| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alloy Behavior and Design Across Length-Scales: An SMD Symposium Honoring Easo George
|
| Presentation Title |
Fracture Properties of High-entropy Alloys |
| Author(s) |
Bernd Gludovatz, Robert O. Ritchie |
| On-Site Speaker (Planned) |
Bernd Gludovatz |
| Abstract Scope |
Since the concept of high-entropy alloys (HEAs) as materials with at least four or five principal elements in (near)-equiatomic composition was introduced in 2004, this new class of materials has penetrated essentially all materials science-related fields. The main reason for this is that some face-centered cubic alloy compositions have been shown to exhibit outstanding mechanical properties with extraordinary combinations of strength, ductility and fracture toughness, particularly at cryogenic temperatures, whereas certain body-centered cubic refractory compositions display outstanding high-temperature strength. While significant effort has been put into rapid screening and narrowing of the compositional space of HEAs to a manageable scope, there are still only a few metallic alloys have been discovered that push the limits of mechanical performance. Here we review work on some of the most damage-tolerant HEAs discovered to date and discuss the fundamental reasons why their resistance to fracture and subsequent stable crack growth is so exceptional. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Mechanical Properties, Characterization |