An alloy based on aluminum with a certain amount of other alloying elements added is one of the light metal materials. In addition to the general characteristics of aluminum, aluminum alloys also have some specific characteristics of alloys due to the different types and quantities of alloying elements added. The density of aluminum alloy is 2.63～2.85g/cm3, with high strength (σb is 110～650MPa), the specific strength is close to that of high alloy steel, the specific stiffness exceeds that of steel, it has good casting properties and plastic workability, and good electrical conductivity , thermal conductivity, good corrosion resistance and weldability, can be used as a structural material, and has a wide range of applications in aerospace, aviation, transportation, construction, electromechanical, light and daily necessities.
The main alloying elements in the commonly used anti-rust aluminum alloys are manganese and magnesium. Adding manganese can improve its corrosion resistance, adding magnesium to strengthen it and reduce its specific gravity. It is characterized by corrosion resistance, good polishability, and can maintain a bright surface for a long time. The strength is higher than that of pure aluminum, and it is mostly used in the manufacture of parts, pipes, daily necessities, decorations, etc. that are in contact with liquids. Duralumin, also known as duralumin, is an alloy of aluminum, copper, and magnesium, and contains a small amount of manganese. Copper and magnesium are more soluble in aluminum and have a strengthening effect, and manganese makes them resistant to corrosion. Hard aluminum can be used to manufacture rivets, aircraft propellers and high-strength parts on aircraft according to the content of its alloying elements; super hard aluminum is hard aluminum containing zinc, and its hardness and strength are higher than that of hard aluminum. Different varieties of super hard aluminum It is used to manufacture various structural parts and high-load parts, and is one of the important materials in the aviation industry; forged aluminum has high plasticity and high strength under normal conditions, and is used to manufacture various forgings or stamping parts, such as internal combustion engine pistons, etc.; Special aluminum is used in specific situations, with different components, and each has its own purpose.
Aluminum alloy has the characteristics of low density, good mechanical properties, good processing performance, non-toxicity, easy recycling, electrical conductivity, heat transfer and corrosion resistance, etc. It is widely used in marine industry, chemical industry, aerospace, metal packaging, transportation, etc. widely used in the field.
Aerospace
Aluminum has good thermal conductivity, and aluminum and aluminum alloys are widely used in the production of heat exchange equipment in chemical equipment, storage tanks against concentrated nitric acid corrosion, adsorption filters, fractionation towers, pipelines and many linings. Casting aluminum alloy has good fluidity, strong filling ability, small shrinkage, not easy to form cracks, good corrosion resistance (the surface can form aluminum oxide and silicon dioxide protective film), light weight, good mechanical properties, and excellent mechanical properties. It is widely used in the manufacture of corrosion-resistant parts with complex structures, such as cylinders, pipe fittings, valves, pumps, pistons, etc. Aluminum has many special uses in chemical production [7]. Aluminum does not produce sparks, and aluminum alloys can be used to produce containers containing volatile substances; aluminum is non-toxic, does not cause food deterioration, does not affect the appearance of goods, and does not corrode goods. Therefore, aluminum alloys are widely used in the production of food and chemical industries related to equipment.
Hard aluminum can be used to manufacture rivets, aircraft propellers and high-strength parts on aircraft according to the content of its alloying elements; super hard aluminum is a hard aluminum containing zinc, and its hardness and strength are higher than that of hard aluminum. Different varieties of super hard aluminum It is used to manufacture various structural parts and high-load parts, and is one of the important materials in the aviation industry.
