热暴露对Ti-25V-15Cr-2Al-0.2C合金微观组织的影响  

Effect of Thermal Exposure on Microstructure of Ti-25V-15Cr-2Al-0.2C Alloy

作　　者：雷力明[1] 黄旭[1] 孙福生[1] 曹春晓[1] RuggD VoiceW 

机构地区：[1]北京航空材料研究院,北京100095 [2]Rolls Royce Plc

出　　处：《稀有金属》2003年第1期207-209,共3页Chinese Journal of Rare Metals

基　　金：英国Rolls Royce公司资助项目

摘　　要：研究了热暴露对Ti 2 5V 15Cr 2Al 0 2C阻燃β钛合金微观组织的影响。结果表明 ,在 5 40℃ (该合金期望使用温度 )热暴露 10 0h后 ,合金晶界上形成了连续的α膜 ,β基体和少量α相发生了短程有序化 (SRO)转变。除此之外 ,热暴露过程中还有少量的金属间化合物TiCr2 相析出。The effect of thermal exposure on microstructure of non burning β titanium alloy Ti 25V 15Cr 2Al 0 2C was investigated The results show that after exposure at 540 ℃(expectant application temperature of the alloy) for 100 h, a continuous α film is formed at β grain boundaries and a low degree of short range ordering (SRO) of the β matrix and α precipitation occurs In addition, a small amount of intermetallic compound TiCr 2 was also produced by a slow eutectoid reaction during long term exposure

关 键 词：阻燃钛合金 热暴露 微观组织 

分 类 号：TG146.23[一般工业技术—材料科学与工程]