Application and characteristics of titanium alloy in automobile

Titanium alloy is a new type of structural and functional material, which has excellent comprehensive properties, low density and high specific strength. Titanium has a density of 4.51g/cm3, between aluminum (2.7g/cm³) and iron (7.6g/cm³). The specific strength of titanium alloy is higher than that of aluminum alloy and steel, and the toughness is comparable to that of steel. Titanium and titanium alloy corrosion resistance is good, better than stainless steel, especially in the Marine atmospheric environment to resist chloride ion erosion and micro-oxidation atmosphere corrosion resistance is good, titanium alloy working temperature is wide, low temperature titanium alloy can maintain good plasticity at -253℃, and heat-resistant titanium alloy working temperature up to 550℃, its heat resistance is significantly higher than aluminum alloy and magnesium alloy. At the same time, it has good processability and weldability.

The excellent performance of titanium and titanium alloy has been concerned by various cutting-edge industries since the industrial production of titanium, with the start of the titanium industry, in the mid-1950s, titanium entered the automotive industry. In the 1990s, with the worldwide energy shortage and the strengthening of people's environmental awareness, especially the automobile industry, the United States, Japan and Europe have promulgated a series of ecological regulations, which put forward higher requirements for fuel efficiency, CO2 emissions, vehicle weight reduction, vehicle safety and reliability. Many developed countries and famous automobile manufacturers are actively developing and increasing research investment in automotive titanium. Provides a powerful power for automotive titanium. Entering the new century, China's titanium industry has gradually entered the automotive field. In the current automotive market, as the demand for luxury cars, sports cars and racing cars increases year by year, titanium parts are also increasing year by year. In 1990, the global automotive titanium was only about 50 tons/year, 500 tons/year in 1997, 1100 tons/year in 2002, and 3000 tons/year in 2009. It can be seen that titanium in the automotive industry has entered the acceleration stage.