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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Additive Manufacturing of Refractory Metallic Materials
Presentation Title Thermal-chemical-fluid Flow of Dissimilar Species Mixing between Titanium and Refractory Metals
Author(s) Junji Shinjo, Chinnapat Panwisawas
On-Site Speaker (Planned) Junji Shinjo
Abstract Scope Refractory metals are used for aerospace, nuclear and biomedical applications due to the temperature-resistant and bio-compatible nature. However, chemical species mixing is one of the issues in additive manufacturing (AM) of refractory metals. In this study, mixing characteristics are investigated for Ti and refractory metals (Zr, Nb, Mo, Hf, Ta, W) using direct energy deposition in which several processing parameters are investigated. It is revealed that the convective effect in the melt pool has a significant impact on mixing, where the local viscosity is important in determining the flowability. Higher-temperature molten metal has a smaller viscosity and thus mixing is better. The local temperature control is complicated due to the interaction between convection, vapourisation and heat transfer with temperature-dependent thermophysical properties. Here, several simulation cases are presented to indicate that digital materials design based on high-fidelity thermal-chemical-fluid flow simulation is a powerful tool in predicting the dynamic behavior in AM.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, Computational Materials Science & Engineering, Modeling and Simulation


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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