Ti-5.3Al-4.2Sn-2Zr-1Mo-0.25Si-1N high-temperature titanium alloy was developed bythe Institute of Metal Research, Chinese Academy of Sciences, and was called Ti-55 alloywhich was developed for elevated temperature service to 550℃. Using Ti-55 alloy in Ti-5.3Al-4.2Sn-2Zr-1Mo-0.25Si-1N high-temperature titanium alloy was developed by the Institute of Metal Research, Chinese Academy of Sciences, and was called Ti-55 alloy was developed for elevated temperature service to 550 ° C Using Ti-55 alloy in