THE STRUCTURE CHANGE OF γ-TiAl IRRADIATED BY 50keV XENON IONS AT ROOM TEMPERATURE

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Acta Metallurgica Sinica (English Letters) ›› 2001, Vol. 14 ›› Issue (4): 263-266 .

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THE STRUCTURE CHANGE OF γ-TiAl IRRADIATED BY 50keV XENON IONS AT ROOM TEMPERATURE

X.M.Meng, L.L.He, D.X.Li

Laboratory of Atomic Imaging of Solid,Institute of Metal Research,The Chinese Academy of Sciences,Shenyang 110016,China

Received:2000-12-08 Revised:2001-05-18 Online:2001-08-25 Published:2009-10-10
Contact: X.M.Meng

Abstract

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

X.M.Meng, L.L.He, D.X.Li. THE STRUCTURE CHANGE OF γ-TiAl IRRADIATED BY 50keV XENON IONS AT ROOM TEMPERATURE[J]. Acta Metallurgica Sinica (English Letters), 2001, 14(4): 263-266 .

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THE STRUCTURE CHANGE OF γ-TiAl IRRADIATED BY 50keV XENON IONS AT ROOM TEMPERATURE

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