About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Advances in Refractory High Entropy Alloys and Ceramics
|
| Presentation Title |
Commercial Alloys Through a High-Entropy Lens |
| Author(s) |
Daniel B. Miracle, Stéphane Gorsse |
| On-Site Speaker (Planned) |
Daniel B. Miracle |
| Abstract Scope |
There is not yet a compelling first application for a new high entropy alloy (HEA). Here we explore the reasons for this deficiency. We hypothesize that complex, concentrated alloys (CCAs) with three or more principal elements can provide a balance of properties that match or exceed the properties of HEAs with five or more principal elements. We then show that many commercial alloys are already high-performing CCAs. We quantify the compositional distances between commercial alloys, experimental CCAs, and HEAs. This analysis shows that, in many cases, the HEAs and CCAs produced to date have not displaced commercial alloys because the former have sufficient compositional similarity to commercial CCAs already embedded within the latter. This compositional similarity allows commercial CCAs with as few as three principal elements to offer the same benefits previously thought to require HEAs with five or more principal elements. Details of this analysis are presented and discussed. |