A kind of reinforced lightweight metal matrix composite material based on mn-cu alloy and its preparation method

A composite material and metal-based technology, applied in metal rolling and other directions, can solve the problems of poor bonding between the metal matrix and the particle interface, long material preparation period, uneven particle dispersion, etc. , Overcome the effect of complex equipment

Active Publication Date: 2019-11-22
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] So far, the methods for preparing particle-dispersed composite materials mainly include powder metallurgy methods, casting molding methods, etc., but research has found that the composite materials prepared by the above methods have problems such as poor bonding between the metal matrix and the particle interface, uneven particle dispersi

Method used

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  • A kind of reinforced lightweight metal matrix composite material based on mn-cu alloy and its preparation method
  • A kind of reinforced lightweight metal matrix composite material based on mn-cu alloy and its preparation method
  • A kind of reinforced lightweight metal matrix composite material based on mn-cu alloy and its preparation method

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Embodiment 1

[0034] This embodiment provides a method for preparing a reinforced Al-based lightweight high-damping composite material based on Mn-Cu alloy, such as figure 1 shown, including the following steps:

[0035] Step 1: Surface treating the Al substrate to remove surface metal oxides to obtain a metal substrate to be processed;

[0036] Step 2: Disperse the Mn-Cu alloy particles in deionized water, and then uniformly precipitate on the surface of the metal substrate in step 1, and then cover the metal substrate in step 1 to obtain the alternate layered arrangement of Mn-Cu alloy and the metal substrate in step 1 Composite substrate; wherein, the size of the Mn-Cu alloy particles is 1um-1000um, the thickness of the single-layer metal substrate is 1um-10cm, and the total mass of the Mn-Cu alloy accounts for 50% of the total mass of the entire composite substrate;

[0037] Step 3: The composite substrate in step 2 is cumulatively rolled and welded by hot rolling to obtain a particle-di...

Embodiment 2

[0044] This embodiment provides a method for preparing a reinforced Al-based lightweight high-damping composite material based on Mn-Cu alloy, such as figure 2 shown, including the following steps:

[0045] Step 1: Surface treating the Al substrate to remove surface metal oxides to obtain a metal substrate to be processed;

[0046] Step 2: surface-treat the Mn-Cu alloy sheet to remove the surface metal oxide, and then alternately stack it with the metal sheet of step 1, stacking 20 layers in total to obtain a composite substrate; wherein, the single-layer Mn-Cu alloy The thickness of the plate is 10nm-100um, the thickness of the single-layer metal substrate is 1um-10cm, and the total mass of the Mn-Cu alloy accounts for 30% of the total mass of the entire composite substrate;

[0047] Step 3: The composite substrate in step 2 is rolled and welded by hot rolling to obtain a particle-dispersed composite sheet or a composite sheet with a layered structure, wherein the hot rolli...

Embodiment 3

[0051] This embodiment provides a method for preparing a reinforced Mg-based lightweight high-damping composite material based on Mn-Cu alloy, wherein the lightweight substrate is a magnesium alloy foam substrate, and the number of stacked layers is 2 layers. Rolling method is carried out by rolling welding, the hot rolling temperature is 600°C, the cumulative number of rolling welding is 20 times, and intermittent annealing treatment at 200°C is carried out between each double rolling, and other steps are the same as in Example 1.

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Abstract

The invention discloses an enhanced light metal base composite based on a Mn-Cu alloy and a preparing method of the enhanced light metal base composite. The composite is prepared and obtained in the manner that Mn-Cu alloy particles and a light metal base plate are subjected to interlayer welding through an accumulative roll-bonding method, or a Mn-Cu alloy panel and the light metal base plate are subjected to interlayer welding through the accumulative roll-bonding method. Through a large amount of experiment work, the accumulative roll-bonding method is applied to preparing of the Mn-Cu enhanced light metal base composite for the first time, the damping performance and mechanical performance of the light metal base damping material at the temperature near the room temperature are greatly improved, the requirement for the structural material in the near-room-temperature vibration reducing and noise lowering applying field can be well met, and the enhanced light metal base composite is particularly applicable to the space flight and aviation field and other high technology fields requiring the low density and high performance.

Description

technical field [0001] The invention relates to a lightweight metal-based high-damping composite material and a preparation method thereof, in particular to a reinforced light-weight metal-based composite material based on Mn-Cu alloy and a preparation method thereof. Background technique [0002] The failure analysis results of rockets and satellites show that about two-thirds of failures are related to vibration and noise. Various instruments and meters on aerospace vehicles and ships often fail because of this; during the long-term use of aircraft, due to the influence of vibration, problems such as cracks in the rudder and tail cover, cracks in the pitot tube, and noise in the cockpit often occur. . Therefore, it is of great significance to develop structural materials with high damping properties. The development of the modern aerospace industry requires metal structural materials to have good mechanical and damping properties at the same time, so as to improve the op...

Claims

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Application Information

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IPC IPC(8): B21B3/00B22F7/04
CPCB21B3/00B21B2003/005B22F7/04
Inventor 郑薇高云霞王先平曾龙飞方前锋
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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