| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys IV: Mechanical Behavior
|
| Presentation Title |
Single-Crystal Mechanical Properties of FCC High-Entropy Alloys |
| Author(s) |
Haruyuki Inui, Kyosuke Kishida, Le Li, Zhenghao Chen |
| On-Site Speaker (Planned) |
Kyosuke Kishida |
| Abstract Scope |
The plastic deformation behavior of single crystals of the FCC equatomic CrMnFeCoNi high-entropy alloy and its derivative equatomic quaternary and ternary medium-entropy alloys has been investigated in a temperature range of 10-1273 K. The CRSS values increase with decreasing temperature, especially below room temperature. The CRSS values extrapolated to 0 K for these single crystals are well scaled with the mean-square atomic displacement of the constituent elements from the regular FCC lattice points. The occurrence of short-range ordering was confirmed in CrCoNi through the measuring of electrical resistivity, while conventional x-ray and electron diffraction failed to detect short-range ordering. The extent of short-range ordering in CrCoNi was proved to be the largest after annealing at 673 K. However, no significant variation of the CRSS values, twinning stress and the stacking-fault energy was noted upon the formation of short-range order by heat-treatment. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Mechanical Properties, |