| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys II
|
| Presentation Title |
J-53: Microstructure and Hardness of (CoCrCuTi) 100-x Fex with Duplex Hexagonal-Cubic Multi Principal Element Alloys |
| Author(s) |
Brittney N. Terry, Reza Abbaschian |
| On-Site Speaker (Planned) |
Brittney N. Terry |
| Abstract Scope |
In this presentation, we report on the influence of Fe additions on the microstructure and properties of (CoCrCuTi) 100-x Fex Multiprincipal Element Alloys containing 5, 10, 15, and 20% Fe. The alloys were prepared by arc melting and electromagnetic levitation processing. The CoCrCuTi alloy with additions of less than approximately 20% Fe shows a primary dendritic hexagonal Laves C14 phase with an FCC Cu- rich interdendritic matrix, similar to those observed with additions of Mn. Small Ti- rich dendrites are also observed throughout the material. When Fe addition is increased beyond 20%, liquid phase separation of an FCC Cu- rich phase is observed. The HCP dendritic phase was found to have high hardness, approaching ~1000 HV, yet they have low toughness. Cooling rate and melt stirring effects on the dendritic microstructure and toughness are also presented. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Mechanical Properties, Solidification |