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通过分析球磨试样和球磨后退火试样的Ｘ射线衍射谱，研究了Ｔｉ、Ａｌ混合粉末机械合金化过程中六方相α－Ｔｉ和Ｔｉ_３Ａｌ的晶格畸变特点。结果表明，六方相畸变特点为晶体常数减小和ｃ、ａ轴比值ｃ／ａ减小，其中α－Ｔｉ的（０１１１）面和Ｔｉ_３Ａｌ的（２０２１）面原子错排最为严重。文中讨论了位错滑移系统和空穴的引入与晶格畸变特点的联系。
The characteristics of lattice distortion of hexagonal α-Ti and Ti_3Al during the mechanical alloying of Ti and Al powders were studied by analyzing the X-ray diffraction spectra of the ball-milled samples and the annealed samples after ball milling. The results show that the hexagonal phase distortions are characterized by the decrease of crystal constant and the decrease of c / a ratio c / a, of which the (0111) plane and the (2021) plane of Ti_3Al have the most serious misorientations. The dissertation discusses the relationship between dislocation slip system and the introduction of holes and the characteristics of lattice distortion.