Aluminum Matrix Composites And Aviation Mechanical Analysis

Aluminum composite material has excellent mechanical physical properties and small density widely used in aviation manufacturing. In the preparation process easy reunion performance characteristics impede the growth of CNTs. This paper focuses on milling,sintering, hot pressing and extrusion by mechanical methods. To prepare the carbon nanotubes（CNTs） and alumina（Al₂O₃） particles as composite reinforced with aluminum（Al） matrix composites, while preparing to complete aluminum-based composite materials, mechanical properties, interfacial bonding and strengthening mechanisms.On this basis, in this paper to determine the content of CNTs was 1.5wt.%, by increasing the amount of Al₂O₃ particles were prepared composite reinforced aluminum matrix composites, focusing on the content of Al₂O₃.The results show that: for 1.5wt.% CNTs/ Al composites with optimized milling speed 500 rpm, without adding process control agent under the conditions, with the increase of milling time, the prepared composite organization is more dense, hardness and tensile for increasing the intensity to determine the optimum milling time was 180 min, the resulting composite is 2.4 times the hardness of aluminum, the same as after the milling time CNTs / Al composites 1.6 times with increasing content of Al₂O₃ composites hardness rising, both in the Al₂O₃ content of 3wt.% and reached the highest point hardness HV112.1, 2.8 times as aluminum.Since the interfacial reaction of aluminum matrix composites, the preparation is completed, it will contain some Al4C3 nanoparticles, has great hardness value, so with CNTs and Al₂O₃ nanoparticles joined, Al4C3 will form a reinforced composite material hardness effect. High-energy ball milling process can promote CNTs and Al₂O₃ nanoparticles dispersed on the Al matrix. This preparation method can also be applied to the other matrix composite materials, such as ceramic or a composite matrix material.