Elastocaloric Effect in a Rapidly Quenched Ti2NiCu Alloy at a Periodic Action of a Stretching Force at Frequencies to 50 Hz
| Autor: | S. Yu. Fedotov, T. A. Kuli-zade, Vladimir G. Shavrov, V. V. Koledov, I. A. Znamenskaya, Evgeny Morozov, M.S. Bybik, A. V. Petrov |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Phase transition Materials science Solid-state physics business.industry Alloy engineering.material Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Thermoelastic damping Martensite 0103 physical sciences Ribbon engineering Composite material 010306 general physics business Thermal energy Power density |
| Zdroj: | Physics of the Solid State. 62:972-975 |
| ISSN: | 1090-6460 1063-7834 |
| DOI: | 10.1134/s1063783420060189 |
| Popis: | The elastocaloric effect (ECE) is studied in samples of rapidly quenched ribbons of a Ti2NiCu alloy at a periodic action by a mechanical stress to 300 MPa at a frequency to 50 Hz. ECE is maximal near the temperatures of a first-order thermoelastic martensitic phase transition. The ECE maximum is observed in a point corresponding to the completion of the reverse martensitic transition (T = 67.5°C) and is 21 and 6 K at cyclic mechanical loads of 300 and 100 MPa, respectively. The ECE value is shown to be independent of the frequency of the external loads in the range from 0 to 50 Hz. The specific power of a rapidly quenched ribbon as a thermal energy transformer is estimated at the external mechanical stress of 100 MPa; its value is 150 W/g at a frequency of 50 Hz and ECE is 6 K. |
| Databáze: | OpenAIRE |
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