Development and Characterization of Ni55Ti45 Shape Memory Alloy for Biomedical Applications | [Proceedings of the Pakistan Academy of Sciences: A. Physical and Computational Sciences • 2017]

Author(s):

1. Aqsa Amir: Institute of Advanced Materials, Bahauddin Zakariya University,Multan,Pakistan

2. Shabbar Atiq: Institute of Advanced Materials, Bahauddin Zakariya University,Multan,Pakistan

3. Waheed Ahmad: Institute of Advanced Materials, Bahauddin Zakariya University,Multan,Pakistan

4. Ayisha Saleem: Institute of Advanced Materials, Bahauddin Zakariya University,Multan,Pakistan

5. Hafiza Haseebah: Institute of Advanced Materials, Bahauddin Zakariya University,Multan,Pakistan

Abstract:

In this study, a shape memory alloy of Ni55Ti45 was developed by Vacuum Arc melting technique under a vacuum of 10-5mbar. It was followed by homogenization in Nabertherm Tube furnace at a temperature of 1000°C for 54 hrs and subsequent furnace cooling. A series of tests had been performed in the laboratory in order to characterize the behavior of this alloy. Scanning electron microscopy results confirmed the presence of primary NiTi and secondary Ni3Ti phases respectively. X ray diffraction confirmed the BCC (body centered cubic) and HCP (hexagonal close packed) structures of NiTi and Ni3Ti respectively. In differential scanning calorimetry, no transformation was observed in the temperature range of 0?C-1200?C. This is indicative of the fact that the transformation temperature for shape memory effect lies below this temperature range.

Page(s): 89-93

DOI: DOI not available

Published: Journal: Proceedings of the Pakistan Academy of Sciences: A. Physical and Computational Sciences, Volume: 54, Issue: 1, Year: 2017

Keywords:

biomaterials , Xray Diffraction , nickeltitanium , shape memory , scanning electron Mmicroscope

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