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https://hdl.handle.net/20.500.13087/1160| Title: | The heating-cooling rate effect on thermal properties of high nickel-rich NiTi shape memory alloy | Authors: | Kaya, İrfan Özdemir, Yalçın Kaya, Eren Keskin, Mehmet Emin |
Keywords: | Ni-rich NiTi Shape memory alloy Heating rate effect Activation energy Thermal properties |
Issue Date: | 2020 | Publisher: | Springer | Abstract: | In this study, the effects of heating and cooling rate on the thermal properties of high nickel-rich Ni55Ti45 shape memory alloy were investigated. Transformation temperatures and enthalpies were determined by differential scanning calorimetry. R-phase was observed with two-stage phase transformation during cooling. Transformation finish temperatures were affected, while the transformation start temperatures were not changed by heating-cooling rate. Kissinger, Takhor, and Ozawa methods were applied to find activation energy that is needed for phase transformation. The average activation energy value of 200.5 kJ mol(-1) was calculated for Ni55Ti45 alloy. The calculated activation energy was found lower than the ones reported in the literature. | URI: | https://doi.org/10.1007/s10973-019-08511-2 https://hdl.handle.net/20.500.13087/1160 |
ISSN: | 1388-6150 1588-2926 |
| Appears in Collections: | Matematik Bölümü Koleksiyonu Scopus İndeksli Yayınlar Koleksiyonu WoS İndeksli Yayınlar Koleksiyonu |
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