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The structure change of γ-TiAl intermetallic alloy irradiated by 50keV xenon ions with a dose of 7.6× 10~18 ions/m~2 was studied in a high voltage transmission electron microscope at room temperature. Some precipitates appeared in the γ-TiAl grains, which have a hexagonal structure with a=0.P283nm and c=0.462nm, and seems to be the disordered Al_2 Ti_3 phase. The orientation relationship between the precipitates and matrix is (0001)p//(11■)_γ-TiAl and [2■■0]_p//[011]γ-TiAl.
The structure change of γ-TiAl intermetallic alloy irradiated by 50 keV xenon ions with a dose of 7.6 × 10 ~ 18 ions / m ~ 2 was studied in a high voltage transmission electron microscope at room temperature. , which has a hexagonal structure with a = 0.288 nm and c = 0.462 nm, and seems to be the disordered Al_2 Ti_3 phase. The orientation relationship between the precipitates and matrix is (0001) p // (11 ■) _γ-TiAl and [2 ■■ 0] _p // [011] γ-TiAl.