|About this Abstract
||3rd World Congress on High Entropy Alloys (HEA 2023)
||Synthesis & Characterization of Bulk Materials Towards the Development of Spinodally-hardened, Superhard High Entropy Ceramics
||Christopher Desalle, Caillin Ryan, Ryan Crealese, Simon Divilov, Hagen Eckert, Stefano Curtarolo, Douglas Wolfe
|On-Site Speaker (Planned)
The increasing demand for materials that exhibit superior thermomechanical and thermochemical properties during extreme environment operation is driven by applications such as aerospace/hypersonic vehicles, friction stir welding, and machining. High entropy ceramic alloys have garnered significant interest due to a combination of solid-solution strengthening, phase stability control, and precipitation hardening effects via coherent spinodal decomposition. With a focus on the synthesis, analytical characterization, and performance evaluation of bulk materials, experimental advances have been achieved in relation to the development of spinodally-hardened, superhard high entropy ceramics. Attrition milling studies of various constituent ceramic nanoparticles for subsequent consolidation via field-assisted sintering technology (FAST) with in-situ heat treatments have enabled the synthesis of high entropy carbonitrides. This study highlights and deconvolutes the phase dependence of elasto-plasticity while introducing in-situ sintering heat treatments to realize the effects of spinodal nucleation and decomposition on phase evolution and mechanical properties.
||Planned: Metallurgical and Materials Transactions