Titanium alloy is a new type of structural material, it has excellent overall performance, such as low density (~ 4.5gcm-3), specific strength and higher than the fracture toughness, fatigue strength and crack propagation resistance, good low temperature toughness, corrosion resistance Excellent performance, some titanium alloy working temperature is 550 ℃, expected to reach 700 ℃. Therefore, it has been widely used in aviation, aerospace, chemical industry, shipbuilding and other industrial sectors and is developing rapidly. Light alloy, steel, etc. (σ0.2 / density) and temperature, the specific strength of titanium alloys than other light metals, steel and nickel alloys, and this advantage can be maintained to about 500 ℃, so some titanium alloy In the manufacture of gas turbine components. About 80% of titanium production is used in the aerospace and aerospace industries. For example, the United States B-1 bomber body structure materials, titanium alloy accounts for about 21%, mainly for the manufacture of fuselage, wings, skins and bearing components. F-15 fighter body structure materials, titanium alloy dosage of 7000kg, accounting for about 34% of the structure weight. Structure of the Boeing 757 passenger aircraft, titanium alloy accounts for about 5%, the amount of 3640 kg. McDonnell Douglas (Mc-Donnell-Dounlas) DC10 aircraft produced by the company, the amount of titanium alloy amounted to 5500kg, accounting for more than 10% of the structure weight. Titanium consumption in chemical and general engineering fields: the United States accounts for about 15% of its production and Europe accounts for about 40%. Due to the excellent corrosion resistance of titanium and its alloys, good mechanical properties, and acceptable histocompatibility, it is used to make biomaterials such as prosthetic devices.
Features:
Titanium is a small density of 4.5g / cm3, only 60% of iron, usually with aluminum, magnesium and other known as light metals, the corresponding titanium alloy, aluminum alloy, magnesium alloy is called light alloy. Many countries in the world have realized the importance of titanium alloy materials, have been research and development of titanium alloy materials, and has been the practical application. Titanium is an important structural metal developed in the 1950s. Titanium has been widely used in various fields due to its high specific strength, good corrosion resistance, high heat resistance and easy welding. In particular, titanium High strength, easy welding performance is conducive to the manufacture of golf club head.
The first practical titanium alloy was the Ti-6Al (aluminum) -4V (alum) alloy developed by the United States in 1954. Ti-6Al-4V alloy in heat resistance, strength, plasticity, toughness, formability, weldability, corrosion resistance and biocompatibility have reached a good level. Ti-6Al-4V alloy usage has accounted for all of the titanium alloy 75 to 85%. Many other alloys can be considered as a modification of the Ti-6Al-4V alloy.
At present, there are hundreds of titanium alloys that have been developed in the world, and there are about 20 to 30 commonly used alloys. For example, there are Ti-6Al-4V, Ti-5Al-2.5Sn and Ti-2Al- 2.5Zr Ti-32Mo Ti-Mo-Ni Ti-Pd Ti-811 Ti-6242 Ti-1023 Ti-10-5-3 Ti-1100 BT9 BT20 IMI829 IMI834, There are 10-2-3'SP 700'15-3-3-3 (commonly known as beta titanium) '22-4'DAT51 for club manufacturing.
