Titanium is an important structural metal that developed in the 1950s. Titanium alloys are widely used in various fields due to their high specific strength, good corrosion resistance, and high heat resistance. Many countries around the world have recognized the importance of titanium alloy materials and have conducted research and development on them, which have been practically applied. Titanium is a Class IVB element in the periodic table, resembling steel in appearance, with a melting point of 1672 degree , and is a refractory metal. Titanium is abundant in the Earth's crust, much higher than common metals such as Cu, Zn, Sn, and Pb. China has extremely abundant titanium resources. Only in the super large vanadium titanium magnetite discovered in the Panzhihua area of Sichuan, the associated titanium metal reserves amount to about 420 million tons, close to the total amount of proven titanium reserves abroad. Titanium alloys can be divided into heat-resistant alloys, high-strength alloys, corrosion-resistant alloys (titanium molybdenum, titanium palladium alloys, etc.), low-temperature alloys, and special functional alloys (titanium iron hydrogen storage materials and titanium nickel memory alloys) according to their uses.