| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
High Entropy Materials: Concentrated Solid Solution, Intermetallics, Ceramics, Functional Materials and Beyond
|
| Presentation Title |
Investigating Multi-principal-element Alloys (MPEAs) at Larger Scales: From Melt Processing to New Design Approaches |
| Author(s) |
Martin Detrois, Kyle A Rozman, Michael C Gao, Paul D Jablonski, Jeffrey A Hawk |
| On-Site Speaker (Planned) |
Martin Detrois |
| Abstract Scope |
While a large number of recent investigations on high-entropy alloys (HEAs) or multi-principal-element alloys (MPEAs) focus on high throughput characterization and testing, there is a growing need to assess the potential at using this class of alloys in structural applications. Typical melt processing techniques using vacuum induction melting (VIM) were employed to produce 7-10 kg ingots that can be tested using ASTM standards for tension and creep after being forged and hot rolled into plates. Creep results from the cast and wrought HEAs were compared to commercial steels and superalloys and discussed relative to the new design approaches. The alloys designed and tested in house ranged from traditional HEAs to MPEAs and high-entropy superalloys and revealed the importance of good fabricability alongside properties and cost considerations. Finally, challenges associated with the typical industrial melt processing technique VIM followed by electroslag remelting (ESR) will be discussed using ~75 kg HEA ingots. |