5052 Aluminum alloy belongs to Al-Mg series alloy, with a wide range of use, especially in the construction industry can not leave this alloy, which is the most promising alloy.Excellent weldability, good cold processing, can not be strengthened by heat treatment, in the semi-cold hardening plasticity is good, cold hardening plasticity is low, can be polished, and has medium strength.The main alloy element of 5052 aluminum alloy is magnesium, which has good forming performance, corrosion resistance, weldability, moderate strength. It is used to manufacture aircraft fuel tank, oil pipe, sheet metal parts of transportation vehicles, ships, instruments, street lamp support and rivets, hardware products, electrical shell, etc.

Aluminum alloy has excellent properties, mainly including the following aspects:

（1） Forming property

The thermal state process of the alloy has good plasticity. Forging and die forging temperatures from 420 to 475 C, performing thermal deformation with deformation> 80% in this temperature range. The cold stamping performance is related to the alloy state, the cold stamping performance of the annealing (O) state is good, the H32 and H34 state is second, and the H36 / H38 state is not good.

（2）Welding performance

The performance of gas welding, arc welding, resistance welding, spot welding and seam welding of this alloy are good, and the crystal crack tendency appears in two argon arc welding. The brazing performance is still good, while the soft brazing performance is poor. The weld strength and plasticity are high, and the weld strength reaches 90%~95% of the matrix metal strength. But the air tightness of the weld is not high.

（3） Machining property

The cutting performance of the alloy annealing state is not good, while the cold hardening state is improved. Excellent weldability, good cold machining, and moderate strength.

5052 Aluminum alloy commonly used heat treatment process name and characteristics

1. natural aging 

Natural aging refers to the 5052 aluminum alloy material in the air under room temperature conditions, so that its organization and performance change. The natural aging process is simple, the cost is low, but the time is longer, generally need several days to several weeks.

2.Artificial aging

Artificial aging refers to the 5052 aluminum alloy material after solid solution treatment at a certain temperature, in order to speed up the evolution of the tissue and achieve the required performance. The time of manual aging is relatively short, generally between a few hours and several days.

3.Solid solution + natural aging

Solid solution + natural aging is the 5052 aluminum alloy material first solid solution treatment, and then the natural aging under room temperature conditions. This process gives a better material strength and toughness, but it takes a longer time.

4.Solid solution + manual aging

Solid solution + manual aging is to treat 5052 aluminum alloy material after solid solution treatment, at a certain temperature, to accelerate the evolution of tissue and the improvement of performance. This process has a relatively short time and is suitable for high requirements on material performance.

5.Auxiliary limitation

Auxiliary aging refers to the further adjustment of the organization and performance of 5052 aluminum alloy material through further heat treatment process after the completion of solid solution + manual aging to meet the specific engineering requirements

6.Aging after rapid cooling:

Rapid post-cooling aging is a new heat treatment process, which quickly cools the 5052 aluminum alloy material to a lower temperature after solid solution treatment, and conducts aging treatment at this temperature. This process can significantly improve the strength and hardness of the material, while maintaining good plasticity and toughness. The aging process after rapid cooling is suitable for the occasions with high strength requirements, such as the structural parts in the aerospace field and the body parts in the automotive manufacturing field.

7.Intermittent statute of limitations

Intermittent aging is to keep the 5052 aluminum alloy material warm at a high temperature for a period of time after solid solution treatment, and then quickly cooled to a low temperature for aging treatment. This process can effectively control the strength and plasticity of the material, so that it meets the ideal performance requirements, suitable for the field of strict material performance requirements.

8.Multiple statute of limitations

Multiple aging refers to the 5052 aluminum alloy material after solid solution treatment and one aging treatment again. This process can further refine the organizational structure of the material and improve its strength and toughness, which is suitable for areas with extremely high material performance requirements, such as aero-engine parts and high-speed train body structure.

5052 Aluminum alloy use:

1.Aerospace field:5052 aluminum alloy has the characteristics of light weight, high strength, corrosion resistance and so on, so it is widely used in the field of aerospace.

2.automobile making:5052 aluminum alloy is also widely used in the field of automotive manufacturing.5052 Aluminum alloy has excellent corrosion resistance and good forming properties, and can be processed into various shapes through cold heading, machining, welding and other processes. In automobile manufacturing, 5052 aluminum alloy is commonly used in automobile body plate, door plate, hood and other structural parts, which can reduce the weight of the vehicle, improve fuel economy and driving performance.

3.shipbuilding:5052 Aluminum alloy has good corrosion resistance and seawater corrosion resistance, so it is widely used in the field of ship manufacturing. Large ship such as passenger ship, cargo ship and small ship such as speed boat, yacht, etc., can use 5052 aluminum alloy to make hull, cabin, flying bridge and other parts, in order to improve the navigation performance and life of the ship.

4.Petrochemical industry field:5052 Aluminum alloy is widely used in the field of petrochemical industry due to its good corrosion resistance. In the fields of oil and natural gas, 5052 aluminum alloy is often used in the manufacture of storage tanks, pipelines, heat exchanger and other equipment. At the same time, 5052 aluminum alloy can also be processed into various shapes of pipes and connections through welding, drilling, thread processing and other processes, to improve the corrosion resistance of petrochemical equipment.

5.Home appliance manufacturing:5052 aluminum alloy is widely used in the field of home appliance manufacturing.5052 Aluminum alloy is often used in manufacturing TV backplane, computer radiator, refrigerator door, air conditioner shell, etc. Home appliances made with 5052 aluminum alloy are not only beautiful in appearance, but also have good heat dissipation performance and corrosion resistance.

In short, 5052 aluminum alloy has become an important aluminum alloy material because of its excellent performance and wide application fields. Whether in aerospace, automobile manufacturing, shipbuilding, petrochemical or home appliance manufacturing fields, have an important position and role. With the continuous progress of science and technology and the increasing demand, the application prospect of 5052 aluminum alloy in various fields will be broader.