Martensitic transformation and damping capacities of Ni50Mn40–xSn10+x (x = 0–4 at.%) ferromagnetic shape memory alloys
| Autor: | Chieh Lin, Shih-Hang Chang, Shyi-Kaan Wu, Chin Kuo |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Condensed matter physics Mechanical Engineering Alloy 02 engineering and technology Shape-memory alloy engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Internal friction Ferromagnetism Mechanics of Materials Diffusionless transformation Martensite 0103 physical sciences engineering General Materials Science 0210 nano-technology |
| Zdroj: | Journal of Materials Research. 36:1686-1694 |
| ISSN: | 2044-5326 0884-2914 |
| DOI: | 10.1557/s43578-021-00222-5 |
| Popis: | Martensitic transformation and damping capacities of inherent and intrinsic internal frictions (IFPT + IFI) of Ni50Mn40-xSn10+x (x = 0–4 at.%) ferromagnetic shape memory alloys (FSMAs) are investigated. The (IFPT + IFI)L21→14M peak height of Ni50Mn40Sn10 FSMA is higher than the other Ni50Mn40-xSn10+x FSMAs as there are more abundant movable twins dissipating energy during damping in 14M martensite than in 10M or 4O martensite. The Ni50Mn38Sn12 FSMA exhibits a lower (IFPT + IFI)L21→10(majority)+14M(minority) peak than the (IFPT + IFI)L21→4O peak of the Ni50Mn37Sn13 FSMA as there is a smaller number of movable twins in the 10M martensite than in the 4O martensite. Compared with the other SMAs, Ni50Mn40-xSn10+x FSMAs with 14M martensite not only exhibit a high damping at temperatures above 100 °C but also possess the advantage of easily controlling the transformation temperature by adjusting the Sn content of the alloy. |
| Databáze: | OpenAIRE |
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