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用透射电镜观察了在不同温度、不同时间时效时Ll0－TiAl金属间化合物中形成的Ll2－（Al，Ag）3Ti，Ti3AlC析出相的形态以及与基体之间的位向关系，讨论了析出相的形态与TiAl基体间的错配度的关系．
The morphologies of the precipitated phases of Ll2- (Al, Ag) 3Ti and Ti3AlC formed in the Ll0-TiAl intermetallic compounds at different temperatures and aging time were observed by transmission electron microscopy and the orientation relationship with the matrix was discussed. The relationship between the morphology and TiAl matrix mismatch.