|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||High Entropy Alloys VIII
||Thermal Transport Calculation of High Entropy Alloys for Thermoelectric Applications
||Seungha Shin, Md Abdullah Al Hasan, Jiaqi Wang, Yu-Kai Weng, Dustin Gilbert
|On-Site Speaker (Planned)
Desirable thermal transport and phase stability of High Entropy Alloys (HEAs) are critical for aerospace, energy, transportation, and manufacturing applications which require excellent performance, reliability, and efficient high-temperature thermoelectric properties in extreme operating conditions. In our study, for effective thermal transport control in HEA, we investigated three topics: (1) mass and interaction mismatch effect on the thermal conductivity and phonon density of states (PDOS). Thermal conductivity and PDOS can be altered by various mass distribution, resulting from various scattering rate of phonons; (2) disorder quantification in HEA. Structural and compositional disorder reduces thermal conductivity and thus the quantification is crucial for the selection of elements of HEA; (3) prediction of phase formation of different HEA’s. Various thermoelectric properties (i.e., Seebeck coefficient, electrical conductivity, and figure-of-merit etc.) are unraveled and a model for prediction of HEA are developed.
||Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume