| 摘要 |
PURPOSE: To improve the material characteristics of a TiAl-base alloy in a precision casting process or other process in which the control of a structure by thermo-mechanical treatment is not applicable. CONSTITUTION: This TiAl-base alloy hasα- andγ-phases as constitutent phases, <=200wt.ppm oxygen content and 35-70% vol. factor of a lamellar structure consisting ofα- andγ-phases. By the reduced amt. of oxygen and the regulated microstructure, a TiAl-base alloy product excellent in balance of three characteristics, that is, strength, ductility and toughness can be obtd. without carrying out thermo-mechanical treatment.
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