|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||High Entropy Alloys VIII
||J-132: The Development of High Performance Hybrid High Entropy Alloys(HEAs)
||Weicheng Heng, Daixiu Wei, Hidemi Kato, Akihiko Chiba
|On-Site Speaker (Planned)
The high phase stability and excellent mechanical properties of high entropy alloys (HEAs) give them great potential for use, particularly as structural materials. However, because the advantages of these alloys are limited to a small temperature range, they are not suitable for use without significant modifications. The focus of this study was the design of a new series of hybrid high entropy alloys capable of maintaining their characteristics over a wide temperature range by combining two types of conventional HEAs. A series of three hybrid high entropy alloys, (CoCrFeNi)100-x(TaNbMoW)x (x=2, 4, 6) was fabricated. Their microstructure was examined by SEM and EBSD, and the composition of the precipitates and the interface between matrix and precipitates was examined by TEM. These hybrid HEAs were found to have higher strength at room temperature and less strength loss at elevated temperatures than conventional HEAs under the same condition.
||Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume