Phase dependence of the Thermal Memory Effect in Polycrystalline Ribbon and Bulk Ni55Fe19Ga26 Heusler Alloys
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2025
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| author | Vidal-Crespo, Antonio Manchón-Gordón, Alejandro F. Martín-Olalla, José María Romero, Francisco Javier Ipus, Jhon J Gallardo, María del Carmen Blázquez, Javier Sebastián Conde, Clara F |
| author_facet | Vidal-Crespo, Antonio Manchón-Gordón, Alejandro F. Martín-Olalla, José María Romero, Francisco Javier Ipus, Jhon J Gallardo, María del Carmen Blázquez, Javier Sebastián Conde, Clara F |
| contents | <p>This share link points to the Version of Record and is available until 2025/03/31 <a href="https://authors.elsevier.com/c/1kaJd3RtPt5xsR" target="_blank" rel="noopener">https://authors.elsevier.com/c/1kaJd3RtPt5xsR</a></p> <p>The thermal memory effect, TME, has been studied in Ni55Fe19Ga26 shape memory alloys, fabricated as ribbons via melt-spinning and as pellets via arc-melting, to evaluate its dependence on the martensitic structure and the macrostructure of the samples. When the reverse martensitic transformation is interrupted, a kinetic delay in the subsequent complete transformation is only evident in the ribbon samples, where the 14M modulated structure is the dominant phase. In contrast, degradation of the modulated structure or the presence of the phase significantly reduces the observed TME. In such cases, the magnitude of the TME approaches the detection limits of commercial calorimeters, and only high-resolution calorimeter at very low heating rate (40 mK/h) can show the effect. Following the kinetic arrest and subsequent cooling, the reverse martensitic transformation was completed at several heating rates to confirm the athermal nature of the phenomenon.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_14842616 |
| institution | Zenodo |
| language | eng |
| publishDate | 2025 |
| publisher | Zenodo |
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| spellingShingle | Phase dependence of the Thermal Memory Effect in Polycrystalline Ribbon and Bulk Ni55Fe19Ga26 Heusler Alloys Vidal-Crespo, Antonio Manchón-Gordón, Alejandro F. Martín-Olalla, José María Romero, Francisco Javier Ipus, Jhon J Gallardo, María del Carmen Blázquez, Javier Sebastián Conde, Clara F martensitic transformation thermal memory effect Shape Memory Alloys Ni-Fe-Ga heusler alloys ultraslow calorimetry <p>This share link points to the Version of Record and is available until 2025/03/31 <a href="https://authors.elsevier.com/c/1kaJd3RtPt5xsR" target="_blank" rel="noopener">https://authors.elsevier.com/c/1kaJd3RtPt5xsR</a></p> <p>The thermal memory effect, TME, has been studied in Ni55Fe19Ga26 shape memory alloys, fabricated as ribbons via melt-spinning and as pellets via arc-melting, to evaluate its dependence on the martensitic structure and the macrostructure of the samples. When the reverse martensitic transformation is interrupted, a kinetic delay in the subsequent complete transformation is only evident in the ribbon samples, where the 14M modulated structure is the dominant phase. In contrast, degradation of the modulated structure or the presence of the phase significantly reduces the observed TME. In such cases, the magnitude of the TME approaches the detection limits of commercial calorimeters, and only high-resolution calorimeter at very low heating rate (40 mK/h) can show the effect. Following the kinetic arrest and subsequent cooling, the reverse martensitic transformation was completed at several heating rates to confirm the athermal nature of the phenomenon.</p> |
| title | Phase dependence of the Thermal Memory Effect in Polycrystalline Ribbon and Bulk Ni55Fe19Ga26 Heusler Alloys |
| topic | martensitic transformation thermal memory effect Shape Memory Alloys Ni-Fe-Ga heusler alloys ultraslow calorimetry |
| url | https://doi.org/10.5281/zenodo.14842616 |