About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetism and Magnetic Materials
|
| Presentation Title |
Solid-State Processing of SmCo5-Based Magnets via Combined Shear and Thermal Activation for Structural and Magnetic Integration |
| Author(s) |
Farhan Ishrak, Emmanuel Aikulola, Md Jasim Uddin, Michael Lastovich, Fu-Yun Tsai, Bharat Gwalani |
| On-Site Speaker (Planned) |
Farhan Ishrak |
| Abstract Scope |
We explore scalable, sintering-free strategies to develop high-coercivity SmCo5-based magnets through solid-state bulk processing. Conventional sintering often induces interfacial reactions and secondary phases, compromising functionality. To address this, we investigate three complementary thermomechanical routes: (i) frictional shear consolidation of SmCo5/Sm2Co7 powders for in situ phase transformation, (ii) high-pressure torsion (HPT) of SmCo5–Al systems for grain refinement and magnetic decoupling, and (iii) solid stir extrusion (SSE) of Al–SmCo5 composites for structural integration. Applying severe plastic deformation in conjunction with thermal activation, we directly drive grain size refinement, interfacial chemical transformation, and fragmentation of magnetic particles, contributing to enhanced coercivity and mechanical toughness. The resulting non-equilibrium microstructures disrupt long-range magnetic exchange and spatially isolate domains, enabling coercivity enhancement through reduced magnetic phase connectivity and effective domain wall pinning. We demonstrate solid-state deformation as a route to design structurally integrated magnets with tunable magnetic performance for aerospace, motor, and multifunctional applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, Composites, Aluminum |