Precision titanium alloy material objects will become the mainstream of metal structure manufacturing
Precision titanium alloy structure and its products are mainly used in auto parts, communications equipment, aviation equipment, high-speed locomotive on the structure of the machining accuracy and product quality has strict requirements in the field of advanced precision, besides, also applied to electric equipment manufacturing, precision mechanical and electrical equipment manufacturing, and many other of the pillar industries of national economy development. Titanium alloy is a new kind of structural material, it has excellent comprehensive properties, such as low density (~4.5g cm-3), high specific strength and specific fracture toughness, good fatigue strength and crack propagation resistance, good low temperature toughness, excellent corrosion resistance, the highest operating temperature of some titanium alloys is 550oC, expected to reach 700oC. Therefore, it is increasingly widely used in aviation, aerospace, chemical industry, shipbuilding and other industrial sectors, rapid development. The (σ0.2/ density) relation to temperature of light alloys, steels, etc., titanium alloys are stronger than other light metals, steels, and nickel alloys, and this advantage can be maintained up to about 500oC. Therefore, some titanium alloys are suitable for gas turbine components.
In 2011, the proportion of China's production of titanium alloy die casting structural parts in the total production of metal die casting structural parts increased from 65.68% in 2000 to 85.90%, becoming an important development area of China's metal structure manufacturing. At the same time, the world titanium alloy manufacturing industry has a trend to accelerate the transfer to China, among which the formation of industrial clusters and cost advantage is one of the main driving forces, titanium alloy China era is opening. Materials and aircraft in the mutual promotion of continuous development, aviation materials has been playing a pilot and basic role. According to the different parts used, aviation materials can be divided into body materials and engine materials. In the development of modern material science and technology, titanium tube body material not only leads the development of aircraft itself, but also drives the progress of ground vehicles and space vehicles. The development of engine materials promotes the innovation of power industry and energy industry.