping system of the material obtained is SDC: 42%, breaking strength: 620MPa, elongation: 34%.

Example Embodiment

[0014] Example 2:

[0015] A Mn-Cu-based vibration-damping alloy, said alloy comprising the following components in weight percentages: Mn: 75%, Cu: 16%, Al: 5%, Fe: 1%, Zn: 2.8%, Th: 0.2%. The raw materials are melted in a vacuum induction furnace and heated to 1400-1500 degrees to form an alloy liquid. After the alloy liquid is fully stirred at this temperature for 10 minutes, the corresponding castings can be cast. The obtained castings undergo 50% of 750 degrees After the hot forging deformation, annealed at 700 degrees for 2 hours, and then placed in a 350 degrees heat treatment furnace for 1 hour, and then taken out to obtain the required high damping alloy material. The damping system of the material obtained is SDC: 45%, breaking strength: 660MPa, elongation: 31%.

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Abstract

The invention discloses a high-damping Mn-Cu based damping alloy and a preparing method thereof. The Mn-Cu based damping alloy consists of the following ingredients in percent by weight: 70-80% of Mn, 10-20% of Cu, 5-10% of Al, 1-5% of Fe, 1-5% of Zn and 0.2-0.5% of Th. The preparing method comprises the following steps: putting raw materials in a vacuum induction furnace, melting, and heating to 1400-1500 DEG C to form melt alloy; fully agitating the melt alloy at the temperature for ten minutes, and casting into a corresponding casting; carrying out 50% thermal forging deformation on the obtained casting at a temperature from 700 DEG C to 800DEG C, then annealing at the temperature of 700DEG C for 2 hours, putting in a thermal treatment furnace of 350DEG C, preserving heat for 1 hour and taking out to obtain the Mn-Cu based damping alloy. The damping coefficient of the cast material is larger than 40%, the breaking strength is not smaller than 600MPa, and the elongation rate is not smaller than 30%. After simple thermal treatment, the high-damping Mn-Cu based damping alloy can be widely applied in various high-speed running equipment for effectively reducing vibration and noise.

Description

technical field [0001] The invention relates to an alloy material, in particular to a high-damping Mn-Cu-based vibration-damping alloy and a preparation method thereof. Background technique [0002] Damping alloy is a new type of metal functional material, which can convert vibration energy into heat energy and dissipate it through the friction inside the alloy, so as to achieve the effect of vibration and noise reduction. Mn-Cu based damping alloy not only has high internal friction (SDC: ~40%), and has high mechanical strength. The concentrated grades of materials developed so far can be directly applied to the vibration damping part of the mechanical vibration, which can not only achieve the purpose of vibration and noise reduction, but also effectively improve the accuracy of the instrument and the reliability of the mechanical parts. Due to its excellent damping performance, manganese-copper-based damping alloys have broad development prospects and inestimable demand i...

Claims

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Application Information

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IPC IPC(8): C22C22/00C22C1/02
Inventor 刘亚军曹贺全曹帅郭强
Owner NINGBO SYRNMA METAL MATERIALS CO LTD
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