Introduction
The material of alloy - is one of the essential structures in modern technology which can be used in many fields. Among them, aluminum-silicon alloy is widely used in industrial production. Generally speaking, the primary structural element of aluminum-silicon alloy is Al (white) and Si (black). The Solid State Reactivity of Al and Si in Aluminum-Silicon Alloys is much higher than other alloys. The presented paper is an attempt to discuss the composition, structure, properties and production processes of aluminum-silicon alloy.
Composition
Aluminum-silicon alloy is composed of aluminum and silicon, with the corresponding weight percentage of silicon ranging from 5% to 45%. Usually it also contains other elements, such as iron, copper, zinc and magnesium. Aluminumsilicon alloy is due to the excellent performance of the two components, lower cost and stable microstructure, it has been widely used in the aviation industry and automobile industry, energy field and other various fields.
Structure
At room temperature, aluminum-silicon alloy is usually in solid state. The basic structure of aluminum-silicon alloy is generally composed of two phases: Al(white) and Si(black). The difference between the two phases is that Al has a larger lattice constant than Si, so Al can be easily dispersed in the Si matrix. The two phases are connected by a continuous crystal lattice, forming an intermetallic compound. This compound has good thermal stability, wear resistance and corrosion resistance, which makes it widely used in many industries.
Properties
Aluminum-silicon alloy has good properties of selected metal alloys. Firstly, the melting temperature of aluminum-silicon alloy is much higher than that of pure aluminum. It can also maintain good properties even in the high temperature environment. Secondly, the aluminum-silicon alloy has very high strength, low density and good plasticity. In addition, the aluminum-silicon alloy has good thermal stability and excellent anti-oxidation and corrosion-resistant properties.
Production process
The main production methods for aluminum-silicon alloy consist of two parts: molten casting and solid-state casting. The molten casting method is usually used for the production of complex shaped aluminum-silicon alloy, while the solid-state casting method is usually used for the production of simple shaped aluminum-silicon alloy. In addition, the aluminum-silicon alloy can also be produced by microwave energy, and the process is called powder metallurgy.
Conclusion
In conclusion, aluminum-silicon alloy has become an important material in many fields due to its excellent combination of properties, low cost and stable microstructure. The alloy is composed of Al(white) and Si(black), and it has a continuous crystal lattice structure. Aluminum-silicon alloy has good thermal stability, wear resistance, corrosion resistance, and so on. The main production methods of aluminum-silicon alloy are molten casting, solid-state casting, and powder metallurgy.
