| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys II
|
| Presentation Title |
J-59: On the Molten State Processing of Refractory Complex Concentrated Alloys |
| Author(s) |
Calvin H. Belcher, Sakshi Bajpai, Benjamin E MacDonald, Enrique J Lavernia, Diran Apelian |
| On-Site Speaker (Planned) |
Calvin H. Belcher |
| Abstract Scope |
The study of RCCAs has been motivated by their potential for applications which require high temperature strength and stability. Molten state processing of RCCAs through arc melting has been the main processing pathway to produce industrially representative microstructures. However, despite some progress, challenges remain, particularly in controlling impurity elements in RCCAs. Moreover, and perhaps more critically, the influence of impurity elements on the physical behavior of RCCAs is not well understood. In this work, the chemistry of the chamber environment during arc melting was studied using a mass spectrometer. Process methodologies were studied to control impurity gas elements such as oxygen and nitrogen in arc melted RCCAs. Furthermore, by arc melting NbMoTaW and TiNbZr RCCAs in various environments, relationships between RCCA constituents and impurity element absorption were explored. Through mechanical testing, X-Ray diffraction, and electron microscopy, the behavior of impurity elements in various RCCA compositions will be reviewed and discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Process Technology, High-Temperature Materials |