Aluminum-base carbon nanotube reinforced composite material and manufacturing method

Abstract

The invention relates to an aluminum-base carbon nanotube reinforced composite material and a manufacturing method. The aluminum-base carbon nanotube reinforced composite material and the manufacturing method are applied to production of moving ring forged piece blanks of automatic inclinometers of helicopters. Carbon nanotubes generally have a problem that the strength upper limit is limited. Aconventional aluminum-base composite material manufacturing method has the defects that lots of microcosmic pores exist, interface bonding is poor, and the follow-up forging requirements cannot be met. The aluminum-base carbon nanotube reinforced composite material comprises, by mass percentage, 0.1%-5% of carbon nanotubes, 3.2%-4.4% of Cu, 1.0%-1.9% of Mg, 0.25%-0.3% of Si, 0.2%-0.4% of Fe, 0.1%-0.2% of Zn, 0%-0.3% of O and the balance Al. The uniform dispersion is good, and the residue of dispersing agents and the introduction of oxide impurities are avoided. The pores can be completely eliminated, and the defect quantity is quite low. The requirement for the higher strength is met, and the manufacturing efficiency is high.

Description

technical field [0001] The invention relates to an aluminum-based carbon nanotube-reinforced composite material and a preparation method thereof, which are used in the production of forging blanks of moving rings of helicopter autotilt gauges. Background technique [0002] The autoclinometer is one of the core components of the helicopter. The moving ring part puts forward high requirements on the strength, weight and wear resistance of the material. The traditional aluminum alloy has been difficult to meet the requirements, and the cost of the titanium alloy material is too high and the weight is too large. , not wear-resistant, aluminum matrix composites become the first choice. Carbon nanotube-reinforced aluminum matrix composites have advantages in strength, weight and cost, and are very suitable for manufacturing dynamic ring forging blanks, but there is generally a problem of limited upper limit of strength. Traditional aluminum matrix composite preparation methods su...

AI Technical Summary

Problems solved by technology

Traditional aluminum matrix composite preparation methods such as hot isostatic pressing sintering and other technologies have to add dispersants when mixing materials, and the obtained materials have many defects such as microscopic pores and poor interface bonding, which cannot meet the subsequent forging requirements; casting methods The prepared aluminum-based composite also has many defects such as casting pores and segregation, and cannot be used for forging blanks, which cannot meet the requirements of use