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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Additive Manufacturing of Refractory Metallic Materials
Presentation Title Additive Manufacturing of Refractory High Entropy Alloys
Author(s) Shahryar Mooraj, Xuesing Fan, George Kim, Wen Chen, Peter K. Liaw, Wei Chen
On-Site Speaker (Planned) Shahryar Mooraj
Abstract Scope Refractory high entropy alloys (RHEA) are known to be extremely difficult to process due to the high melting points of the constituent elements. Many RHEA systems can also include elements with vastly different melting points like Ti and Ta which can lead to large freezing range with significant chemical segregation. In this talk I will outline a laser additive manufacturing method to process TiTaZrNb alloy which shows superior mechanical properties to the as-cast counterpart. The printed alloy also shows more homogeneous elemental distribution, reducing the need for post-processing treatments like homogenization. I will also detail how we used synchrotron x-ray diffraction to explore the different mechanical behaviors of the 3D-printed and as-cast alloys, and the microstructural origin of such mechanical behavior difference.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, Mechanical Properties, Titanium


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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