About this Abstract |
Meeting |
2nd World Congress on High Entropy Alloys (HEA 2021)
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Symposium
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2nd World Congress on High Entropy Alloys (HEA 2021)
|
Presentation Title |
Processing Pathways and Tensile Ductility of Polycrystalline Refractory Multi-principal Element Alloys |
Author(s) |
Leah H. Mills, Jean-Charles Stinville, Marie-Agathe Charpagne, Carolina Frey, Noah P. Philips, Valéry Valle, 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 but presents challenges for thermomechanical processing of this class of materials. This motivates novel methods of generating thin film and bulk specimens for evaluation of ambient temperature tensile ductility, including splat quenching and hot compressing arcmelted specimens using a spark plasma sintering system. Microstructure development along these processing paths and the mechanical performance of the RMPEAs HfNbTaTiZr and MoNbTi are investigated. Characterization of plastic deformation in these polycrystalline materials by High-Resolution Digital Image Correlation (HR-DIC) 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? |
Undecided |