Ti₂AlNb intermetallics are promising next-generation aerospace materials. Advancement in non-conventional manufacturing methods has made the fabrication of these intermetallics economical. However, post-heat treatments are required to obtain desired mechanical properties, which further depend on the microstructural features of the intermetallics. Extensive studies have been conducted to understand the relation between mechanical behavior and microstructural features of this intermetallic. This review presents the effect of various microstructural features of (a) fully B2 and α2 + B2, (b) fully lamellar, (c) bimodal lamellar, (d) equiaxed and duplex, and (e) plate-like O phase on room temperature properties, namely strength, ductility, and fracture mechanisms. Moreover, the review emphasizes the special microstructural features that are required to enhance the mechanical properties of the alloy.

钛₂AlNb 金属间化合物是有前途的下一代航空航天材料。非常规制造方法的进步使这些金属间化合物的制造变得经济。然而，需要后热处理以获得所需的机械性能，这进一步取决于金属间化合物的微观结构特征。已经进行了广泛的研究，以了解这种金属间化合物的机械行为和微观结构特征之间的关系。本综述介绍了 (a) 完全 B2 和 α2 + B2，(b) 完全层状，(c) 双峰层状，(d) 等轴和双相，以及 (e) 板状 O 相对房间的各种微观结构特征的影响。温度特性，即强度、延展性和断裂机制。而且，