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采用透射电子显微镜较详细地研究了双温热处理试样的显微组织结构特征。试验发现，由于多相ＴｉＡｌ基合金相界面间存在一定的位向关系，以及相析出和相转变在一定的惯习面和方向上发生，导致了相变特征呈现多样性，从而得到复杂结构的显微组织
Transmission electron microscopy (TEM) was used to study the microstructural characteristics of the samples treated by dual-temperature heat treatment in more detail. It is found that due to the existence of a certain directional relationship between the phases of the multi-phase TiAl-based alloy phase and the occurrence of phase precipitation and phase transformation in a certain habit plane and direction, the phase transition characteristics are diversified and the complex structure Microstructure