| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Innovations in High Entropy Alloys and Bulk Metallic Glasses: An SMD & FMD Symposium in Honor of Peter K. Liaw
|
| Presentation Title |
Element Effects of CoCrFeNi-based High-entropy Alloys on Low-cycle Fatigue |
| Author(s) |
E-Wen Huang, Che-Wei Tsai, An-Chou Yeh, Soo Yeol Lee, Stefanus Harjo, Peter K. Liaw, Tu-Ngoc Lam, You-Shiun Chou |
| On-Site Speaker (Planned) |
E-Wen Huang |
| Abstract Scope |
Two equal-molar, face-centered-cubic, high-entropy alloy systems are measured by in-situ neutron-diffraction experiments subjected to continuous tension-compression cyclic loading at room temperature. With spallation neutron, the evolutions of multiple diffraction peaks are collected simultaneously in the axial loading direction and radial direction of the cylindrical dog-bone specimen for lattice-strain measurement and peak profile analysis. Recorded temperature variations during fatigue cycles are compared with the thermodynamics-model predictions based on lattice structural changes. The discrepancy between the modeled and measured temperature evolution indicates the evolution of the microstructure during fatigue deformation, which is validated from the microscopic examination. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |