Abstract：The interference of metastable phase were summarized, combines the research results during last ten years and the formation of metastable phases were analysis. First principle calculation was based on physics, the mechanical stability and structure stability, which is calculated by the basic parameters of quantum mechanics. The conclusion is that there is a temperature range of each metastable phase. For Al5Ti3 phase, the calculations successfully explain the process of transformation and formation, meanwhile, prove that Al5Ti3 phase is a metastable phase. On the other hand, first principle calculations also prove h- Al2Ti is stable. As a reference, the successful application of first principle in the calculation of Al5Ti3 and h- Al2Ti.
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2017, Vol. 24 
