【摘要】 近β钛合金中的亚稳ω相有助于析出细小弥散的α相,从而影响合金的强度、塑性和韧性。因此,自ω相被发现以来,研究人员对其形成条件、分类、转变机理和衍射花样等进行了深入研究。本文总结了研究人员使用高分辨透射电子显微镜和三维原子探针在ω相分类、结构、成分、相变方面的最新研究结果。在此基础上,阐述了ω相目前的研究难点和可能的发展方向。更多还原

【Abstract】 Metastable ω phase in near-β titanium alloys is helpful for the precipitation of fine α precipitates, which can affect mechanical properties of these alloys. Therefore, researchers have studied the formation conditions, classification, transformation mechanism and diffraction patterns of the ω phase since it has been found. This paper summarized the recent research results on embryonic ω, composition of ω and effects on α phase, which were researched by high resolution transmission electron microscopy and three-dimensional atom probe. On this basis, this paper expounded the current research difficulties and possible development direction.更多还原