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Alloy Strengthening Of Aluminum

wallpapers News 2021-01-22
Aluminum is a silver-white light metal. There is malleability. Commodities are often made into rods, sheets, foils, powders, ribbons and filaments. It can form an oxide film to prevent metal corrosion in humid air. Aluminum powder and aluminum foil can burn violently when heated in the air and emit a dazzling white flame.
 
Alloy strengthening of aluminum
 
The mechanical properties of pure aluminum are not high, so it is not suitable for making structural parts that can withstand larger loads. In order to improve the mechanical properties of aluminum, some alloying elements are added to pure aluminum to make alloys. The alloying elements often added are copper, magnesium, chromium, zinc, silicon, manganese, nickel, cobalt, titanium and strontium. These alloys are added. After these alloying elements are added, aluminum is strengthened through the following aspects.
 
1. Solid solution strengthening
Alloying elements are added to pure aluminum to form infinite solid solution or finite solid solution, which can not only obtain high strength, but also obtain excellent plasticity and good pressure processing performance. The most commonly used alloying elements for solid solution strengthening in general aluminum alloys are copper, magnesium, manganese, zinc, silicon, nickel and other elements. Generally, the alloying of aluminum forms a limited solid solution, such as Al-Cu, Al-Mg, Al-Zn, Al-Si, Al-Mn and other binary alloys all form a limited solid solution, and all have a large limit solubility. Great solid solution strengthening effect.
 
2. Time strengthening
After the aluminum alloy is heat treated, a supersaturated aluminum-based solid solution can be obtained. When this supersaturated aluminum-based solid solution is heated to a certain temperature at room temperature, its strength and hardness increase with time and extension, but its plasticity decreases. This process is called aging. The phenomenon of increasing the strength and hardness of the alloy during the aging process is called aging strengthening or age hardening.Aluminum is a silver-white light metal. There is malleability. Commodities are often made into rods, sheets, foils, powders, ribbons and filaments. It can form an oxide film to prevent metal corrosion in humid air. Aluminum powder and aluminum foil can burn violently when heated in the air and emit a dazzling white flame.
 


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