| Abstract Scope |
In recent years, significant attention has been directed toward additive manufacturing (AM) techniques, particularly Directed Energy Deposition (DED) and Laser Powder Bed Fusion (LPBF), leading to remarkable advancements in processing and understanding material properties. However, less focus has been placed on Electron Beam Powder Bed Fusion (EB-PBF), despite its unique advantages for manufacturing refractory-based alloys. EB-PBF provides a controlled, high-temperature processing environment that minimizes residual stresses, enables superior microstructural control, and facilitates the fabrication of materials with high melting points.
In this talk, we will present recent findings in the EB-PBF of refractory-based alloys, including pure tungsten, tungsten heavy alloys, and molybdenum-based alloys. We will discuss key process-structure-property relationships, defect mitigation strategies, and pathways to enhance mechanical performance. Additionally, we will explore future directions, including the potential of refractory high-entropy alloys (R-HEAs), along with challenges in process optimization, scalability, and industrial adoption.
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