| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Entropy Alloys IX: Alloy Development and Properties
|
| Presentation Title |
Deformation Twinning in FCC High- and Medium-entropy Alloys |
| Author(s) |
Haruyuki Inui, Koudai Niitsu, Kyosuke Kishida |
| On-Site Speaker (Planned) |
Haruyuki Inui |
| Abstract Scope |
High-entropy alloys (HEAs) comprise a novel class of scientifically and technologically interesting materials. Among these, equatomic CrMnFeCoNi and its derivative quaternary and ternary alloys with the FCC structure are noteworthy because their strengths are by far higher than those of conventional FCC alloys and their tensile ductility increases with decreasing temperature while maintaining outstanding fracture toughness. Most of these high- and medium-entropy alloys are known to possess a stacking-fault energy and hence to twin at low temperatures, contributing outstanding fracture toughness. We investigate the deformation twinning behavior of single crystals of these high- and medium-entropy alloys as a function of temperature and crystal orientation, to see how these parameters as well as stacking-fault energy affect the twinning behavior such as the twinning (initiation) stresses and strains to be accumulated prior to twining. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Mechanical Properties, Characterization |