近β钛合金中ω相的研究进展

Research Progress of ω Phase in Near-β Titanium Alloys

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。

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 article summarized the recent research results about 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 expounds the current research difficulties and possible development direction.