About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Materials
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Presentation Title |
Exploring the Structure-property Relationships of W<sub>x</sub>CoCrFeMnNi Graded High Entropy Alloy |
Author(s) |
Jonathan W. Pegues, Michael Melia, Benjamin Gould, Raymond Puckett, Shaun Whetten, Nicolas Argibay, Tomas Babuska |
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 is screened to establish first order structure-property relationships. Compact metallurgical W<sub>x</sub>CoCrFeMnNi specimens spanning x = 0 – 20% at. fractions were fabricated utilizing in-situ alloying enabled by powder based directed energy deposition. Microstructure evolution as a function of specific W<sub>x</sub>CoCrFeMnNi compositions were 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? |
Definite: Post-meeting proceedings |