Abstract
Two types of endodontic files (ProFile and Mtwo) were studied in order to analyze the effect of geometry on the stress-induced martensitic (SIM) transformation during bending. The use of a fine beam spot of synchrotron radiation allowed a detailed structural characterization with a fine spatial resolution. Experimental evidence of the effect of the cross-section geometry on the stress localization giving rise to different degrees of SIM transformation is presented for the first time in the published literature.
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Acknowledgments
FMBF, JPO and AM acknowledge the funding of CENIMAT by FCT/MCTES through the PEst-C/CTM/LA0025/2013-14 (Strategic Project - LA 25 - 2013-2014) and the Project NiTi-Fail (PTDC/EME-PME/122795/2011). The beam time project I-20120244 EC, at P-07 (PETRA-III, DESY), has been funded by the EC 7th. Framework Programme (FP7/2007-2013) under grant agreement no. 312284.
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The results presented in the manuscript are purely scientific in nature. They do not constitute an endorsement of any commercial product.
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This article is an invited paper selected from presentations at the International Conference on Shape Memory and Superelastic Technologies 2013, held May 20-24, 2013, in Prague, Czech Republic, and has been expanded from the original presentation.
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Braz Fernandes, F.M., Oliveira, J.P., Machado, A. et al. XRD Study of NiTi Endodontic Files Using Synchrotron Radiation. J. of Materi Eng and Perform 23, 2477–2481 (2014). https://doi.org/10.1007/s11665-014-1056-y
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DOI: https://doi.org/10.1007/s11665-014-1056-y