In the chemical industry and other application fields, high requirements are placed on semi-finished products and processed parts of titanium or titanium alloys. Therefore, in the field of aviation and aerospace, the cost of developing inspection instruments and monitoring devices is particularly high, so titanium alloys are The price of parts has a big impact.
Titanium alloy has the highest tensile plasticity and can be welded in various ways. Its long-term use temperature can reach up to 250 degrees Celsius. It is mainly used to manufacture various structural parts with low stress on aircraft and engines. Industrial pure titanium has good plasticity and can be used to form various plate stamping parts in the cold state. It also has high corrosion resistance. Ti5Al2.5Sn titanium alloy has moderate room temperature tensile strength (800 degrees Celsius lOOMPa and good welding performance). Compared with industrial pure titanium, new titanium alloys mainly include various grades of industrial pure titanium and the widely used Ti5Al2.5Sn Titanium alloy, the room temperature tensile strength of industrial pure titanium fluctuates within the range of 350 degrees Celsius and 700MPa. The Ti5Al2.5Sn alloy process has slightly lower plasticity and higher thermal strength, and the long-term working temperature can be as high as 450 degrees Celsius.
With the rapid development of cutting-edge science and technology such as aviation, aerospace, and nuclear energy, the requirements for materials are becoming more and more stringent. In particular, titanium forgings and titanium alloy products not only require materials for manufacturing equipment parts in these areas to be corrosion-resistant, wear-resistant, and resistant to fretting , and it also requires resistance to high temperatures.
Attention must be paid to long-term tests, in many cases, before large-scale applications of titanium are carried out in the chemical industry. Cooperate to test its service life and material structure under test conditions. If the use of conventional structural materials mostly shows lack of safety (immaturity) resulting in low economic benefits, then we must first gradually develop titanium and titanium alloys, and develop high-end technologies in the field of structural materials in recent decades. Various other mature new materials. Therefore, the military sector has developed faster than the civilian sector in the application of titanium and its alloys.
