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 ...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.展开更多
基金supported by the Science and Technology Agency for Japan and the National Natural Science Foundation of China(Grant No.59895150).
文摘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.
