In recent years, affected by the global energy crisis, in the development of aerospace in my country, the demand for new structural materials that meet its standards, high strength, and high-temperature resistance has become increasingly tense. Titanium and its alloys have good metallic properties, which has promoted the wide promotion and application of this composite material in the field of aerospace, but it is also restricted by its processing efficiency and production cost. With the development and development of titanium alloys, the competition for titanium material varieties and the reduction of prices have doubled the application range of titanium in industrial construction. In the field of aerospace, the major users of titanium are basically concentrated in Western countries, especially the United States, the United Kingdom, and other countries that took the lead in completing the second industrial revolution. They use more than 50% of titanium materials in the aerospace industry. But in contrast, Asian countries, including my country, only invest about 10% of titanium in the field of aerospace. However, in recent years, with the rapid development of Asian countries in the field of aerospace, the consumption of titanium in aerospace will increase accordingly, so this new type of titanium alloy metal will become the key research object of my country at present and in the future.
1. Introduction to titanium alloy
The new titanium alloy is to use titanium as the basic form to incorporate other alloy elements or composite metals composed of materials called titanium alloys. Titanium alloys can be divided into many types in terms of different structures and characteristics. Compared with other composite materials, the new titanium alloy has metallic properties such as low density, strong toughness, and high corrosion resistance, making it the most ideal material for aerospace engineering structures.
2. The development of titanium alloy
Titanium has been discovered for more than 200 years since the end of the 18th century. However, due to the high melting point of titanium metal and its very active chemical properties, it is difficult to produce pure titanium with good plasticity. Titanium ingots must be smelted in a vacuum, and the manufacturing process is complicated during the smelting process, so titanium and its alloys cannot be widely used in industrial production and industrial construction for a long time. With the continuous development of science, technology, and the economy, there has been further exploration and research on the materials used in the development of aerospace, which has promoted the rapid development of the titanium industry. The metal properties of titanium and titanium alloys determine the main properties of titanium alloys. application and development. In summary, titanium and titanium alloys mainly have the following metal properties:
1) Compared with other composite materials, the metal characteristics of titanium have the characteristics of low density and high strength. Its density is just between aluminum and iron, but in terms of strength and toughness, titanium alloy is much higher than aluminum and steel.
2) Titanium alloys face a wide range of temperatures during use and processing, so when the temperature drops to -200°C during processing and use, it can still maintain its original shape, while processing at high temperatures In the state or in the process of using in a high-temperature environment, it can withstand a high temperature of more than 500 ° C. It can be seen that the heat resistance is much higher than that of aluminum alloy and magnesium alloy. If in the process of use and processing, it is possible to avoid or prevent environmental pollution caused by oxidation in a higher-temperature environment, then it may be further developed.
3)Titanium and titanium alloys also have excellent corrosion resistance, especially in seawater and marine atmospheric environments, which makes titanium and titanium alloys more competitive in the application of ships and aircraft.
4)Titanium has very high chemical properties and is very susceptible to pollution problems caused by hydrogen, oxygen, and nitrogen during high-temperature processing, which makes it restricted and limited in the process of smelting and processing, thus making production costs lower. Relatively high.
5)Compared with other composite materials, titanium alloy has poor thermal conductivity and relatively low wear resistance. Therefore, in the working process of the cutting process, the phenomenon of sticking to the knife due to the temperature rise of the workpiece and the cutting tool cannot be avoided.
Shaanxi Etermetal Co., Ltd. is a titanium alloy materials supplier, which can provide high-quality products and services for many buyers. If your company is looking for a qualified titanium material manufacturer, welcome to consult and cooperate!
