Journal article
An experimentally driven high-throughput approach to design refractory high-entropy alloys
Materials & design, v 223(C), 111259
Nov 2022
Abstract
[Display omitted]
•Development of experimentally driven, high-throughput, high-entropy alloy design strategy via physical vapor deposition (PVD) technique.•The yield strength and ductility of these 63 Nb-Ti-V-Zr HEAs were quantitatively determined, calculating the two major solid-solution strengthening components (atomic-size and elastic-modulus mismatches) and d-parameters.•Down-selection of the compositions, which would potentially exhibit optimized mechanical properties (high strength and good ductility) in Nb-Ti-V-Zr HEA systems via high-throughput alloy manufacturing, theoretical predictions, and experimental approaches.
High-entropy alloy (HEA) design strategies have been limited to theoretical/computational approaches due to their compositional complexity and extremely large compositional parameter space. In this work, we developed an experimentally driven, high-throughput, HEA design approach using a physical vapor deposition (PVD) technique and coupled it with nanomechanical testing to accelerate material design for structural applications. The PVD technique enabled the formation of a compositional gradient across a thin-film sample. Specifically, a 10 cm wafer was used to manufacture a continuous set of 80 HEA compositions within the Nb-Ti-V-Zr family using a single deposition cycle. By using the solid-solution strengthening theory and estimated parameter properties, the strength and ductility of these HEA compositions were quantitatively determined/predicted and then experimentally verified by nano-indentation hardness test. Consequently, 7 refractory HEA compositions were successfully down-selected, which has a high propensity to have a balanced mechanical property.
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18 citations in Scopus
Details
- Title
- An experimentally driven high-throughput approach to design refractory high-entropy alloys
- Creators
- Chanho Lee - Los Alamos National LaboratoryDongyue Xie - Center for Integrated NanotechnologiesBenjamin Kyle Derby - Los Alamos National LaboratoryJon Kevin Baldwin - Los Alamos National LaboratoryChristopher Tandoc - Drexel UniversityOsman EI Atwani - Los Alamos National LaboratoryYong-Jie Hu - Drexel UniversityJames A. Valdez - Los Alamos National LaboratoryNan Li - Center for Integrated NanotechnologiesSaryu J. Fensin - Los Alamos National Laboratory
- Publication Details
- Materials & design, v 223(C), 111259
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Scopus ID
- 2-s2.0-85140734483
- Other Identifier
- 991021931902004721