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- T6 Aluminum Sheet
- T6 aluminum sheets are produced through solution heat treatment and artificial aging, resulting in high-strength, high-hardness aluminum alloy sheets with excellent machinability. They are widely used in aerospace, automotive, and machinery manufacturing industries.
The T6 temper indicates that the aluminum alloy has undergone solution heat treatment and artificial aging, achieving a state of high strength and high hardness.
Process flow:
Solution heat treatment: The aluminum alloy is heated to a high temperature (usually between 465°C and 565°C, depending on the alloy) and held for a period of time. This allows the strengthening elements (such as magnesium, silicon, and copper) in the alloy to dissolve to the maximum extent into the aluminum matrix, forming a homogeneous, supersaturated solid solution.
Rapid cooling: The workpiece after solution heat treatment is rapidly cooled (usually water-cooled, sometimes air-cooled) to obtain an unstable, supersaturated solid solution structure.
Artificial aging: The quenched workpiece is reheated to a lower temperature (typically between 150°C and 250°C) and held for a period of time. This causes the strengthening elements in the supersaturated solid solution to precipitate as fine, dispersed particles. These particles effectively hinder the movement of lattice dislocations, thereby greatly improving the strength and hardness of the alloy.
Characteristics of t6 aluminium sheets:
- High strength and high hardness:
T6 temper aluminum sheets possess excellent mechanical properties, with high tensile strength and yield strength, meeting the requirements of high-strength structural components.
- Good machinability:
Despite its high strength and hardness, T6 temper aluminum sheets maintain good machinability, allowing for various forming methods such as stamping, stretching, and bending, with excellent machined surface finish.
- Corrosion resistance:
T6 temper aluminium sheets exhibit good corrosion resistance, maintaining stable performance even in harsh environments.
- Toughness:
Compared to the T5 temper, T6 temper aluminum sheets achieve high strength while retaining a certain degree of toughness, making them less prone to brittle fracture.
Common alloys of t6 aluminum sheets:
- 6061 t6 aluminum sheet:
6061 aluminum alloy, after T6 tempering, possesses medium strength, good corrosion resistance, weldability, and oxidation resistance, making it one of the most widely used T6 tempered aluminum sheets.
- 7075 t6 aluminum sheet:
7075 aluminum alloy is a high-strength aluminum alloy. After T6 tempering, its strength is further enhanced, making it suitable for applications requiring higher strength.
- 2024 t6 aluminum sheet:
2024 aluminum alloy is also a high-strength aluminum alloy. After T6 tempering, it possesses good mechanical and machinability properties and is widely used in the aerospace industry.
Application areas of t6 aluminium sheets:
- Aerospace:
T6 tempered aluminum sheets are widely used in aircraft structural components and aerospace parts. Their high strength and lightweight characteristics help reduce aircraft weight and improve flight performance.
- Automotive:
In automobile manufacturing, T6 tempered aluminum sheets are used to manufacture high-strength mechanical parts and car frames, contributing to improved vehicle safety and durability.
Machinery manufacturing field:
T6 temper aluminum sheets are also widely used in machinery manufacturing, such as in the manufacture of robot arms, high-performance bicycle frames, and ship components. Their high strength and good machinability meet the requirements of complex structural parts.
Differences between T6 and T651 aluminum sheets:
- Internal stress:
T6 aluminum sheets generate high internal stress during quenching, which may lead to deformation or dimensional drift during subsequent processing. T651 aluminum sheets, having undergone tensile treatment based on the T6 temper, eliminate most of the internal stress, resulting in better processing stability.
- Machining performance:
Due to the lower internal stress, T651 aluminum sheets are more suitable for high-precision machining and the manufacture of complex structural parts. T6 aluminum sheets may require more correction and adjustment during processing.
- Application areas:
T6 aluminum sheets are more suitable for applications requiring high strength but not extremely high machining precision, such as building supports and container frames. T651 aluminum sheets are more suitable for applications requiring extremely high machining precision, such as precision instruments and medical equipment supports.
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