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

金属学报(英文版), 2001, 14(4): 263-266.

^1, , ^2, , ^3,

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

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

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

基金项目: 国家自然科学基金(598965156T)

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

Keywords： γ-TiAl alloy

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.

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

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