1、 Heat treatment is an important means to improve the properties of TC20 titanium alloy. Common heat treatment processes include annealing, solution treatment, and aging treatment. Annealing: Purpose: To remove residual stress during processing and maintain a certain degree of stability in the alloy structure.

Method:

Medium low temperature annealing: Heat the alloy to below 700 ℃ and then perform air cooling. The main process that occurs is the removal of residual stress, and the original microstructure of the alloy remains almost unchanged.

Recrystallization annealing: Heating the alloy above the recrystallization temperature causes a recrystallization change in the alloy structure, resulting in a new recrystallized structure. This helps improve the internal structure and properties of the material.

Solution treatment: The purpose is to dissolve the solid solution in the alloy to improve its plasticity and processing performance.

Temperature range: typically between 800 ° C and 950 ° C, depending on the specific composition of the alloy and the desired improvement in mechanical properties.

Time: depends on the specific composition of the alloy and the required improvement in mechanical properties.

Aging treatment: Objective: In a step after solid solution treatment, the required strengthening phase is precipitated by controlling temperature and time, thereby adjusting the hardness and strength of the alloy.

Temperature range: generally between 450 ° C and 650 ° C, the specific temperature also depends on the specific composition of the alloy and the required mechanical properties.

Time: Also varies depending on specific requirements.

2、 Cold working TC20 titanium alloy is difficult due to its high strength and low plasticity. Common cold working methods include cold rolling, cold drawing, and cold forging. During the cold working process, multiple annealing treatments may be required to improve the deformation ability.

3、 Hot processing is an important method for processing TC20 titanium alloy, which helps to reduce deformation resistance and improve material plasticity. Common hot processing methods include hot rolling, hot forging, and hot extrusion. Processing temperature range: usually between 500 ° C and 600 ° C.

Characteristics: During the hot processing, an oxide film is easily formed on the surface of titanium alloy, which affects the surface quality of the material. Therefore, protective measures are usually required, such as processing in a protective atmosphere or vacuum, or coating the surface with a protective layer. Hot processing helps improve the internal structure and properties of materials, such as enhancing their strength and toughness through grain refinement and other methods.

4、 In addition to the aforementioned processing techniques, the processing of TC20 titanium alloy may also involve other special processes such as forging, welding, etc. The selection and implementation of these processes need to be determined based on specific processing requirements and material properties.