Pure aluminum after adding metals

Adding another metal into pure aluminum changes its structure and properties, making it suitable for various processing materials or casting materials.
Copper, magnesium, zinc, silicon, and manganese, these metal elements are added to aluminum to make it an aluminum alloy The mechanical strength of the aluminum alloy is greatly improved compared to that of pure aluminum. The solubility of these alloy elements in solid aluminum is generally limited, and changes with temperature. The metal elements dissolve in aluminum to form an aluminum-based solid solution.

In most cases, the solubility of alloying elements in solid aluminum increases with increasing temperature and decreases with decreasing temperature.
Different heat treatment systems can be used to change its properties.

The strength and hardness of the quenching aging process are increased. This is called strengthening.
Heating to soften the cold-hardened steel is called annealing.
When a solid solution alloy is formed, it is beneficial for pressure processing and forging.
Alloying elements or compounds form eutectics with aluminum, which can improve the fluidity of the alloy and facilitate casting.

According to industrial needs, adding different elements to aluminum can make aluminum alloys with different characteristics.
Such as high-strength aluminum alloys, corrosion-resistant aluminum alloys, heat-resistant aluminum alloys, forged aluminum alloys, etc.
Therefore, aluminum and aluminum alloys have been widely used in industry.