TiAl基合金显微组织对高温抗氧化性的影响  

The Effect of Microstructure on High-temperature Oxidation Resistance of TiAl Based Alloy

作　　者：陈伶晖[1] 贺跃辉[1] 曹鹏[1] 黄伯云[1] 曲选辉[1] 曾欲晓[1] 

机构地区：[1]中南工业大学粉冶所

出　　处：《热加工工艺》1995年第6期7-9,共3页Hot Working Technology

基　　金：国家"863"计划资助

摘　　要：研究了Ｔｉ—３３ＡＩ—３Ｃｒ—０．５Ｍｏ（ｗｔ％）合金的近γ相组织、双态组织、近层片状组织和全层片状组织等几种典型显微组织对其９００℃下循环氧化过程中高温抗氧化性的影响。结果表明，双态组织试样的高温抗氧化性最好，而近层片状组织试样的高温抗氧化性最差。使用扫描电子显微镜及能谱、波谱分析仪分析了各种显微组织试样的氧化层结构和组成。The effects of several typical microstructures including near γ phase structure,duplex structure, near lamellar structure and full lamellar structure on the high temperature oxidation resistance of Ti-33Al-3Cr-0.5Mo (wt% )alloy during circle oxidation at 900℃ were investigated. The results showed that the duplex structure sample exhibited the best oxidation resistance while near lamellar structure sample had the worst one.The structure and components of the oxidation layers of these microstructures were analysed using SEM and energy spectrum analyser.

关 键 词：高温 抗氧化性 显微组织 氧化层 结构 钛合金 

分 类 号：TG146.23[一般工业技术—材料科学与工程]