Application of aluminum alloy

The aluminum alloy made of aluminum as the main material and other metals is added. It has many excellent properties such as lightness, environmental protection, and corrosion resistance. It provides us with various conveniences. Aluminum, known as green metal, has good recycling characteristics.

In the development and utilization of new energy, aluminum is even more indispensable. Products made of aluminum and aluminum alloys through casting, forging, extrusion and rolling are widely used.

From high-speed rail carriages to ships, from military to civilian use, the use of aluminum alloys continues to increase. Every 1 kg reduction in the weight of a spacecraft entering space orbit will save more than 100,000 dollars in launch costs.

Energy saving and weight reduction are calculated in grams in the aerospace field. The aerospace field has become an important application market for aluminum alloy materials. Automotive engines, wheels, car bodies, high-speed rail bodies, mechanical equipment and electrical equipment, and daily necessities are all made of aluminum alloys. In order to meet the requirements of lightweight.

Aluminum alloy is a general term for alloys with aluminum as the main material. The main alloy elements are copper, silicon, magnesium, zinc, etc. Aluminum alloy has the advantages of corrosion resistance, easy processing, high strength and low density.

Aluminum alloy has corrosion resistance, which is impossible for many metals. Because there is a hard film on the surface of aluminum alloy, this film covers the surface of aluminum alloy and isolates aluminum alloy from oxygen. As time goes by, this The layer of film will continue to thicken, and if this layer of film is damaged, a protective film will be regrown, making its aluminum products have good corrosion resistance. Of course, later surface treatment is required to make the aluminum alloy more corrosion-resistant.

The disadvantage of aluminum alloy is also obvious, that is, it is too brittle. Now scientists have developed a new type of aluminum alloy material. This disadvantage of aluminum alloy is being changed. By introducing "faults" in the crystal structure of the metal, it can greatly improve Material strength. In addition to making the new aluminum alloy material as strong as stainless steel, this property can also be used for corrosion-resistant coatings.

From a microscopic perspective, metals are composed of crystal atoms that are repeatedly stacked layer by layer. When a certain layer is missing, the stack will collapse and break. What is interesting is that these stacked faults can make the strength of the material become stronger. Higher, this feature is introduced into the new aluminum material, while increasing the strength and ductility of the material, it also improves its thermal stability. The new product is expected to be applied in the corrosion-resistant coating of electronic equipment and vehicles.