| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Entropy Alloys IX: Alloy Development and Properties
|
| Presentation Title |
High-Entropy Alloys Containing Cu: Effects on Microstructure and Liquid Phase |
| Author(s) |
Reza Abbaschian, Nicholas A. Derimow, Raquel Jaime , Bryan Le |
| On-Site Speaker (Planned) |
Nicholas A. Derimow |
| Abstract Scope |
There has been much progress in the field of high-entropy alloys (HEAs) over the past 17 years. However, there is still uncertainty regarding processing-structure relationships in HEAs, particularly those with Cu. We present on experiments focusing on 3d transition metal HEAs containing Cu and the effects on liquid phase behavior and solidified microstructures. It is observed that depending on alloy combination, Cu can lead to liquid phase separation into Cu-rich and Cu-poor regions, or dendrites surrounded by a relatively soft Cu-rich interdendrites. The alloys with the latter microstructures can be designed such to have dendrites with extremely high hardness surrounded by ductile interdendritic phases, making them suitable for wear applications. For example, CoCrCuTi-X (X=Fe,Mn) contain hexagonal dendritic phases with very high hardness in a Cu-rich interdendritic matrix. These HEAs with Cu will be discussed in order to explore potential applications that could benefit from these multiphase microstructures. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, |