Thermodynamic Characterization of Time Depending Aging Effects at 300°C for NiTi Alloy

DERE, Ayşegül and ÖZKUL, İskender and AKSU CANBAY, Canan (2019) Thermodynamic Characterization of Time Depending Aging Effects at 300°C for NiTi Alloy. In: 1st International Conference on Optoelectronics, Applied Optics and Microelectronics - 2019.

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Abstract

The shape memory alloys are the most commonly used part of the smart material group. Effective use of these materials is increasing in industrial area. In SMA class, mostly NiTi and Cu-based memory alloys are preferred and in many kinds of applications, when compared with NiTi ones, Cu-based SMAs are opted for their easier production process, lower costs or higher transformation temperatures. These smart alloys can remember their original predeformed shapes when they heated up to high temperatures after they were deformed plastically at low temperatures. This shape regaining mechanism of them stems from the thermoelastic phase transformations between their main and product phases. The temperature factor, which is effective in phase change, has an aging effect on the material in used applications. That effect changes the character of the material depending on the usage conditions over the working temperatures. In this study, the transformation temperature, enthalpy and entropy changes on the material were investigated by aging the TiNi shape memory alloy at 300° C for different waiting periods.

Item Type: Conference or Workshop Item (Paper)
Persian Title: Thermodynamic Characterization of Time Depending Aging Effects at 300°C for NiTi Alloy
Persian Abstract: -
Subjects: Divisions > Conferences > 1st International Conference on Optoelectronics, Applied Optics and Microelectronics - 2019
Conferences > 1st International Conference on Optoelectronics, Applied Optics and Microelectronics - 2019
Divisions: Conferences > 1st International Conference on Optoelectronics, Applied Optics and Microelectronics - 2019
Subjects > Conferences > 1st International Conference on Optoelectronics, Applied Optics and Microelectronics - 2019
Date Deposited: 08 Dec 2019 06:13
Last Modified: 08 Dec 2019 06:13
URI: http://repository.uma.ac.ir/id/eprint/10439

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