Application Of Titanium Alloy Fasteners in Aerospace Field

In the 21st century, aerospace has shown a broader prospect for development, and high-level or ultra-high level aerospace activities have become more frequent, and their role will go far beyond the field of science and technology itself, and have a broader and more far-reaching impact on politics, economy, military and even human social life.
It should be pointed out that the great achievements made by the aerospace industry are inseparable from the development and breakthrough of aerospace material technology, and titanium alloy has an irreplaceable position in the aviation field because of its high strength and light surface mass.

Titanium alloy fasteners are one of the commonly used titanium alloy products in the aerospace field. Such fasteners generally require solution aging heat treatment to ensure that they meet the shear strength of 660MPa and the tensile strength of 1100MPa. In the manufacturing process, titanium alloy fasteners need to go through a detailed inspection, including appearance, mechanical properties and metallurgical inspections to ensure that they meet strict material standards, quality and performance requirements.
The processing technical conditions of titanium alloy fasteners should meet the relevant requirements put forward in the AMS4967 standard (wire, annealing, forging and ring parts, heat-treatable titanium alloy bars). The standard has clear standard requirements and performance requirements in terms of material tolerance, size, metallography, appearance, defect control and mechanical properties.
However, there are also some problems in the processing of titanium alloy fasteners, such as corrosion, turning and precision problems. During the installation process, titanium alloy fasteners are easy to form gaps, resulting in the inflow of surface paint, which affects their tightness and corrosion resistance. In addition, the thermal conductivity of titanium alloy materials is poor, and the heat generated during processing is easy to concentrate in the cutting zone, resulting in tool failure and workpiece deformation. Therefore, in the processing process, it is necessary to use positive Angle geometry of the blade, keep the blade edge sharp, the use of high pressure and large flow cutting fluid and other measures to ensure the stability of the processing process and the accuracy of the workpiece.
In the field of aviation, titanium alloy fasteners are widely used. According to the data, each of China's domestic C919 aircraft needs about 200,000 titanium alloy fasteners, and 20 million titanium alloy fasteners are needed to complete the first 100 orders. With the rapid development of the aerospace industry, the demand for aviation fasteners has increased sharply, and the market prospect of titanium alloy fasteners is very promising.
The application of titanium alloy fasteners in the aerospace field is not only because of its high strength and lightweight characteristics, but also because it can meet the requirements of continuous safe flight of aerospace instruments. In particular, commercial aircraft need more than ten hours of continuous non-stop flight every day, and the requirements for fasteners are even higher than the aerospace standards. Titanium alloy fasteners can greatly reduce the weight of the aircraft, improve aircraft performance, reduce the cost of use, so it has become an indispensable core material in the aerospace field.
In summary, titanium alloy, as the core material in the aerospace field, plays a pivotal role in the aerospace industry. With the continuous development of the aerospace industry, the application prospects of titanium alloys will be broader.