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High-damping manganese-copper alloy for wide-temperature-range service and preparation method thereof

A technology of manganese-copper alloy and high damping, which is applied in the field of preparation methods of manganese-copper-based alloys with high performance, can solve the problems of unsatisfactory vibration and noise control requirements, unstable damping performance of manganese-copper alloy, complex alloy preparation process, etc., and achieve favorable The effect of micron-scale twinning movement, suitable dislocation slip, and simple preparation process

Active Publication Date: 2021-09-24
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Chinese patent CN201210491359.4 discloses a casting high-damping manganese-copper alloy material and its preparation method to solve the technical problem of unstable damping performance of the manganese-copper alloy. However, due to the addition of more rare earth and alkaline earth elements to the alloy, the alloy preparation The process is complicated and the cost is high
[0005] However, whether the damping alloy prepared by the above method is forged / rolled or cast, the room temperature damping performance tanδ is only 0.02-0.03
The damping performance of the alloy is poor in a wide temperature range from -20°C to 100°C, which can no longer meet the requirements of vibration and noise control under complex and extreme environmental conditions

Method used

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  • High-damping manganese-copper alloy for wide-temperature-range service and preparation method thereof
  • High-damping manganese-copper alloy for wide-temperature-range service and preparation method thereof
  • High-damping manganese-copper alloy for wide-temperature-range service and preparation method thereof

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Effect test

Embodiment 1

[0052] In this embodiment, a high-damping manganese-copper alloy for service in a wide temperature range, the mass percentage ratio of chemical elements is: Mn-15wt.%Cu-5wt.%Ni-2.5wt.%Fe-0.1wt .% Co.

[0053] A preparation method of the high-damping manganese-copper alloy used in this embodiment for service in a wide temperature range, comprising the following steps:

[0054] (1) Raw material preparation and master alloy material preparation:

[0055] Weigh the raw materials according to the proportion of alloy elements by weight percentage: 15wt.% Cu, 5wt.% Ni, 2.5wt.% Fe, 0.1wt.% Co, the balance is Mn, put the raw materials in a crucible, and place them in a vacuum induction Melt in the smelting furnace, pass through the argon protective atmosphere during the melting, induction heating to 1350 ℃, keep warm for 30 minutes, so that the raw materials are fully melted, and then cast and solidify the casting master alloy ingot to obtain the cast manganese-copper-based alloy;

...

Embodiment 2

[0063] This embodiment is basically the same as Embodiment 1, especially in that:

[0064] In this embodiment, a high-damping manganese-copper alloy for service in a wide temperature range has a mass percentage ratio of chemical elements: Mn-20wt.%Cu-4.5wt.%Ni-0.5wt.%Co.

[0065] A preparation method of the high-damping manganese-copper alloy used in this embodiment for service in a wide temperature range, comprising the following steps:

[0066] (1) Raw material preparation and master alloy material preparation:

[0067] Weigh the raw materials according to the proportion by weight of the alloy elements: 20wt.% Cu, 4.5wt.% Ni, 0.5wt.% Co, and the balance is Mn. Put the raw materials in a crucible and melt them in a vacuum induction melting furnace. During the melting period, a protective atmosphere of argon gas is introduced, induction heating is carried out to 1350°C, and the temperature is kept for 30 minutes to fully melt the raw materials, and then cast and solidify the ...

Embodiment 3

[0075] This embodiment is basically the same as the previous embodiment, and the special features are:

[0076] In this embodiment, a high-damping manganese-copper alloy used for service in a wide temperature range, its chemical element mass percentage ratio is: Mn-20wt.%Cu-3wt.%Ni-1.5wt.%Zn-0.5wt .%Co-1.0wt.%Sn.

[0077] A preparation method of the high-damping manganese-copper alloy used in this embodiment for wide temperature range service, comprising the following steps:

[0078] (1) Raw material preparation and master alloy material preparation:

[0079] Weigh the raw materials according to the proportion of alloy elements by weight: 20wt.% Cu, 3wt.% Ni, 1.5wt.% Zn, 0.5wt.% Co, 1.0wt.% Sn, the balance is Mn, put the raw materials in the crucible Put it in a vacuum induction melting furnace and melt it. During the melting period, argon protective atmosphere is introduced, induction heated to 1350 ° C, and kept for 40 minutes, so that the raw materials are fully melted, a...

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Abstract

The invention discloses a high-damping manganese-copper alloy for wide-temperature-range service and a preparation method thereof. The high-damping manganese-copper alloy comprises the following chemical elements of, in percentage by mass, 15wt.%-25wt.% of Cu; 1wt.-5wt.% of Ni; 0.1wt.%-1.5wt.% of Co; 0wt.%-2.5wt.% of Fe; 0wt.%-1.5wt.% of Zn; 0wt.%-1.0wt.% of Sn; and the balance Mn and other inevitable impurities. According to the method, a directional solidification technology is used for being combined with a high-temperature magnetic field heat treatment technology, so that the damping performance of the alloy within the service temperature range is remarkably improved, and martensite twin crystals high in movement capacity and high-density dislocation good in mobility are induced to be formed through the amplitude modulation decomposition effect of chemical components in the high-temperature aging process, so that the purpose of preparing the high-damping manganese-copper-based alloy is achieved; the damping alloy is simple in preparation technology and high in production efficiency, the alloy system does not contain precious alloy elements, and the production cost is low.

Description

technical field [0001] The invention relates to a method for preparing a manganin-copper-based alloy with excellent environmental adaptability and high damping performance, in particular to a process of directional solidification combined with magnetic field heat treatment to maintain high damping performance in the temperature range of -20-100°C. The method of the manganin-copper alloy, the alloy prepared by the invention can be widely used in vibration reduction and noise reduction in aerospace, marine engineering, transportation and other aspects. Background technique [0002] Rubber and its products are a very good damping material, which can effectively eliminate or reduce the transmission of mechanical vibration, achieve shock absorption, noise reduction and reduce the impact caused by the impact, in the extreme environment of the temperature range from -20°C to 100°C However, this kind of polymer material is easy to age during the cold and hot cycle from low temperatu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C22/00C22C1/03C22F1/16C22F3/02
CPCC22C22/00C22C1/03C22F1/16C22F1/002C22F3/02
Inventor 田青超张思斌
Owner SHANGHAI UNIV
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