High temperature titanium alloy.

Successfully developed the world's first high-temperature titanium alloy is Ti-6Al-4V, use temperature of 300-350 ℃. Was subsequently developed using a temperature of 400 ℃ IMI550, BT3-1 and other alloys, and the use of a temperature of 450 ~ 500 ℃ of IMI679, IMI685, Ti-6246, Ti-6242 alloy. Has been successfully applied in military and civil aircraft engines in the new high-temperature titanium alloy has a British IMI829, IMI834 alloys; United States of Ti-1100 alloy; Russia BT18Y, BT36 alloy. Table 7 as part of a new national high temperature titanium maximum use temperature [26].
In recent years, the use of foreign fast solidification / powder metallurgy technology, fiber or particle reinforced composite materials developed high temperature titanium alloy titanium alloy as the development direction, so that the use of temperature titanium alloy can be increased to above 650 ℃ [1'27'29'31 ]. American McDonnell Douglas using rapid solidification / powder metallurgy technology Qi successfully developed a high-purity, high density of titanium, its strength at 760 ℃ equivalent strength titanium alloys used in the current room temperature