| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials 2024: Process-Structure-Property Relations and New Technologies
|
| Presentation Title |
Development of NiMn-based Shape Memory Alloys with Enhanced Elastocaloric Properties for Solid-state Cooling Applications |
| Author(s) |
Francesca Villa, Pietro Ruggieri, Michela Tamandi, Lara Righi, Francesca Passaretti, Riccardo Casati, Elena Villa |
| On-Site Speaker (Planned) |
Francesca Villa |
| Abstract Scope |
The use of caloric materials for solid-state cooling applications is a promising alternative to the traditional refrigeration technologies based on vapor compression. One of the most promising class of elasto-caloric materials are the superelastic shape memory alloys (SMAs) and significant performances are given by the NiMnTi-based alloys. Another interesting class of caloric materials are the ferromagnetic SMAs (FeSMAs) that present good magnetic properties, including magnetocaloric ones, but their mechanical behavior is quite poor due to their intrinsic brittleness. In this work, some NiMn-based SMAs and FeSMAs are developed to optimize the elasto-caloric performances in terms of adiabatic ΔT generated and cyclic structural and functional response. This is provided by the optimization of the fabrication methods and thermomechanical processes. Then, the analysis of calorimetric, structural and microstructural properties of the produced alloys is performed together with the functional characterization and the assessment of the elasto-caloric performance through direct adiabatic ΔT measurements. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Phase Transformations, Characterization |