|About this Abstract
||1st World Congress on High Entropy Alloys (HEA 2019)
||High Entropy Alloys 2019
||High Temperature Strengthening from High Entropy Precipitates
||An-Chou Yeh, Yung-Ta Chen, Hideyuki Murakami, Taisuke Sasaki, Kazuhiro Hono, Chen-Wei Li, Koji Kakehi
|On-Site Speaker (Planned)
This talk will present precipitation strengthening from high entropy phase in a high entropy superalloy (HESA). HESA is a Ni-rich high entropy alloy, which contains high entropy FCC matrix and medium entropy L12 precipitates. With modification of heat treatment process, additional strengthening mechanism can be induced by formation of high entropy precipitates. Detailed microstructural characterization has been conducted, including advanced atom probe tomography. Notably, high temperature tensile properties of high entropy precipitates bearing HESA can surpass not only those of the reported HEAs, but also some advanced superalloys. This work presents a possible template for the design of future high temperature alloys with improved cost-performance.