| About this Abstract |
| Meeting |
2010 TMS Annual Meeting & Exhibition
|
| Symposium
|
2010 Functional and Structural Nanomaterials: Fabrication, Properties, Applications and Implications
|
| Presentation Title |
Structural Properties of Nanostructured Fe-Co-V Prepared by Mechanical Alloying and Spark Plasma Sintering |
| Author(s) |
Baolong Zheng, Randy K. Dumas, Asit Biswas, Yizhang Zhou, Kai Liu, Dean Baker, Enrique J. Lavernia |
| On-Site Speaker (Planned) |
Baolong Zheng |
| Abstract Scope |
FeCo-based soft magnetic materials, having the high saturation magnetization and high Curie temperatures, are ideal for high-temperature applications. Mechanical and magnetic properties of these soft magnetic materials can be further improved by grain size refinement. In this study, nanocrystalline Fe-Co-V soft magnetic alloy powders with an average grain size of 20nm were prepared by severe plastic deformation via high-energy mechanical alloying. XRD analysis showed that bcc-FeCo solid solution was formed after 8 hours of milling. Spark Plasma Sintering (SPS) was used to fabricate bulk nanostructured magnets, whose saturation magnetization, about 229emu/g, is noticeably higher than that of as-milled powders. Characterization techniques including SEM, XRD, DSC, and TEM were used to study the microstructural evolution of both milled powder and SPS consolidated samples under various processing conditions. Magnetic and mechanical properties were measured and further analysis was conducted with emphasis on the relationship among the constitution, processing, microstructure and properties. |
| Proceedings Inclusion? |
Undecided |