| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Materials Design and Alloy Development III -- Super Materials and Extreme Environments
|
| Presentation Title |
Exploring the Structure-property Relationships of the Compositionally Graded WxCoCrFeMnNi High-entropy Alloy |
| Author(s) |
Jonathan W. Pegues, Michael Melia, Benjamin Gould, Raymond Puckett, Shaun Whetten, Nicolas Argibay, Tomas Babuska, Andrew Kustas |
| On-Site Speaker (Planned) |
Jonathan W. Pegues |
| Abstract Scope |
Tungsten has been identified as a promising shielding material for high-temperature applications such as those involving plasma-material interactions. Utilizing an additive manufacturing-enabled high-throughput materials discovery framework, a tungsten graded high-entropy alloy was screened to establish first order structure-property relationships. Compact metallurgical WxCoCrFeMnNi specimens spanning x = 0 – 20 at. % were fabricated utilizing in-situ alloying enabled by powder based directed energy deposition. Microstructure evolution as a function of specific WxCoCrFeMnNi compositions was identified through a combination of XRD/XRF and SEM-EDS/EBSD. Microhardness measurements were also performed to rapidly establish baseline structure-property relationships. Functional composition maps identifying compositions that promote solid solutions, multiple phases, intermetallics, high hardness, and brittleness are discussed in relation to the alloy-specific microstructural characteristics and configurational entropy.
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| Proceedings Inclusion? |
Planned: |