About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Advances in Multi-Principal Element Alloys II
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Presentation Title |
Effect of High-pressure and Shear Strainig on FCC-HCP Transformation in Cr20Mn20Fe20Co40-xNix High Entropy Alloys |
Author(s) |
Koichi Tsuchiya, Jangho Yi, Sangmin Lee, Masashi Miyakawa |
On-Site Speaker (Planned) |
Koichi Tsuchiya |
Abstract Scope |
CrMnFeCoNi alloys are the best-known FCC-based high-entropy alloys and are known to exhibit high strength and ductility at cryogenic temperatures. Zhang et al. reported that this alloy transforms to HCP under hydrostatic pressure of 25 GPa at room temperature (F. Zhang et al., Nature Comm.,8(2017)15687). In this presentation, we will report FCC-HCP transformation in Cr20Mn20Fe20Co40-xNix alloys induced by hydro-static pressure up to 9.4 GPa using a belt-type high-pressure generator, and compare with the results of shear straining under pressure by high-pressure torsion. It was revealed that the increasing pressure stabilize the HCP phase, which agrees with the predication by thermodynamic calculation |
Proceedings Inclusion? |
Planned: |