About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetism and Magnetic Materials
|
| Presentation Title |
Forming Strategies of La-Based Magnetocaloric Alloys for Active Magnetic Regenerative Cooling Systems |
| Author(s) |
Da Seul Shin, Seon Yeong Yang, Min Jik Kim, Woo Seok Yang, Ki Hoon Kang, Kookchae Chung, Jong-Woo Kim |
| On-Site Speaker (Planned) |
Da Seul Shin |
| Abstract Scope |
Magnetocaloric-based solid-state cooling technology is among the most advanced and commercially promising alternatives to conventional refrigeration. Despite its energy efficiency and environmental benefits, practical deployment still faces challenges in component fabrication and module integration. This study reports progress in shaping La-based magnetocaloric materials for integration into active magnetic regenerators. To fabricate suitable components, we developed two complementary forming techniques: hot rolling for thin plates and extrusion-based 3D printing for complex scaffolds. Both approaches successfully stabilized the NaZn₁₃-type (1:13) phase. Notably, the thin plate with composition La1.05Fe11.2Co0.7Si1.38 benefited from a two-step heat treatment, which reduced rolling defects and enhanced magnetic properties. The optimized material exhibited a Curie temperature of ~266 K, a peak magnetic entropy change (ΔSₘ) of 8.76 J·kg⁻¹·K⁻¹, a broad temperature window (δTFWHM≈21 K), and a relative cooling power of ~182 J·kg⁻¹. These characteristics stem from a second-order phase transition, minimizing thermal hysteresis and enabling stable cyclic operation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, Shaping and Forming, Energy Conversion and Storage |