Observation of Phase Transformation in Shape Memory Alloy NiTi Wire during In Vitro Simulation of Orthodontic Treatment

Rebeka Rudolf; Janko Ferčec

doi:10.4028/www.scientific.net/DDF.364.61

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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vol. 364Observation of Phase Transformation in Shape...

Observation of Phase Transformation in Shape Memory Alloy NiTi Wire during In Vitro Simulation of Orthodontic Treatment

Abstract:

The aim of this study was to simulate the different loadings on NiTi Shape Memory Alloy in the form of wire that occurs in orthodontic praxis. Our main goals were to detect and determine the beginning of the stress-induced transformation from the austenite to martensite phases and to indicate the transformation plateau at different deformations during orthodontic treatment using in-vitro simulation. For this reason, we developed two prototype devices for in-situ simulation of orthodontic treatment by which we measured the electrical resistance and hardness. Accompanying these two properties and the microstructure observations of loaded wires by Transmission Electron Microscopy enabled us to detect successfully the stabilized stress-induced martensite due phase transformation. We found out that transformation depends strongly on the type of loading.

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Periodical:

Defect and Diffusion Forum (Volume 364)

Pages:

61-70

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.364.61

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Online since:

June 2015

Authors:

Rebeka Rudolf*, Janko Ferčec

Keywords:

In-Vitro Simulation, Nickel-Titanium, Phase Transformation, Shape Memory Alloys, Superelasticity

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* - Corresponding Author

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