| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Entropy Alloys VIII
|
| Presentation Title |
In-situ Neutron Diffraction Study of the Mechanical Properties of Al0.7CoCrFeNi High Entropy Alloy |
| Author(s) |
Daeho Yun, Hobyung Chae, Taegyu Lee, Ho Jin Ryu, Bharat Gwalani, Rajarshi Banerjee, Soo Yeol Lee |
| On-Site Speaker (Planned) |
Soo Yeol Lee |
| Abstract Scope |
Recently, multi-phases high entropy alloys (HEAs) were developed to enhance the mechanical properties in terms of strength and ductility. In this work, the two types of Al0.7CoCrFeNi HEA were prepared: 1) solid-solution-strengthened HEA in which the alloy was heat-treated at 1100°C followed by air cooling, and 2) precipitation-hardened HEA in which the alloy was heat-treated at 1100°C followed by air cooling, then aging treatment at 580°C for 24 h followed by air cooling. In-situ neutron diffraction was employed to investigate the mechanical behavior of both alloys at room temperature. Evolution of the entire diffraction patterns recorded during applied stress enabled us to examine the development of lattice strains, texture, and localized microstructure during deformation. More specifically, stress partitioning between soft face-centered cubic (FCC) phase and hard body-centered cubic (BCC)/B2 phase is highlighted. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume |