The successful research into and analysis of the phase changes in NiTi materials with the shape memory effect were conducted by developed and prepared devices for simulating different load and stress states. During the development of the two devices, we tried to achieve more functionality for both devices, because we want to use them for the metallographic analysis on the longitudinal sections and surfaces, as well as for the earlier measurement of the electrical resistance. The presented device will allow us to characterize the microstructure and phases of orthodontic wires at different loads. With these devices we can observe the change in the microstructure transformation zone of the orthodontic wires with optical and electron microscopes. With these analyses we will get the information about changes in the material due to different loads, which will allow us better understanding of the orthodontic treatment with the Ni- Ti shape memory alloy.
F.13 Development of new production methods and tools or processes
COBISS.SI-ID: 17410838The most important socio-economic result of the Project in 2013 was the organisation and the realization of the already traditional eleventh scientific conference entitled “Pomurska akademija Pomurju”, which was attended by 41 Lecturers from different scientific disciplines. At the conference a lecture was presented on the topic of the NiTi alloys prepared by Dr. Rebeka Rudolf (THE THEORETICAL CALCULATION OF THE STRESS IN(BY) TENSILE, COMPRESSIVE AND SHEAR LOAD FOR THE BEGINNING OF THE STRESS MARTENSITIC TRANSFORMATIONS IN THE NiTi SHAPE MEMORY ALLOYS). The Summaries of the lectures have been published in the PAZU publication.
B.01 Organiser of a scientific meeting
COBISS.SI-ID: 76212225Nickel-titanium alloys have become a widely used material in medical applications, especially in orthodontic appliances for treatment of protruding teeth. The reason for this is that this material has specific functional properties and is biocompatible. This paper concentrates on the clarification of the process of manufacture of shape memory alloys and determination of the functional properties and biocompatibility of different orthodontic wires from this alloy. When establishing the functional features, we first determined the temperature of the phase in which the shape memory alloy has completely austenitic microstructure. Then we determined the mechanical properties with a uni-axial tension test. This helps in the understanding of orthodontic treatment using different commercially available orthodontic arch-wires from nickel-titanium alloy. In the section on biocompatibility the process of determining the biocompatibility of orthodontic wires is shown.
B.04 Guest lecture
COBISS.SI-ID: 17144342