| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys II
|
| Presentation Title |
J-37: High-density Nanoscale L12 Phase Strengthened FeNiCr-based Medium Entropy Alloys |
| Author(s) |
Guanghui Yang, Jinkyung Kim |
| On-Site Speaker (Planned) |
Guanghui Yang |
| Abstract Scope |
Coherent nanoprecipitation strengthened high entropy alloys (HEAs) exhibit considerably higher strength than the single-phase HEAs. However, the simultaneous achievement of ultrahigh strength and acceptable ductility is still challenging. The present work reports microstructures and mechanical properties of (Al, Ti)-added FeNiCr based medium entropy alloys. We focus on the evolution of microstructure and mechanical properties for each processing condition such as casting, hot rolling, homogenization, cold-rolling, and annealing. The high density of the nanoscale L12 phase was formed after cold-rolling and annealing. The density of the precipitates increases with increasing cold-rolling reduction probably due to nucleation of the precipitates at the defects formed upon cold-rolling. Further, partially recrystallized microstructures with fine grain size and a high density of precipitates could lead to superior strength-ductility balance of the material. We will discuss the microstructure-mechanical properties relationship of the investigated materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Characterization, High-Entropy Alloys |