Leveraging Mechanical Resonances for the Selection of Promising Materials in Complex Phase Spaces

The exploration of high-entropy alloys presents a vast compositional design space that challenges conventional trial-and-error synthesis paradigms. While computational models assist in navigating these complex phase spaces, experimental validation remains a critical bottleneck. This research direction addresses the challenge by utilizing non-destructive mechanical resonance measurements to rapidly characterize elastic properties of novel refractory high-entropy alloys, specifically focusing on W-Ta-Cr-V-Hf and Mo-Nb-Ti-V-Zr systems. By measuring the resonant frequencies of synthesized specimens, the methodology enables the precise determination of elastic constants, providing high-accuracy empirical data to benchmark and refine predictive computational models. The implementation framework involves simulating modal frequencies using finite element analysis, processing experimental resonance spectra, and executing inverse optimization algorithms

to extract shear and Young's moduli. This approach offers a fast, economical, and non-destructive alternative to conventional destructive tensile testing, facilitating high-throughput screening of candidate materials. The proposed research guidance supports the development of robust evaluation protocols to accelerate the discovery and selection of high-performance structural materials for extreme engineering environments.

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