| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
High Entropy Materials: Concentrated Solid Solutions, Intermetallics, Ceramics, Functional Materials and Beyond V
|
| Presentation Title |
Mechanical Properties and Structural Relaxation Upon Heating of Nanostructured High-Entropy Alloys |
| Author(s) |
Megumi Kawasaki |
| On-Site Speaker (Planned) |
Megumi Kawasaki |
| Abstract Scope |
This presentation explores the significance of nanostructuring in single-phase solid solution high entropy alloys (HEAs), specifically focusing on CoCrFeNi HEAs. Nanostructuring, achieved through high-pressure torsion processing, enhances mechanical properties by altering microstructure. The feasibility of grain refinement at room temperature in HEAs with sluggish diffusion is evaluated using nanoindentation, alongside detailed structural analysis conducted with lab-scale X-ray diffraction. Moreover, the enhanced hardness until recrystallization of the nanostructured alloy is observed through in-situ heating neutron diffraction and hardness observations. Additionally, High-temperature laser confocal microscopy provides visualization of the large-scale relaxation of the non-homogeneously strained nanostructure during heating. This study underscores the potential of nanostructuring to advance HEA microstructure design. |