What Are The Characteristics Of Titanium Alloys?

Titanium alloy

Titanium alloy is a new type 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 growth resistance, low temperature toughness, excellent corrosion resistance, some titanium alloy maximum operating temperature of 550ºC, expected to reach 700ºC. Therefore, it is widely used in aviation, aerospace, chemical industry, shipbuilding and other industrial sectors, and develops rapidly. For light alloys, steels, etc. (σ0.2/ density) in relation to temperature, titanium alloys have a higher specific strength than other light metals, steels, and nickel alloys, and this advantage can be maintained to about 500ºC, making certain titanium alloys suitable for gas turbine components. About 80% of titanium production is used in the aviation and aerospace industries. For example, in the B-1 bomber of the United States, about 21% of the body structure material is titanium alloy, which is mainly used to make the fuselage, wings, skin and load-bearing components. The structural material of the F-15 fighter jet body, titanium alloy, amounts to 7,000 kg, about 34% of the weight of the structure. Boeing 757 passenger aircraft structural parts, titanium alloy accounts for about 5%, the consumption of 3640 kg. The DC10, produced by McDonnell Douglas (Mc-Donnell-Dounlas), uses 5,500kg of titanium alloy, accounting for more than 10% of the structure's weight. Titanium usage in chemical and general engineering fields: the United States accounts for about 15 percent of its production, and Europe for about 40 percent. Because of its excellent corrosion resistance, good mechanical properties and qualified histocompatibility, titanium and its alloy are used in the fabrication of biological materials such as prosthesis devices.

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