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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Additive Manufacturing of Refractory Metallic Materials
Presentation Title Mechanical Properties and Microstructural Characteristics of Additively Manufactured C103 Niobium Alloy
Author(s) Prithvi Dev Awasthi, Priyanka Agrawal, Ravi Sankar Haridas, Rajiv S Mishra, Michael T Stawovy, Scott Ohm, Aidin Imandoust
On-Site Speaker (Planned) Prithvi Dev Awasthi
Abstract Scope This research work aims to investigate the fitness of Nb-based C-103 alloy for laser based additive manufacturing (AM) technologies as a benchmark for the development of AM friendly Nb-based alloys. Crack free C-103 specimens with relative densities of above 99% were fabricated using laser powder bed fusion technology. Tensile and compression test results showed superior mechanical properties as compared to wrought C-103 counterparts. Improved mechanical performance was attributed to the high density of dislocations and formation of dislocation cell-structures revealed by transmission electron microscopy techniques. Electron backscattered diffraction analysis revealed columnar grain structure with <001>||BD fiber texture, which was consistent with the observed anisotropy in the machinal behavior. Fractography observations revealed a mix of ductile and brittle fracture behavior, wherein cleavage-like features originated from lack of fusion defects.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, Mechanical Properties, Other


Additive Manufacture of Refractory Metals for Aerospace Applications
Additive Manufacturing of Refractory High Entropy Alloys
Case Studies on Additive Manufacturing of Refractory Materials
Design and Development of 3D Printable Nb-based Alloys for High Temperature Applications
Effect of Minor Titanium and Aluminum Addition on Ductility of Refractory High Entropy Alloy
Electron Beam Melting Additive Manufacturing of Pure Molybdenum
Enhancement of the Thermal Conductivity of Inconel 718 with the Addition of Tungsten
Fabrication of Pure Tungsten Using Electron Beam Powder Bed Fusion
Laser Assisted Cold Spray Deposition for Niobium and Tantalum Materials
Laser Beam Directed Energy Deposition Process Optimization for Refractory High Entropy Alloys
Laser Powder-bed-fusion of Pure Tungsten for Fusion Energy Applications
LPBF Printing of Nb for the Production of 3D Resonance Cavities
Mechanical Properties and Microstructural Characteristics of Additively Manufactured C103 Niobium Alloy
Refractory Development Framework Using Computational Modeling
Refractory Metals – Some Historical Observations
Study of Melt-pool Geometry and Microstructure in Pure W by Powder-feed Directed Energy Deposition
Thermal-chemical-fluid Flow of Dissimilar Species Mixing between Titanium and Refractory Metals
Union of Mo and Cr Alloys into a Single Multi-materials Part Using Laser-powder Directed Energy Deposition

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