ProgramMaster Logo
Conference Tools for 2022 TMS Annual Meeting & Exhibition
Register as a New User
Submit An Abstract
Propose A Symposium
Presenter/Author Tools
Organizer/Editor Tools
About this Abstract
Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Additive Manufacturing of Refractory Metallic Materials
Presentation Title Laser Beam Directed Energy Deposition Process Optimization for Refractory High Entropy Alloys
Author(s) Erin Barrick, Raymond Puckett, Shaun Whetten, Jonathan Pegues, Michael Melia, Remi Dingreville, Sal Rodriguez, Andrew Kustas
On-Site Speaker (Planned) Erin Barrick
Abstract Scope Refractory high entropy alloys (RHEAs) are emerging materials that have attracted attention for exceptional properties, such as high melting temperatures, retention of high-strength at elevated temperature, and resistance to degradation in harsh environments. Recently, additive manufacturing (AM) has been used to rapidly screen novel RHEA compositions for fabricability, microstructure, and properties. Comparatively less attention has been devoted to optimizing printing process parameters to produce defect-free parts. In this study, laser beam directed energy deposition was used to fabricate compact metallurgical specimens using various processing parameters (e.g., laser power, scan velocity) for alloys containing Mo, Nb, Ta, Ti, V, and W constituents. Microstructural characterization was accomplished using scanning electron microscopy, including electron backscattered diffraction, to understand the effects of processing variables on defect formation. The resulting printing strategies can be adapted to other alloys containing high melting temperature constituents. SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525
Proceedings Inclusion? Planned:
Keywords High-Entropy Alloys, Characterization, Additive Manufacturing


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

Questions about ProgramMaster? Contact