|About this Abstract
||3rd World Congress on High Entropy Alloys (HEA 2023)
||Thermomechanical Processing Maps and Microstructure Characterization of Cr-containing Refractory Complex Concentrated Alloys
||Nelson Delfino De Campos Neto, John J Rotella, Todd Butler, Samuel J Kuhr, Matthew Snyder, Nathan E Peterson, Benjamin Ellyson, Francisco G Coury, Kester D Clarke, Amy J Clarke
|On-Site Speaker (Planned)
||Nelson Delfino De Campos Neto
Refractory complex concentrated alloys (RCCAs) are a new class of metallic alloys under development for high-temperature performance. Cr-containing RCCAs can present a good combination of mechanical properties, suitable oxidation resistance, and perhaps even be compatible with coatings. Unlike single-phase, body centered cubic (BCC) RCCAs, these alloys tend to contain multiple phases, depending upon the constituent elements. For example, CrNb, CrNbTi, and CrNbTaTi RCCAs containing BCC + Laves (C15) phases have revealed promising mechanical properties and oxidation behaviors up to 1200 °C. But, the reduced ductility at room temperature and the sluggish diffusion leading to microstructural inhomogeneities still need to be overcome to produce consistent microstructures in bulk. Significant opportunity exists to tailor the microstructures and properties of multiphase Cr-containing RCCAs by thermomechanical processing. Here we report our recent progress in the development of thermomechanical processing maps and microstructural characterization of Cr-containing RCCAs for high-temperature applications.
||Planned: Metallurgical and Materials Transactions