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

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...

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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 dispersion, and fracture toughness. Lower problems

The methods for preparing metal multilayer film structures mainly include sputtering, spray deposition, electroplating, etc., but these methods have the disadvantages of complex equipment, high price, and long material preparation cycle, which limits the preparation of engineering structural materials.

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