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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Advanced Real Time Imaging
Presentation Title In-situ Observation of Phase Transformations in Co-based Dual Phase Entropic Alloys Using High Temperature Confocal Laser Scanning Microscopy
Author(s) Wangzhong Mu, Wei Wang, Ziyong Hou, Sohei Sukenaga, Hiroyuki Shibata, Henrik Larsson, Huahai Mao
On-Site Speaker (Planned) Wangzhong Mu
Abstract Scope Entropic alloys, an extended definition of high entropy alloys (HEAs) is a new family of alloy grades which has attracted the attention of the community progressively during the past decade. Co-based dual phase entropic alloys (DP-EAs) including fcc and hcp structure are designed very recently to overcome the strength-ductility trade-off, due to a combination of outstanding yield strength and good ductility. In this work, high temperature confocal laser scanning microscopy (HT-CLSM) is applied to observe the athermal martensitic transformation in Co-based DP-EAs. It is the first time to provide an in-situ real observation study to investigate the phase transformation in the entropic alloys using HT-CLSM. A correlation between martensite starting temperature and its fraction could be found, and the morphology and nucleation sites for martensite formation is discussed. This current methodology as well as the obtained knowledge could be applied for a comprehensive fundamental study for high entropy alloy design.
Proceedings Inclusion? Planned:
Keywords Characterization, High-Entropy Alloys,


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