High temperature titanium alloy has the advantages of high specific strength, high temperature resistance, creep resistance, and good fatigue performance. It is an important structural material for key components such as aero-engine disk parts and blades. At the same time, compared with aluminum and magnesium light alloys, titanium alloys have excellent high temperature performance, and thus have considerable application potential in aero-engine high temperature resistant parts. Conventional near-α type high-temperature titanium alloys have difficulty in coordinating heat and thermal stability, a sharp drop in high-temperature oxidation resistance, and a titanium fire problem in local components. According to the design idea of traditional near–α–type Ti–Al–Sn–Zr–Mo–Si hightemperature titanium alloy, the trace elements Er and Re were added respectively, and Ti–6.5Al–2.5Sn–9Zr–0.5Mo–1Nb–1W–0.25Si–0.1Er and Ti–6.5Al–2.5Sn–9Zr–0.5Mo–1Nb–1W–0.25Si–0.1Re two kinds of high temperature resistant titanium alloys for 650℃ with independent intellectual property rights were designed. The best matching mode for thermal strength, thermal stability and creep resistance is sought from the perspective of regulating the thermal processing process and optimizing the heat treatment system. It provides experimental and theoretical basis for the application of high temperature titanium alloy in the aerospace industry.
陈子勇,刘莹莹,靳艳芳,马小昭,柴丽华,崔亚鹏. 航空发动机用耐650℃高温钛合金研究现状与进展[J]. 航空制造技术, 2019, 62(19): 22-30.
CHEN Ziyong, LIU Yingying, JIN Yanfang, MA Xiaozhao, CHAI Lihua, CUI Yapeng. Research on 650°C High Temperature Titanium Alloy Technology for Aero-Engine. Aeronautical Manufacturing Technology, 2019, 62(19): 22-30.