About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Deformation and Damage Mechanisms of High Temperature Alloys
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Presentation Title |
Tensile Ductility and Plastic Deformation Behavior of Polycrystalline Refractory Multi-principal Element Alloys |
Author(s) |
Leah H. Mills, Jean-Charles Stinville, Marie-Agathe Charpagne, Carolina Frey, Valéry Valle, Noah P. Philips, Daniel S. Gianola, Tresa M. Pollock |
On-Site Speaker (Planned) |
Leah H. Mills |
Abstract Scope |
The high temperature strength of Refractory Multi-Principal Element Alloys (RMPEAs) is promising for extreme structural applications. However, ambient temperature tensile ductility is also important for processability. Microstructure development along cold-rolling and annealing processing paths and the mechanical performance of the RMPEAs Hf20Nb20Ta20Ti20Zr20 and Hf10Nb35Ta30Ti25 are investigated. These two compositions were amenable to cold-rolling and the resulting fully recrystallized and single-phase microstructures are compared. Characterization of plastic deformation behavior in these polycrystalline materials by High-Resolution Digital Image Correlation (HR-DIC) in the scanning electron microscope is employed to investigate the heterogeneity of dislocation slip on a grain-to-grain basis, and locally at the scale of individual slip traces, as well as its relationship to macroscopic tensile properties. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Mechanical Properties, Characterization |