Abstract
The Ti2AlNb alloy is a refractory material with the potential to replace Ni-based alloys in the manufacturing process of aerospace engines. However, the development of this alloy is still in the research stage, requiring further investigation to promote its industrial application. Therefore, this paper provides an overview of the alloy, starting from its elemental composition and encompassing its microstructural morphology, fabrication processes, and mechanical properties. First, this paper presents the nine common alloying elements (Al, Nb, Mo, Zr, Fe, V, W, Ta, and Si), which play various roles in determining the alloy's microstructure and mechanical performance. Then, the paper presents three typical microstructures and the corresponding microstructure regulation processes, providing references for microstructure regulation. In the regulation process, although there are seven manufacturing processes (Casting, Forming under pressure, Machining, Welding and joining, Powder metallurgy, Additive manufacturing, and Surface treatment) currently applied to the industrialization of this alloy, certain shortcomings still exist, indicating significant research opportunities. Finally, the paper summarizes the relationships between the alloy's typical microstructures and its mechanical properties. In conclusion, the work presented in this paper offers a clear reference for advancing the industrial application of the alloy and encourages future researchers to contribute to the further development of this field based on the foundation established by this review.
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Fu, Y., Su, Z. Elemental Composition, Phase Diagram, Microstructure, Fabrication Processes, and Mechanical Properties of Ti2AlNb Alloy: A Review. J. of Materi Eng and Perform (2024). https://doi.org/10.1007/s11665-024-09801-z
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DOI: https://doi.org/10.1007/s11665-024-09801-z