THE STRUCTURE CHANGE OF γ-TiAl IRRADIATED BY 50keV XENON IONS AT ROOM TEMPERATURE
来源期刊：Acta Metallurgica Sinica2001年第4期
论文作者：D.X.Li L.L.He X.M.Meng
Key words：γ-TiAl alloy; xenon ions irradiation; precipitate;
Abstract: The structure change of γ-TiAl intermetallic alloy irradiated by 50keV xenon ionswith a dose of 7.6×1018ions/m2 was studied in a high voltage transmission electronmicroscope at room temperature.Some precipitates appeared in the γ-TiAl grains,which have a hexagonal structure with a=0.283nm and c=0.462nm,and seems to bethe disordered Al2 Ti3 phase.The orientation relationship between the precipitates andmatrix is (0001)P//(111 )γ-TiAl and [21 1 0]P//[011]γ-TiA1.
D.X.Li1，L.L.He1，X.M.Meng1
(1.Laboratory of Atomic Imaging of Solid,Institute of Metal Research,The Chinese Academy of Sciences,Shenyang 110016,China)
Abstract:The structure change of γ-TiAl intermetallic alloy irradiated by 50keV xenon ionswith a dose of 7.6×1018ions/m2 was studied in a high voltage transmission electronmicroscope at room temperature.Some precipitates appeared in the γ-TiAl grains,which have a hexagonal structure with a=0.283nm and c=0.462nm,and seems to bethe disordered Al2 Ti3 phase.The orientation relationship between the precipitates andmatrix is (0001)P//(111 )γ-TiAl and [21 1 0]P//[011]γ-TiA1.
Key words:γ-TiAl alloy; xenon ions irradiation; precipitate;
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