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利用透射、扫描电镜及Ｘ－射线衍射分析较系统地研究了Ｔｉ－１５Ｍｏ－２．７Ｎｂ－３Ａｌ－０．２Ｓｉ钛合金中亚稳β相在时效过程中的分解特性，并建立了相应的时效动力学转变图。研究结果表明，在５００℃以上时效，β相直接析出次生α相，该温度以下，先析出ω过渡相，再逐步过渡到平衡α相。最后，对该合金的时效硬化效应及硅化物沉淀特性也进行了讨论。
The decomposition characteristics of metastable β phase in Ti-15Mo-2.7Nb-3Al-0.2Si titanium alloy during aging were systematically studied by transmission, scanning electron microscopy and X-ray diffraction analysis, and the corresponding aging Kinetic transformation diagram. The results show that the secondary phase precipitates directly from the β phase at temperatures above 500 ° C, and below this temperature, the ω transition phase is precipitated first and then the α phase is gradually shifted to equilibrium. Finally, the age hardening effect and silicide precipitation characteristics of the alloy are also discussed.