Application Fields and Characteristics of TC4 Titanium Rod

1. TC4 titanium rod (Ti-6A1-4V) belongs to α＋β Type A alloy, large dosage.

2. TC4 titanium rod has good processing properties. Its conventional thermal deformation is carried out in the two-phase zone. The deformation must be greater than 50% to transform the coarse original widmanstatten structure into equiaxed structure.

3. According to different needs, the deformed TC4 titanium bar can be subject to stress relief annealing (Goo ℃ heat preservation and air cooling), ordinary annealing (700 - Sao ℃ heat preservation and air cooling), recrystallization annealing (940 ℃ heat preservation and furnace cooling to 480 ℃ air cooling) and double annealing (940 ℃ heat preservation and air cooling+700 ℃ heat preservation and air cooling) and other heat treatment processes. The microstructure obtained by stress relief annealing and ordinary annealing is non recrystallized or partially recrystallized, with high strength; Equiaxed after recrystallization annealing. α＋ Intercrystalline β Good structure and plasticity; Equiaxed after double annealing α＋β The structure is close to bimodal structure and has good comprehensive properties (Qb is about 900-1000MPa, ￠ is 10%, ψ About 35% - 45%).

4. The strength of TC4 titanium rod can be increased by 20% - 30% after strengthened heat treatment. It is generally believed that primary growth can be obtained by aging at 850 ℃ - 950 ℃ α Appropriate amount of microstructure and better comprehensive properties. The hardenability of TC4 alloy is poor, and the cross section of parts with strengthened heat treatment is generally not greater than 40 mm.

5. TC4 alloy has good weldability, and the temperature in the weld zone is not lower than 90% of the matrix; The plasticity is also similar to that of the Tsuen body metal.

6. The corrosion resistance of TC4 alloy is close to that of pure titanium, and it can work under 400 ℃ for a long time. Short time:: L working temperature can reach 700 ℃ - 750 ℃. When the oxygen and nitrogen content in the alloy is low, TC4EL, 1 alloy can maintain good plasticity at - I 96 ℃, and can be used to make low temperature and high pressure vessels.