What Are The Varieties Of Titanium Alloy?
Nov 05, 2022
Alpha titanium alloy
Titanium alloy it is a single-phase alloy composed of α phase solid solution, whether at the general temperature or at a higher actual application temperature, are α phase, stable organization, wear resistance is higher than pure titanium, strong oxidation resistance. At the temperature of 500℃ ~ 600℃, it still maintains its strength and creep resistance, but it can not be strengthened by heat treatment, and the strength is not high at room temperature.
Beta titanium alloy
It is a single-phase alloy composed of β-phase solid solution, which has high strength even without heat treatment. After quenching and aging, the alloy is further strengthened, and the strength at room temperature can reach 1372 ~ 1666MPa. But the thermal stability is poor, should not be used at high temperature.
Alpha + beta titanium alloy
It is a two-phase alloy, with good comprehensive properties, good structure stability, good toughness, plasticity and high temperature deformation properties, can be better hot pressure processing, quenching, aging to strengthen the alloy. The strength after heat treatment is about 50% ~ 100% higher than the annealing state; High temperature strength, can work at 400℃ ~ 500℃ for a long time, its thermal stability is inferior to α titanium alloy.
The most commonly used of the three titanium alloys are α-titanium alloy and α+ β-titanium alloy; The machinability of α titanium alloy is the best, followed by α+p titanium alloy and β titanium alloy. The alpha titanium alloy was code-named TA, the beta titanium alloy was code-named TB, and the alpha + beta titanium alloy was code-named TC. According to the use of titanium alloy can be divided into heat resistant alloy, high strength alloy, corrosion resistant alloy (Ti-Mo, Ti-palladium alloy, etc.), low temperature alloy and special function alloy (Ti-iron hydrogen storage materials and Ti-nickel memory alloy). Composition and properties of typical alloys. Different phase composition and microstructure of heat-treated titanium alloy can be obtained by adjusting the heat treatment process. It is generally believed that fine equiaxed structures have good plasticity, thermal stability and fatigue strength. The acicular structure has higher lasting strength, creep strength and fracture toughness. Equiaxed and acicular mixed tissues have better comprehensive properties.
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