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Title: X-Ray Diffraction Studies of the Reversible Phase Transformation in NiTi Shape Memory Alloy
Authors: Lekston, Zdzisław
Zubko, Maciej
Keywords: X-ray diffraction; shape memory alloys
Issue Date: 2016
Citation: Acta Physica Polonica. A, Vol. 130, no. 4 (2016), s. 1059-1062
Abstract: In the present paper the phase transformations occurring in hot worked and heat-treated Ni-rich NiTi shape memory alloy were studied using X-ray diffraction, differential scanning calorimetry and bend and free recovery measurements. Based on conducted measurements it can be seen that in the studied alloy two-step B2 $ R $ B190 phase transitions occurred. Due to the fact that during heating the phase transition B2 ! R and R ! B190 occurs in a very narrow temperature range and differential scanning calorimetry peaks overlap additional X-ray diffraction measurements were performed. Obtained characteristic temperatures from applied different experimental methods are in good agreement. The optimum heat-treatment was selected to obtain rods with a shape recovery temperature Af below 37 C to prepare prototypes of medical implants activated by patients body heat.
DOI: 10.12693/APhysPolA.130.1059
ISSN: 0587-4246
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