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Nondestructive Magnetic Monitoring of Residual Stresses in a Medical Ti–6Al–4V–ELI Alloy Using a Fluxgate Sensor

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Abstract

Attempts to improve the osteointegration, fixation and stability of Ti-base implants have been focused by producing a significative surface roughness that enhances the surface area available for bone/ implant apposition. In this research study, it shows the experimental data by synchrotron radiation X-ray diffraction (SR-XRD) of the main material surface properties (residual stress and cold work) that changed significantly during the application of different surface treatments such as grit blasting and laser shock peening in a biometallic Ti–6Al–4V alloy. The ratio of residual stress to cold work is primarily determined by the material and the specific surface treatment applied. In order to establish how they alter the recorded magnetic signatures and to validate that the residual stress and cold work effects govern the outcome of the magnetic measurements, we used a nondestructive magnetic method. It was displayed that the magnetic method provides the unique capability of nondestructively sensing the thermomechanical relaxation below the treated surface only calculating the normal and tangential magnetic intensities induced by thermocurrents using a fluxgate magnetometer.

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Funding

This work was performed at UMSNH-MEXICO with partially funding from CONACYT-MEXICO under project CB-2015/256013. The authors are grateful to Jose L. Gonzalez-Carrasco (CENIM) for the experimental support in the surface treatment processes.

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Correspondence to H. Carreón.

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Russian Text © The Author(s), 2019, published in Fizicheskaya Mezomekhanika, 2019, Vol. 22, No. 3, pp. 106–111.

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Carreón, H., Carreon, M.L. & Carreon-Garcidueñas, M. Nondestructive Magnetic Monitoring of Residual Stresses in a Medical Ti–6Al–4V–ELI Alloy Using a Fluxgate Sensor. Phys Mesomech 23, 160–166 (2020). https://doi.org/10.1134/S1029959920020071

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  • DOI: https://doi.org/10.1134/S1029959920020071

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