|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Materials for High Temperature Applications: Next Generation Superalloys and Beyond
||Accelerated Discovery and Development of Intermetallic-containing Refractory-based Multi-principal-component Alloys
||Michael S Titus, Hauke Springer, Fritz Körmann, Blazej Grabowski, Dierk Raabe
|On-Site Speaker (Planned)
||Michael S Titus
Recently, new refractory-based high entropy alloys (HEAs) have been investigated for potential use as high temperature structural alloys, and some alloys exhibit excellent high temperature strength and ductility. While the high entropy alloy community is generally concerned with obtaining single phase solid-solution phases, secondary strengthening phases are usually required to achieve an adequate balance of mechanical and physical properties for structural applications. An elemental palette of Mo-Nb-Hf-Ta-Ti-V-W-Zr was chosen in order to promote the formation of a single body-centered cubic (BCC) solid-solution phase upon solidification, which facilitates homogenization heat treatments. Al, Cr, and Si were also included to promote secondary phase formation. Silicide and Laves phases were observed to be the most prevalent intermetallic phases. Preliminary compression and tensile tests of selected alloys will be presented along with our recent progress towards rapid alloy prototyping using unique suction casting processes.