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Orthorhombic Ti2AlNb-based alloys are considered as promising materials for high-temperature applications in aero-engines due to their high yield strength, low-cycle fatigue, creep resistance. Additive manufacturing is a promising way of producing intermetallic alloy since it allows obtained complex-shaped parts without significant machining. At the same time, additive manufacturing of intermetallic alloys involves the use of high-temperature preheating and requires post-processing by hot isostatic pressing or heat treatment. In this paper, Ti2AlNb-based intermetallic alloy was fabricated by SLM process with a high-temperature substrate preheating and subjected to various heat treatments and hot isostatic pressing to study their effects on microstructure and properties of the alloy.
Keywords: Selective laser melting, additive manufacturing, orthorhombic alloy, heat treatment© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.