About this Abstract |
Meeting |
MS&T23: Materials Science & Technology
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Symposium
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High Entropy Materials: Concentrated Solid Solutions, Intermetallics, Ceramics, Functional Materials and Beyond IV
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Presentation Title |
F-2: Additive Manufacturing feasibility of MoNbTi Refractory Complex Concentrated Alloys |
Author(s) |
Abdulquadri Tobi Oriola, Ravi Kumar, Ugochukwu Ochieze, Sravya Josyula, Balbus Glenn, Ashley Paz y Puente, Eric Payton |
On-Site Speaker (Planned) |
Abdulquadri Tobi Oriola |
Abstract Scope |
Refractory complex concentrated alloys (RCCAs) have gained attention in recent years for their exceptional strength at high temperatures. The same qualities that are exciting for potential applications result in these alloys being difficult to process by conventional wrought methods, as they exhibit exceptional strength and hardness at typical thermo-mechanical processing temperatures. To circumvent these challenges, LPBF is a promising approach, but it’s necessary to investigate the susceptibility to cracking upon rapid cooling and effects of additive processing on microstructure homogeneity. The present work aims to process MoNbTi RCCAs by LPBF additive manufacturing. CALPHAD predictions will be used to estimate the freezing ranges, the possible phases and alloy composition at various temperature ranges. LPBF manufacturability will be experimentally investigated by performing laser glazing trials on vacuum arc melted buttons of MoNbTi. The laser tracks and resulting microstructure will be analyzed using Scanning Electron Microscopy, Electron Backscatter Diffraction, and Energy Dispersive Spectroscopy. |