中國有色金屬學(xué)報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 6 No. 2 June 1996 |
EFFECT OF MICROSTRUCTURES ON CYCLLC-OXIDATION BEHAVIOUR OF TiAL ALLOY
Zhou Kechao, Huang Baiyun,Qu Xuanhui, He Yuehui, Kong Gaoning
（Powder Metallurgy Research Institute,Central South University of Technology, Changsha410083）
Abstract:The influence of microstructures on the cyclic oxidation behaviour of Ti-33Al-3Cr-0.5 Mo(%) alloy was investigated. It was clarified that the oxidation behaviour of the alloy with near-gamma, duplex and fully-lamellar microstructure are very similiar in air at 1 173K and their mass gain is much lower than that of the alloy with nearly-lamellar microstructure. The reason for the difference in oxidation behaviours was attributed to the morphologies of Al2O3 layer in the oxide scale.
Key words: γ-TiAl oxidation microstructure morphology Al2O3 oxide scale
