通过电子衍射的方法研究了Ti3Al基合金中ω相的形成规律及形成过程。在快速凝固态、热压态以及淬火态的Ti3Al基合金中均未见到ω相 ,而在淬火后 4 0 0～ 60 0℃回火时则可清楚地看到ω相的存在 ,并且在此温度范围内随着回火温度的升高 ,ω相的析出越彻底 ,结构越完善。 The formation and formation of ω phase in Ti3Al-based alloys were studied by means of electron diffraction. In the rapidly solidified, hot-pressed and quenched Ti3Al-based alloys, no phase was found, but the quenched after the 400 ~ 600 ℃ tempering can clearly see the presence of ω-phase, and in the In this temperature range, as the tempering temperature increases, the more complete the precipitation of the ω phase, the better the structure.