There is a saying in the aviation industry: "For every pound of weight lost, the flight altitude will increase by one foot." It can be seen that reducing weight is very important for improving aircraft performance.
How to reduce the weight of the aircraft? This is inseparable from a material - titanium alloy.
Before talking about titanium alloys, let's first understand titanium. Titanium is a metal material with excellent physical properties and stable chemical properties. It is abundant in the earth's crust, much higher than common metals such as copper, zinc, and tin, and is buried in rocks and sand in large quantities. Alloys made of titanium to which other elements have been added are known as titanium alloys. Titanium alloy has the advantages of high strength, light weight, and strong heat resistance. Using it in aircraft manufacturing can not only prolong the service life of the aircraft, but also reduce its own weight and greatly improve the flight performance of the aircraft.
According to test data, the strength of titanium alloy is 1.3 times that of aluminum alloy, 1.6 times that of magnesium alloy, and 3.5 times that of stainless steel. Its excellent thermal strength is suitable for aerospace manufacturing and can work for a long time at a temperature of 450 ° C to 500 ° C. In addition, titanium alloys can withstand both high and low temperatures, and can maintain a certain degree of plasticity at -253°C.
The more advanced the aircraft, the more titanium is used. In the US SR-71 high-altitude and high-speed reconnaissance aircraft, titanium accounts for 93% of the aircraft's structural weight, and it is known as an "all-titanium" aircraft. You know, for every 10% reduction in weight of an aircraft, 4% of fuel can be saved.
At present, most of the titanium and titanium alloys produced in the world are used in the aerospace industry. Titanium alloys are mainly used in the manufacture of aircraft and engines, such as forged titanium fans, compressor discs and blades, engine covers, exhaust devices and other components, as well as structural frame parts such as aircraft frame frames. The spacecraft utilizes the high strength, corrosion resistance and low temperature resistance of titanium alloys to manufacture various pressure vessels, fuel tanks, fasteners, instrument straps, frames and rocket shells. On artificial satellites, lunar modules, manned spacecraft and space shuttles, titanium alloy plate weldments are used. It can be predicted that with the development of aerospace industry technology, the future development of titanium alloys has broad prospects. Scientists will increase the research and use of titanium alloys to create more advanced equipment.
