Research status and prospect of titanium alloys resistant to high temperature of 600℃ and above
This paper reviews the development status of high-temperature titanium alloys resistant to 600 ℃ and above in domestic and foreign situations,and summarizes the composition and properties of IMI834 from UK,Ti-1100 from USA,BT36 from Russia and Ti60,TG6,Ti600,Ti65 and Ti750 from China.The main bottlenecks limiting the development of high-temperature titanium alloys are figured out,and some possible solutions are proposed for reference based on the current research status.In view of improving the thermal stability,thermal strength and high-temperature creeping strength of high-tem-perature titanium alloys,the future perspectives of preparing Ti-based composites,optimizing the alloy compositions and the thermal processing processes,controlling the size,number,volume fraction and morphology of the a2 phase and protecting the high-temperature oxide coating are prospected.This pa-per provides a theoretical basis and reference for the development of high performance high temperat-ure titanium alloys.